EP0245805A2 - Coin checking apparatus - Google Patents

Coin checking apparatus Download PDF

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Publication number
EP0245805A2
EP0245805A2 EP87106761A EP87106761A EP0245805A2 EP 0245805 A2 EP0245805 A2 EP 0245805A2 EP 87106761 A EP87106761 A EP 87106761A EP 87106761 A EP87106761 A EP 87106761A EP 0245805 A2 EP0245805 A2 EP 0245805A2
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EP
European Patent Office
Prior art keywords
coin
sensors
test station
test
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87106761A
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German (de)
French (fr)
Other versions
EP0245805B1 (en
EP0245805A3 (en
Inventor
Fritz Siegenthaler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ascom Autelca AG
Original Assignee
Ascom Autelca AG
Autelca AG
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Publication date
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Priority to AT87106761T priority Critical patent/ATE79190T1/en
Publication of EP0245805A2 publication Critical patent/EP0245805A2/en
Publication of EP0245805A3 publication Critical patent/EP0245805A3/en
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Publication of EP0245805B1 publication Critical patent/EP0245805B1/en
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/08—Testing the magnetic or electric properties
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/02—Testing the dimensions, e.g. thickness, diameter; Testing the deformation

Definitions

  • the invention relates to a coin checking device.
  • the diameter of the coin is checked either mechanically or inductively.
  • the mechanical check is carried out according to the principle used in conventional limit gauges, for example by dimensioning the coin slot so that coins whose diameter exceeds an upper limit cannot pass and the inclined coin channel has a side window through the coins whose diameter falls below a lower limit value (EP -A2-0 122 732).
  • a lower limit value EP -A2-0 122 732
  • Converting the slot and the channel with the window of one Diameter range to another is complex, and an actual diameter measurement is not possible in this way.
  • the coin influences the field of a coil excited with high frequency in a mass dependent on the coin diameter, from which an analog signal is obtained which can be used to recognize whether the coin has the diameter of the coin to be accepted (US Pat. No. 4,108 296).
  • the conversion from one diameter range to another is also complex, even if the signal is converted from analog to digital and evaluated in a microprocessor; because there is no linear relationship between the coin diameter and the signal size because of the stray field of the coil, so that the coin validator cannot simply be programmed for another coin diameter. Rather, the signal size assigned to the other coin diameter must first be determined empirically and reprogrammed according to this size.
  • the invention seeks to remedy this.
  • the invention as characterized in claim 1, solves the problem of creating a coin checking device which provides a control variable which is mathematically defined as a function of the distance between the sensors when they strike the edge of the coin.
  • the thrust drive is preferably a linear gear driven by a stepper motor (linear relationship between drive rotation and output thrust), a counter counts the impulses driving the stepper motor starting from a predetermined distance of the sensors up to their abutment on the edge of the coin, and in a microprocessor Subtraction of the pulse number from a constant formed a signal proportional to the coin diameter.
  • the size depending on the distance of the sensors can in particular also the position of one or two support members be, which are moved by means of a gear driven together with the thrust drive, expediently cam gear, so that at the respective distance of the sensors a coin, the diameter of which corresponds to this distance, in a position for supporting this coin in a coaxial to the coil field of an inductive testing device Hold position.
  • the sensors and the thrust drive can be arranged in a test station, the test coil or two coaxial test coils for inductive coin testing can be arranged together with one or two support members in the same or a second test station arranged below this.
  • the common or only the second test station can be displaceable in order to distribute the tested coins into different memories or channels leading to them, the displacement of the second test station, if designed accordingly, enables the diameter of the next coin to be measured while the second test station is still on the move.
  • the advantages achieved by the invention are essentially to be seen in the fact that a signal which corresponds exactly to the coin diameter, in particular proportional, can be obtained, so that if the device is equipped with a microprocessor, it is programmed directly for the coin diameter (s) and therefore simple and can be quickly converted for other coins, and that the coins in inductive testing are independent of the coin diameter in a position that is concentric to the coil field, in which the test is much more precise and reliable is more casual. Since each coin is supported during inductive testing, a test coil can be pressed on one side or two coaxial test coils opposite each other on both sides of the coin to further improve the accuracy and reliability of this test.
  • a measurement value for the exact determination of the coin thickness can be derived from the position of the organ exerting the pressure.
  • acceptable coins can be distinguished much more critically from unacceptable ones.
  • the combination of all tests in one or all tests with the exception of the diameter test in the second test station is space-saving, especially if the second test station is located directly below the first. This, as well as the type of distribution of the tested coins, avoids coin channels and coin spools prone to failure. Further details and advantages will appear from the following description.
  • a thrust cam gear (FIGS. 2 and 3) with a first gear stage 18, 19 which is driven together with the displaceable sensor 3 and which moves the support members 11 and 12 in such a way that, at the respective distance between the sensors 2 and 3, a coin 13 whose diameter corresponds to this distance corresponds to support in a coaxial position to the test coils 9 and 10 when the second test station 8 is in its (shown) rest position under the first test station 1 is; and with a second gear stage 23, 24, which moves the support members 11 and 12 into a position which is not suitable for supporting a coin, regardless of the state of the first gear stage 18, 19, when the second test station 8 leaves its rest position in the direction of arrow 25, and the support members 11 and 12 return to the position dependent on the distance between the sensors 2 and 3 when the second test station 8 approaches its rest position again.
  • a displacement drive 27-30 (FIG. 1) through which the second test station 8 can be displaced on a displacement path 32, 33 to one of a plurality of coin outlets 35, 36 of the coin inspection device.
  • the output 35 leads into a return channel (not shown) for coins not accepted.
  • Each of the outputs 36 leads to a memory (not shown) for one of the coin types to be accepted.
  • the first coin checking station 1 (FIGS. 2 and 4) includes a thrust drive with a reversible stepper motor 39, which drives a pinion 40 of a rack and pinion gear 40, 41. At one end of the rack 41, the displaceable sensor 3 is formed.
  • the sensors 2 and 3 have parallel touch surfaces 43, 44 and are arranged on one side of a plate 46 which forms a guide surface for one side of the coin 5. A guide surface for the other side of the coin is not shown. The distance between these guide surfaces is slightly larger than the thickness of the thickest coin. The play of the coin between these guide surfaces has no influence on the measurement of the coin diameter.
  • the support 5 can be moved laterally in the direction of the arrow 15 by means of a swivel mechanism, of which only the swivel arm 48 is shown.
  • a sensor coil 50 for controlling the coin checking device is inserted into the plate 46. If a coin falls into the first test station 1 in the direction of arrow 52 from a coin feed device (not shown), a signal is triggered by the sensor coil 50, which causes and maintains the locked state of a lock provided in the coin feed device until this coin 5 the first test station 1 has left by moving the support 4 from its illustrated position supporting the coin 5 in the direction of arrow 15 to release the coin 5 into the second test station 8.
  • the stepper motor 39 is started in the feed direction of the sensor 3 by the signal from the sensor coil 50 triggered when the coin 5 arrives.
  • a counter 54 counts the pulses which drive the stepper motor 39, starting from a predetermined initial distance between the sensors 2 and 3, until both sensors 2 and 3 are pressed against the edge of the coin 5. The counted number of pulses corresponds to the sensor feed distance.
  • the microprocessor of the device determines the diameter of the coin 5 by subtracting the feed distance (or the corresponding number of pulses) from a constant given by the initial spacing of the sensors 2 and 3, and checks in the usual way whether the coin 5 has one due to its diameter acceptable coin.
  • the second test station 8 (FIGS. 2 and 3) includes a gear transmission 57, 58 for symmetrically pivoting the support members 11 and 12, a magnetic coil 60 with plunger armature 61 Move the coil 9 and an inductive transmitter 63, 64, which provides a signal dependent on the position of the coil 9 for measuring the thickness of the coin 13.
  • the second test station 8 is designed as a slide which is guided by means of rollers 66, 67 to the rails 32 and 33 forming the sliding track and is displaceable by means of the sliding drive 27-30 described in more detail below. In its illustrated rest position, which serves for inductive coin checking, the second checking station 8 is below the first checking station 1 such that a coin dropped by actuation of the support 4 falls directly between the coils 9 and 10 and supporting members 11 and 12.
  • the parts of the second test station 8 are arranged on a support plate 69 on which the rollers 66 and 67 are mounted.
  • a support plate 69 On the support plate 69, two bodies 71 and 72 made of insulating material are held at a distance from one another by bolts 74.
  • the test coil 9 is axially displaceably mounted in the body 71, the other test coil 10 is permanently installed in the body 72.
  • the pivotable support members 11 and 12 are arranged between the bodies 71 and 72, and they each sit on a shaft 76 and 77, respectively, which are mounted in bores in the bodies 71 and 72. On each shaft 76 and 77 there is one of two intermeshing gear segments 57 and 58 which form the gear transmission.
  • the test coil 9 is loaded by a compression spring 79 (only partially shown) in the direction of the test coil 10 and is firmly connected to the plunger armature 61, to which the magnet coil 60 is assigned, and a plate 64 made of magnetically conductive material, which together with an induction coil 63 forms the inductive transmitter with which a signal proportional to the thickness of the coin 13 is generated when the coil 60 is not energized, so that the spring 79 connects the test coil 9 to the coin 11 and thereby presses the coin 11 onto the test coil 10.
  • the mutually facing end faces of the test coils 9 and 10 have thin supports with slightly spherically curved outer surfaces. This ensures that any curvature of the coin does not influence the inductive test or the test of the coin thickness.
  • the transmitter is designed so that its measured value is a linear function of the coin thickness, so that it can be obtained simply by subtracting the measured value from a constant.
  • the thrust cam gear (FIGS. 2 and 3) has in its first gear stage a cam carrier 18 (see also FIG. 4) which is fixedly connected to the sensor 3 and on the curve 81 of which a pin 19 is guided.
  • the pin 19 is fixedly connected to the cam carrier 23 of the second gear stage, which is vertically displaceable by means of bolts 84, 85 fastened to the rear wall 83 of the housing, which are guided in elongated holes .87, 88 (FIG. 3) of the cam carrier 23.
  • a pin 24 is guided, which is attached to the gear segment 57 eccentrically, so that it forms a crank pin for pivoting the support members 11 and 12.
  • Stops not shown, limit the rotatability of the gear segments 57 and 58, and a return spring, not shown, strives to keep the support members 11 and 12 at a distance from each other at which they no longer support the coin 13.
  • This return spring also ensures a frictional connection of the second gear stage 23, 24.
  • the pin 24 In the shown rest position of the second test station 8, the pin 24 lies on a slope-free part 91 of the curve 90 of the cam carrier 23. The pin 24 follows the vertical output movement of the first gear stage 18, 19.
  • its curve 81 is straight and the other facing support surfaces 93 and 94 of the support members 11 and 12 are curved so that they concave keep a coin 13, the diameter of which corresponds to this distance, centered with respect to the test coils 9 and 10 at the respective distance between the sensors 2 and 3.
  • this can also be achieved with straight support members and a curved curve 81, or in that both the curve 81 and the support surfaces 93, 94 are curved.
  • the relationship between the vertical movement of the crank pin 24 and the rotation of the gear segments 57 and 58 is not linear.
  • the displacement drive (FIG. 1) for displacing the second test station 8 on the displacement path formed by the rails 32 and 33 is a cable drive with a practically inextensible cable 27, a deflection roller 28 and a cable drum 30 driven by a stepping motor 29.
  • the second test station 8 is connected to a point of one of the dreams of the rope 27.
  • the ends of the rope 27 are fastened to the rope drum 30, and end pieces of the rope 27 adjoining these ends are wound onto the rope drum 30 in opposite directions, so that when the rope drum 30 rotates, the rope 27 is wound at one end and at the other end is handled. In this way, slippage of the rope 27 is prevented and the second test station 8 is reached. is each shifted by a distance that exactly Number of impulses corresponding to the stepping motor 29 and thereby the cable drum 30.
  • sensors 2 and 3 have the predetermined initial distance, which is larger than the diameter of the largest of the coins to be accepted.
  • the support 4 and the second test station 8 are in their position shown in the drawings.
  • a coin arriving from the coin feed device in the direction of arrow 52 falls between the sensors 2 and 3 on the support 4 (coin 5 in FIGS. 2 and 4).
  • the signal triggered by the sensor coil 50 (FIG. 2) starts the stepping motor 39 (FIG. 4), which feeds the sensor 3 until it hits the coin 5 and the coin 5 on the sensor 2.
  • the pin 19 runs on the curve 81 of the first cam carrier 18 (FIG.
  • the counter 54 counts the pulses driving the stepping motor 39.
  • the microprocessor determines the coin diameter from the counted number of pulses. After the sensor has advanced, the support 4 is temporarily pivoted to the side (arrow 15, FIG. 2) in order to release the coin 5 into the second test station 8.
  • the sensors 2 and 3 are also detached from the coin 5 by the motor 39 being driven in the retracting direction of the sensor 3 by a certain small number of pulses.
  • This small retreat distance is the shape of the Support surfaces of the support members 11 and 12 (or in the course of curve 81) are taken into account.
  • the coin falls between the blocks 71 and 72 or test coils 9 and 10 and the support members 11 and 12 which support the coin in the bearing, which is centered with respect to the coils 9 and 10 and is designated by 13.
  • the magnetic coil 60 is energized to pull the coil 9 against the force of the compression spring 79 so far that it does not protrude into the space between the blocks 71 and 72.
  • the excitation of the magnetic coil 60 is switched off, whereupon the coil 9 contacts the coin 13 and this coin under the action of the spring 79 the P rüfspule is pressed 10th While the test coils 9 and 10 lie opposite one another on the coin 7, this is tested inductively in a manner known per se.
  • a signal for measuring the thickness of the coin 7 is generated by means of the transmitter 63, 64.
  • the stepping motor 39 is driven to retract the sensor 3 in its initial position.
  • the pin 19 runs downward on the curve 81 (FIGS. 3 and 4) and moves the cam carrier 23 and thus the crank pin 24 downward, so that the support members 11 and 12 diverge and no longer support the coin 13.
  • the coin 13 is still held in the second test station 8 because it is held between the test coils 9 and 10 under the action of the compression spring 79.
  • the microprocessor uses the measured diameter and the measured thickness and the result of the inductive test to determine whether the coin 13 is acceptable. Is if it is not acceptable, the magnetic coil 60 is briefly energized, the coil 9 being withdrawn and the coin 13 no longer supported by the support members 11 and 12 falling through the outlet 35 (FIGS. 1 and 2) into the coin return channel (not shown).
  • the second test station 8 is pushed by means of the shift drive 27 to 30 (FIG. 1) to that of the outputs 36, which leads into the coin store (not shown) provided for the coin type in question, and that Coin 13 is released into this coin store by briefly exciting magnetic coil 60.
  • the second test station 8 is then pushed back into its rest position. If a further coin has meanwhile reached the first test station 1, its sensors 2 and 3 have already the distance corresponding to the diameter of this coin.
  • crank pin 24 runs on the curve 90 on the curve part 91 thereof in the position in which the support members 11 and 12 receive this coin in the position centered with respect to the test coils 9 and 10, when it falls into the second test station 8, where it is tested and from which it is released through one of the exits 35 and 36, as previously described.
  • the coin checking device for example, another linear gear or a gear whose output thrust is not a linear function of the drive rotation can be used instead of the rack and pinion gear 40, 41.
  • the diameter of the coin can be determined precisely because the function is mathematically defined by the geometry of the gear so that it can be taken into account in the microprocessor.
  • the sensors 2, 3 could, for example, also be displaceable in opposite directions by means of two toothed racks meshing with opposite sides of the pinion 40 or by means of a spindle having a left-hand and a right-hand thread, with a single support member which can be displaced perpendicularly to the sensors in relation to the coin supported laterally on the sensors supported on one or two coaxial test coils.
  • the required displacement of the support member is proportional to the displacement of each of the sensors.
  • the two gear segments 57 and 58 can be replaced by means having the same effect, for example two cranks which are connected to one another by a push rod, and instead of being pivotable in opposite directions, they can also be displaced in opposite directions.
  • a support member which can be displaced perpendicularly to the sensors and has two support surfaces converging downwards to support the coin at two mutually opposite edge locations could be provided, which, like the aforementioned support member, can be displaced, for example, parallel to the test coil axis by to drop the coin.

Abstract

Two sensors (2, 3) are placed opposite each other against the rim of the coin (5). By this, a signal, corresponding to the diameter of the coin (5) is produced and a drive (18/19, 23/24) is driven which moves two support members in order to support a coin between them (13), the diameter of which corresponds to the distance between the sensors (2, 3) in a position that is centered to a test coil (10) of an inductive coin testing device.

Description

Die Erfindung bezieht sich auf eine Münzenprüfeinrichtung.The invention relates to a coin checking device.

Bei bekannten Münzenprüfeinrichtungen wird der Durchmesser der Münze entweder mechanisch oder induktiv geprüft. Die mechanische Prüfung erfolgt nach dem bei üblichen Grenzlehren angewandten Prinzip, zum Beispiel indem der Münzeinwurfschlitz so bemessen ist, dass Münzen, deren Durchmesser einen oberen Grenzwert überschreitet, nicht passieren können, und der geneigte Münzkanal ein seitliches Fenster hat, durch das Münzen, deren Durchmesser einen unteren Grenzwert unterschreitet, herausfallen.(EP -A2-0 122 732). Dies erfordert für jede anzunehmende Münzart einen separaten, ihr individuell angepassten Münzeinwurfschlitz und einen separaten Münzkanal mit einem ihr individuell angepassten Fenster. Das Umrüsten des Einwurfschlitzes und des Kanals mit dem Fenster von einem Durchmesserbereich zu einem anderen ist aufwendig, und eine eigentliche Durchmessermessung ist auf diese Weise nicht möglich. Bei der induktiven Prüfung beeinflusst die Münze das Feld einer mit Hochfrequenz erregten Spule in einem vom Münzdurchmesser abhängigen Masse, woraus ein analoges Signal gewonnen wird, an dem erkannt werden kann, ob die Münze den Durchmesser der anzunehmenden Münze hat (US-A-4 108 296). Die Umrüstung von einem Durchmesserbereich zu einem anderen ist ebenfalls aufwendig, auch wenn das Signal analog-digital gewandelt und in einem Mikroprozessor ausgewertet wird; denn es besteht wegen des Streufeldes der Spule kein linearer Zusammenhang zwischen dem Münzdurchmesser und der Signalgrösse, so dass der Münzprüfer nicht einfach für einen anderen Münzdurchmesser programmiert werden kann. Vielmehr muss zuerst die dem anderen Münzdurchmesser zugeordnete Signalgrösse empirisch bestimmt und nach dieser Grösse neu programmiert werden.In known coin checking devices, the diameter of the coin is checked either mechanically or inductively. The mechanical check is carried out according to the principle used in conventional limit gauges, for example by dimensioning the coin slot so that coins whose diameter exceeds an upper limit cannot pass and the inclined coin channel has a side window through the coins whose diameter falls below a lower limit value (EP -A2-0 122 732). For each type of coin to be accepted, this requires a separate, individually adapted coin insertion slot and a separate coin channel with an individually adapted window. Converting the slot and the channel with the window of one Diameter range to another is complex, and an actual diameter measurement is not possible in this way. In the case of inductive testing, the coin influences the field of a coil excited with high frequency in a mass dependent on the coin diameter, from which an analog signal is obtained which can be used to recognize whether the coin has the diameter of the coin to be accepted (US Pat. No. 4,108 296). The conversion from one diameter range to another is also complex, even if the signal is converted from analog to digital and evaluated in a microprocessor; because there is no linear relationship between the coin diameter and the signal size because of the stray field of the coil, so that the coin validator cannot simply be programmed for another coin diameter. Rather, the signal size assigned to the other coin diameter must first be determined empirically and reprogrammed according to this size.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung wie sie im Patentanspruch 1 gekennzeichnet ist, löst die Aufgabe, eine Münzenprüfeinrichtung zu schaffen, die eine vom Abstand der Fühler beim Anstossen an den Münzrand rechnerisch definiert abhängige Steuergrösse liefert.The invention seeks to remedy this. The invention, as characterized in claim 1, solves the problem of creating a coin checking device which provides a control variable which is mathematically defined as a function of the distance between the sensors when they strike the edge of the coin.

Vorzugsweise ist der Schubantrieb ein von einem Schrittmotor angetriebenes, lineares Getriebe (linearer Zusammenhang zwischen Antriebsdrehung und Abtriebsschub), ein Zähler zählt die den Schrittmotor antreibenden Impulse ausgehend von einem vorbestimmten Abstand der Fühler bis zu deren Anstossen an den Münzrand, und in einem Mikroprozessor wird durch Subtraktion der Impulszahl von einer Konstanten ein dem Münzdurchmesser proportionales Signal gebildet.The thrust drive is preferably a linear gear driven by a stepper motor (linear relationship between drive rotation and output thrust), a counter counts the impulses driving the stepper motor starting from a predetermined distance of the sensors up to their abutment on the edge of the coin, and in a microprocessor Subtraction of the pulse number from a constant formed a signal proportional to the coin diameter.

Die vom Abstand der Fühler abhängige Grösse kann insbesondere auch die Stellung eines oder zweier Stützglieder sein, die mittels eines zusammen mit dem Schubantrieb angetriebenen Getriebes, zweckmässig Kurvengetriebes, so bewegt werden, dass sie beim jeweiligen Abstand der Fühler eine Münze, deren Durchmesser diesem Abstand entspricht, in einer Stellung zum Unterstützen dieser Münze in einer zum Spulenfeld einer induktiven Prüfvorrichtung koaxialen Lage halten.The size depending on the distance of the sensors can in particular also the position of one or two support members be, which are moved by means of a gear driven together with the thrust drive, expediently cam gear, so that at the respective distance of the sensors a coin, the diameter of which corresponds to this distance, in a position for supporting this coin in a coaxial to the coil field of an inductive testing device Hold position.

Die Fühler und der Schubantrieb können in einer Prüfstation, die Prüfspule oder zwei koaxiale Prüfspulen zur induktiven Münzprüfung können zusammen mit einem oder zwei Stützgliedern in derselben oder einer unter dieser angeordneten zweiten Prüfstation angeordnet sein. Die gemeinsame oder nur die zweite Prüfstation kann verschiebbar sein, um die geprüften Münzen in verschiedene Speicher oder zu diesen führende Kanäle zu verteilen, wobei die Verschiebung der zweiten Prüfstation es bei entsprechender Ausführung ermöglicht, den Durchmesser der nächsten Münze zu messen, während die zweite Prüfstation noch auf ihrem Verschiebewege ist.The sensors and the thrust drive can be arranged in a test station, the test coil or two coaxial test coils for inductive coin testing can be arranged together with one or two support members in the same or a second test station arranged below this. The common or only the second test station can be displaceable in order to distribute the tested coins into different memories or channels leading to them, the displacement of the second test station, if designed accordingly, enables the diameter of the next coin to be measured while the second test station is still on the move.

Diese und weitere Ausführungsformen und Weiterbildungen der Erfindung gehen aus den abhängigen Patentansprüchen hervor.These and other embodiments and developments of the invention are evident from the dependent claims.

Die durch die Erfindung erzielten Vorteile sind im wesentlichen darin zu sehen, dass ein genau dem Münzdurchmesser entsprechendes, insbesondere proportionales Signal erhalten werden kann, so dass, wenn die Einrichtung mit einem Mikroprozessor ausgerüstet ist, unmittelbar für den oder die Münzdurchmesser programmiert und deshalb einfach und schnell für andere Münzen umgerüstet werden kann, und dass die Münzen bei der induktiven Prüfung unabhängig vom Münzdurchmesser in einer zum Spulenfeld konzentrischen Laqe sind, bei der die Prüfunq wesentlich qenauer und zuverlässiger ist. Da jede Münze während der induktiven Prüfung unterstützt ist, können zur weiteren Verbesserung der Genauigkeit und Zuverlässigkeit dieser Prüfung eine Prüfspule an eine Seite oder zwei koaxiale Prüfspulen einander gegenüber an die beiden Seiten der Münze gedrückt werden. Dabei kann aus der Stellung des den Druck ausübenden Organs gleichzeitig ein Messwert zur genauen Bestimmung der Münzdicke abgeleitet werden. Dadurch können annehmbare Münzen wesentlich kritischer von nicht annehmbaren unterschieden werden. Die Vereinigung aller Prüfungen in einer einzigen oder aller Prüfungen mit Ausnahme der Durchmesserprüfung in der zweiten Prüfstation ist raumsparend, besonders wenn die zweite Prüfstation unmittelbar unter der ersten angeordnet ist. Sowohl dies als auch die Art der Verteilung der geprüften Münzen vermeidet störanfällige Münzkanäle und Münzweichen. Weitere Einzelheiten und Vorteile gehen aus der folgenden Beschreibung hervor.The advantages achieved by the invention are essentially to be seen in the fact that a signal which corresponds exactly to the coin diameter, in particular proportional, can be obtained, so that if the device is equipped with a microprocessor, it is programmed directly for the coin diameter (s) and therefore simple and can be quickly converted for other coins, and that the coins in inductive testing are independent of the coin diameter in a position that is concentric to the coil field, in which the test is much more precise and reliable is more casual. Since each coin is supported during inductive testing, a test coil can be pressed on one side or two coaxial test coils opposite each other on both sides of the coin to further improve the accuracy and reliability of this test. At the same time, a measurement value for the exact determination of the coin thickness can be derived from the position of the organ exerting the pressure. As a result, acceptable coins can be distinguished much more critically from unacceptable ones. The combination of all tests in one or all tests with the exception of the diameter test in the second test station is space-saving, especially if the second test station is located directly below the first. This, as well as the type of distribution of the tested coins, avoids coin channels and coin spools prone to failure. Further details and advantages will appear from the following description.

Im folgenden wird die Erfindung anhand lediglich einen Ausführungsweg darstellender, vereinfachter Zeichnungen näher erläutert. Es zeigen

  • Fig. 1 eine vereinfachte Seitenansicht einer Münzenprüfeinrichtung,
  • Fig. 2 einen Querschnitt nach der Linie II-II in Fig. 1 und 3,
  • Fig. 3 einen Längsschnitt nach der Linie III-III in Fig. 2 und
  • Fig.4 eine Teilansicht in Blickrichtung IV in Fig. 2.
In the following, the invention will be explained in more detail with the aid of simplified drawings representing only one embodiment. Show it
  • 1 is a simplified side view of a coin checking device,
  • 2 shows a cross section along the line II-II in FIGS. 1 and 3,
  • Fig. 3 shows a longitudinal section along the line III-III in Fig. 2 and
  • 4 shows a partial view in viewing direction IV in FIG. 2.

Die Zeichnungen zeigen die Münzenprüfeinrichtung nur in ihren, im vorliegenden Zusammenhang wesentlichen Teilen. Diese Einrichtung besteht in ihrem grundsätzlichen Aufbau aus folgenden, weiter unten ausführlicher beschriebenen Baugruppen: .

  • Eine erste Prüfstation 1 (Fig. 2 und 4) mit einem festen und einem verschiebbaren Fühler 2 und 3 zur Messung des Durchmessers der von einer Stütze 4 unterstützten Münze 5:
  • Eine zweite Prüfstation 8 (Fig. 2 und 3) mit zwei koaxialen Prüfspulen 9 und 10 zur induktiven Prüfung der Münzlegierung und zwei Stützgliedern 11 und 12 zum Unterstützen der Münze 13 in einer in bezug auf die Spulen 9 und 10 zentrierten Lage. Die Prüfspule 10 ist fest und die Prüfspule 9 ist verschiebbar angeordnet, um die Münze 13 an beiden Prüfspulen 9 und 10 anliegend induktiv zu prüfen, wobei sich gleichzeitig die Dicke der Münze 13 als Abstand der Prüfspulen 9 und 10 ergibt, und die Münze zwischen diesen Spulen gehalten werden kann, wenn die Stützglieder 11 und 12 ihre die Münze 13 unterstützende Lage verlassen. Die zweite Prüfstation 8 ist in ihrer dargestellten Ruhelage unter der ersten Prüfstation 1, so dass die Münze 5 unmittelbar zwischen die Prüfspulen 9 und 10 und Stützglieder 11 und 12 in die mit 13 bezeichnete Lage fällt, wenn die Stütze 4 zur Seite geschwenkt wird (Pfeil 15, Fig. 1).
The drawings only show the coin checking device in its essential parts in the present context. The basic structure of this device consists of the following modules, which are described in more detail below:.
  • A first test station 1 (FIGS. 2 and 4) with a fixed and a displaceable sensor 2 and 3 for measuring the diameter of the coin 5 supported by a support 4:
  • A second test station 8 (FIGS. 2 and 3) with two coaxial test coils 9 and 10 for inductive testing of the coin alloy and two support members 11 and 12 for supporting the coin 13 in a position centered with respect to the coils 9 and 10. The test coil 10 is fixed and the test coil 9 is slidably arranged to inductively test the coin 13 on both test coils 9 and 10, the thickness of the coin 13 being the distance between the test coils 9 and 10 and the coin between them Coils can be held when the support members 11 and 12 leave their position supporting the coin 13. The second test station 8 is in its rest position shown below the first test station 1, so that the coin 5 falls directly between the test coils 9 and 10 and support members 11 and 12 into the position designated 13 when the support 4 is pivoted to the side (arrow 15, Fig. 1).

Ein Schubkurvengetriebe (Fig. 2 und 3) mit einer zusammen mit dem verschiebbaren Fühler 3 angetriebenen ersten Getriebestufe 18, 19 welche die Stützglieder 11 und 12 so bewegt, dass sie beim jeweiligen Abstand der Fühler 2 und 3 eine Münze 13, deren Durchmesser diesem Abstand entspricht, in einer zu den Prüfspulen 9 und 10 koaxialen Lage unterstützen, wenn die zweite Prüfstation 8 in ihrer (dargestellten) Ruhelage unter der ersten Prüfstation 1 ist; und mit einer zweiten Getriebestufe 23, 24, welche die Stützglieder 11 und 12 in eine vom Zustand der ersten Getriebestufe 18, 19 unabhängige zum Unterstützen einer Münze nicht geeignete Lage bewegt, wenn die zweite Prüfstation 8 ihre Ruhelage in Pfeilrichtung 25 verlässt, und die Stütztglieder 11 und 12 wieder in die vom Abstand der Fühler 2 und 3 abhängige Lage zurückführt, wenn die zweite Prüfstation 8 sich ihrer Ruhelage wieder nähert.A thrust cam gear (FIGS. 2 and 3) with a first gear stage 18, 19 which is driven together with the displaceable sensor 3 and which moves the support members 11 and 12 in such a way that, at the respective distance between the sensors 2 and 3, a coin 13 whose diameter corresponds to this distance corresponds to support in a coaxial position to the test coils 9 and 10 when the second test station 8 is in its (shown) rest position under the first test station 1 is; and with a second gear stage 23, 24, which moves the support members 11 and 12 into a position which is not suitable for supporting a coin, regardless of the state of the first gear stage 18, 19, when the second test station 8 leaves its rest position in the direction of arrow 25, and the support members 11 and 12 return to the position dependent on the distance between the sensors 2 and 3 when the second test station 8 approaches its rest position again.

Einen Verschiebeantrieb 27-30 (Fig. 1) durch den die zweite Prüfstation 8 an einer Verschiebebahn 32, 33 an jeweils einen von mehreren Münzausgängen 35, 36 der Münzenprüfeinrichtung verschiebbar ist. Der Ausgang 35 führt in einen nicht dargestellten Rückgabekanal für nicht angenommene Münzen. Jeder der Ausgänge 36 führt in einen nicht dargestellten Speicher für eine der anzunehmenden Münzsorten.A displacement drive 27-30 (FIG. 1) through which the second test station 8 can be displaced on a displacement path 32, 33 to one of a plurality of coin outlets 35, 36 of the coin inspection device. The output 35 leads into a return channel (not shown) for coins not accepted. Each of the outputs 36 leads to a memory (not shown) for one of the coin types to be accepted.

Zur ersten Münzprüfstation 1 (Fig. 2 und 4) gehören ausser den beiden Fühlern 2 und 3 und der Stütze 4 ein Schubantrieb mit einem reversierbaren Schrittmotor 39, der ein Ritzel 40 eines Zahnstangengetriebes 40, 41 antreibt. An einem Ende dessen Zahnstange 41 ist der verschiebbare Fühler 3 gebildet. Die Fühler 2 und 3 haben parallele Tastflächen 43, 44 und sind an einer Seite einer Platte 46 angeordnet, die eine Führungsfläche für eine Seite der Münze 5 bildet. Eine Führungsfläche für die andere Seite der Münze ist nicht dargestellt. Der Abstand dieser Führungsflächen ist etwas grösser als die Dicke der dicksten Münze. Das Spiel der Münze zwischen diesen Führungsflächen hat keinen Einfluss auf die Messung des Münzdurchmessers. Die Stütze 5 ist mittels eines Schwenkmechanismus, von dem nur der Schwenkarm 48 dargestellt ist, seitlich in Pfeilrichtung 15 bewegbar.In addition to the two sensors 2 and 3 and the support 4, the first coin checking station 1 (FIGS. 2 and 4) includes a thrust drive with a reversible stepper motor 39, which drives a pinion 40 of a rack and pinion gear 40, 41. At one end of the rack 41, the displaceable sensor 3 is formed. The sensors 2 and 3 have parallel touch surfaces 43, 44 and are arranged on one side of a plate 46 which forms a guide surface for one side of the coin 5. A guide surface for the other side of the coin is not shown. The distance between these guide surfaces is slightly larger than the thickness of the thickest coin. The play of the coin between these guide surfaces has no influence on the measurement of the coin diameter. The support 5 can be moved laterally in the direction of the arrow 15 by means of a swivel mechanism, of which only the swivel arm 48 is shown.

In die Platte 46 ist eine Sensorspule 50 für die Steuerung der Münzenprüfeinrichtung eingesetzt. Wenn eine Münze von einer nicht dargestellten Münzzuführvorrichtung in Pfeilrichtung.52 in die erste Prüfstation 1 fällt, wird mittels der Sensorspule 50 ein Signal ausgelöst, das den Sperrzustand einer in der Münzzuführvorrichtung vorgesehenen Sperre bewirkt und aufrecht erhält, bis diese Münze 5 die erste Prüfstation 1 verlassen hat, indem die Stütze 4 aus ihrer dargestellten, die Münze 5 unterstützenden Lage in Pfeilrichtung 15 bewegt wurde, um die Münze 5 in die zweite Prüfstation 8 zu entlassen. Durch das bei der Ankunft der Münze 5 ausgelöste Signal der Sensorpule 50 wird der Schrittmotor 39 in Vorschubrichtung des Fühlers 3 gestartet. Zwischen diesem Motor 39 und dem Ritzel 40 ist eine nicht dargestellte Wellenkupplung mit einem Kontakt vorgesehen, der durch die Zunahme des Drehmoments beim Anstossen beider Fühler 2 und 3 an den Rand der Münze 5 betätigt wird, um den Schrittmotor 39 zu stoppen. Ein Zähler 54 zählt die Impulse, die den Schrittmotor 39, ausgehend von einem vorbestimmten Anfangsabstand der Fühler 2 und 3 bis zum Anstossen beider Fühler 2 und 3 an den Rand der Münze 5 antreiben. Die gezählte Impulszahl entspricht der Fühlervorschubstrecke. Der Microprozessor der Einrichtung ermittelt den Durchmesser der Münze 5, indem er die Vorschubstrecke (bzw. die entsprechende Impulszahl) von einer durch den Anfangsabstand der Fühler 2 und 3 gegebenen Konstanten subtrahiert, und prüft in üblicher Weise, ob die Münze 5 aufgrund ihres Durchmessers eine annehmbare Münze ist.A sensor coil 50 for controlling the coin checking device is inserted into the plate 46. If a coin falls into the first test station 1 in the direction of arrow 52 from a coin feed device (not shown), a signal is triggered by the sensor coil 50, which causes and maintains the locked state of a lock provided in the coin feed device until this coin 5 the first test station 1 has left by moving the support 4 from its illustrated position supporting the coin 5 in the direction of arrow 15 to release the coin 5 into the second test station 8. The stepper motor 39 is started in the feed direction of the sensor 3 by the signal from the sensor coil 50 triggered when the coin 5 arrives. Provided between this motor 39 and the pinion 40 is a shaft coupling, not shown, with a contact which is actuated by the increase in the torque when both sensors 2 and 3 hit the edge of the coin 5 in order to stop the stepping motor 39. A counter 54 counts the pulses which drive the stepper motor 39, starting from a predetermined initial distance between the sensors 2 and 3, until both sensors 2 and 3 are pressed against the edge of the coin 5. The counted number of pulses corresponds to the sensor feed distance. The microprocessor of the device determines the diameter of the coin 5 by subtracting the feed distance (or the corresponding number of pulses) from a constant given by the initial spacing of the sensors 2 and 3, and checks in the usual way whether the coin 5 has one due to its diameter acceptable coin.

Zur zweiten Prüfstation 8 (Fig. 2 und 3) gehören ausser den beiden Stützgliedern 11 und 12 und den Prüfspulen 9 und 10 für die induktive Münzprüfung ein Zahnradgetriebe 57, 58 zum symmetrischen Schwenken der Stützglieder 11 und 12, eine Magnetspule 60 mit Tauchanker 61 zum Verschieben der Spule 9 und ein induktiver Messwertgeber 63, 64, der ein von der Stellung der Spule 9 abhängiges Signal für die Messung der Dicke der Münze 13 liefert. Die zweite Prüfstation 8 ist als ein Schlitten ausgeführt, der mittels Rollen 66, 67 an die Verschiebebahn bildenden Schienen 32 und 33 geführt und mittels des weiter unten näher beschriebenen Verschiebeantriebs 27-30 verschiebbar ist. In ihrer dargestellten, der induktiven Münzprüfung dienenden Ruhelage ist die zweite Prüfstation 8 derart unterhalb der ersten Prüfstation 1, dass eine durch Betätigung der Stütze 4 fallengelassene Münze unmittelbar zwischen die Spulen 9 und 10 und Stützglieder 11 und 12 fällt.In addition to the two support members 11 and 12 and the test coils 9 and 10 for inductive coin testing, the second test station 8 (FIGS. 2 and 3) includes a gear transmission 57, 58 for symmetrically pivoting the support members 11 and 12, a magnetic coil 60 with plunger armature 61 Move the coil 9 and an inductive transmitter 63, 64, which provides a signal dependent on the position of the coil 9 for measuring the thickness of the coin 13. The second test station 8 is designed as a slide which is guided by means of rollers 66, 67 to the rails 32 and 33 forming the sliding track and is displaceable by means of the sliding drive 27-30 described in more detail below. In its illustrated rest position, which serves for inductive coin checking, the second checking station 8 is below the first checking station 1 such that a coin dropped by actuation of the support 4 falls directly between the coils 9 and 10 and supporting members 11 and 12.

Die Teile der zweiten Prüfstation 8 sind an einer Tragplatte 69 angeordnet, an der die Rollen 66 und 67 gelagert sind. An der Tragplatte 69 sind zwei Körper 71 und 72 aus Isoliermaterial durch Bolzen 74 in einem Abstand voneinander gehalten. Im Körper 71 ist die Prüfspule 9 axial verschiebbar gelagert, im Körper 72 ist die andere Prüfspule 10 fest eingebaut. Zwischen den Körpern 71 und 72 sind die schwenkbaren Stützglieder 11 und 12 angeordnet, sie sitzen je auf einer Welle 76 bzw. 77 die in Bohrungen der Körper 71 und 72 gelagert sind. Auf jeder Welle 76 bzw. 77 sitzt eines von zwei miteinander kämmenden Zahnradsegmenten 57 und 58, die das Zahnradgetriebe bilden. Die Prüfspule 9 ist von einer (nur teilweise dargestellten) Druckfeder 79 in Richtung auf die Prüfspule 10 belastet und mit dem Tauchanker 61, dem die Magnetspule 60 zugeordnet ist, und einer Platte 64 aus magnetisch leitendem Material fest verbunden, die zusammen mit einer Induktionsspule 63 den induktiven Messwertgeber bildet, mit dem ein der Dicke der Münze 13 proportionales Signal erzeugt wird, wenn die Spule 60 nicht erregt ist, so dass die Feder 79 die Prüfspule 9 an die Münze 11 und dadurch die Münze 11 an die Prüfspule 10 drückt. Die einander zugewandten Stirnflächen der Prüfspulen 9 und 10 tragen dünne Auflagen mit leicht sphärisch gekrümmten Aussenflächen. Dadurch wird erreicht, dass eine eventuelle Krümmung der Münze weder die induktive Prüfung noch die Prüfung der Münzdicke beeinflusst. Der Messwertgeber ist so ausgeführt, dass sein Messwert eine lineare Funktion der Münzdicke ist, so dass diese einfach durch Subtraktion des Messwertes von einer Konstanten erhalten werden kann.The parts of the second test station 8 are arranged on a support plate 69 on which the rollers 66 and 67 are mounted. On the support plate 69, two bodies 71 and 72 made of insulating material are held at a distance from one another by bolts 74. The test coil 9 is axially displaceably mounted in the body 71, the other test coil 10 is permanently installed in the body 72. The pivotable support members 11 and 12 are arranged between the bodies 71 and 72, and they each sit on a shaft 76 and 77, respectively, which are mounted in bores in the bodies 71 and 72. On each shaft 76 and 77 there is one of two intermeshing gear segments 57 and 58 which form the gear transmission. The test coil 9 is loaded by a compression spring 79 (only partially shown) in the direction of the test coil 10 and is firmly connected to the plunger armature 61, to which the magnet coil 60 is assigned, and a plate 64 made of magnetically conductive material, which together with an induction coil 63 forms the inductive transmitter with which a signal proportional to the thickness of the coin 13 is generated when the coil 60 is not energized, so that the spring 79 connects the test coil 9 to the coin 11 and thereby presses the coin 11 onto the test coil 10. The mutually facing end faces of the test coils 9 and 10 have thin supports with slightly spherically curved outer surfaces. This ensures that any curvature of the coin does not influence the inductive test or the test of the coin thickness. The transmitter is designed so that its measured value is a linear function of the coin thickness, so that it can be obtained simply by subtracting the measured value from a constant.

Das Schubkurvengetriebe (Fig. 2 und 3) hat in seiner ersten Getriebestufe einen fest mit dem Fühler 3 verbundenen Kurventräger 18 (vergl. auch Fig. 4), an dessen Kurve 81 ein Zapfen 19 geführt ist. Der Zapfen 19 ist fest mit dem Kurventrägen 23 der zweiten Getriebestufe verbunden, der mittels an der Gehäuserückwand 83 befestigter Bolzen 84, 85, die in Langlöchern .87, 88 (Fig. 3) des Kurventrägers 23 geführt sind, vertikal verschiebbar ist. An der Kurve 90 des zweiten Kurventrägers 23 ist ein Zapfen 24 geführt, der am Zahnradsegment 57 exzentrisch befestigt ist, so dass er einen Kurbelzapfen zum Schwenken der Stützglieder 11 und 12 bildet. Nicht dargestellte Anschläge begrenzen die Drehbarkeit der Zahnradsegmente 57 und 58, und eine nicht dargestellte Rückholfeder ist bestrebt, die Stützglieder 11 und 12 in einem Abstand voneinander zu halten, bei dem sie die Münze 13 nicht mehr unterstützen. Durch diese Rückholfeder wird auch ein Kraftschluss der zweiten Getriebestufe 23, 24 gewährleistet. In der dargestellten Ruhelage der zweiten Prüfstation 8 liegt der Bolzen 24 an einem steigungsfreien Teil 91 der Kurve 90 des Kurventrägers 23. Dabei folgt der Zapfen 24 der vertikalen Abtriebsbewegung der ersten Getriebestufe 18, 19. Im dargestellten Beispiel ist deren Kurve 81 gerade und die einander zugewandten Stützflächen 93 und 94 der Stützglieder 11 und 12 sind so konkav gekrümmt, dass sie beim jeweiligen Abstand der Fühler 2 und 3 eine Münze 13, deren Durchmesser diesem Abstand entspricht, in bezug auf die Prüfspulen 9 und 10 zentriert halten. Dies kann grundsätzlich auch mit geraden Stützgliedern und einer gekrümmten Kurve 81 oder dadurch erreicht werden, dass sowohl die Kurve 81 als auch die Stützflächen 93, 94 gekrümmt sind. Dabei ist auch zu beachten, dass der Zusammenhang zwischen der vertikalen Bewegung des Kurbelzapfens 24 und der Drehung der Zahnradsegmente 57 und 58 nicht linear ist.The thrust cam gear (FIGS. 2 and 3) has in its first gear stage a cam carrier 18 (see also FIG. 4) which is fixedly connected to the sensor 3 and on the curve 81 of which a pin 19 is guided. The pin 19 is fixedly connected to the cam carrier 23 of the second gear stage, which is vertically displaceable by means of bolts 84, 85 fastened to the rear wall 83 of the housing, which are guided in elongated holes .87, 88 (FIG. 3) of the cam carrier 23. On the curve 90 of the second cam bracket 23, a pin 24 is guided, which is attached to the gear segment 57 eccentrically, so that it forms a crank pin for pivoting the support members 11 and 12. Stops, not shown, limit the rotatability of the gear segments 57 and 58, and a return spring, not shown, strives to keep the support members 11 and 12 at a distance from each other at which they no longer support the coin 13. This return spring also ensures a frictional connection of the second gear stage 23, 24. In the shown rest position of the second test station 8, the pin 24 lies on a slope-free part 91 of the curve 90 of the cam carrier 23. The pin 24 follows the vertical output movement of the first gear stage 18, 19. In the example shown, its curve 81 is straight and the other facing support surfaces 93 and 94 of the support members 11 and 12 are curved so that they concave keep a coin 13, the diameter of which corresponds to this distance, centered with respect to the test coils 9 and 10 at the respective distance between the sensors 2 and 3. In principle, this can also be achieved with straight support members and a curved curve 81, or in that both the curve 81 and the support surfaces 93, 94 are curved. It should also be noted that the relationship between the vertical movement of the crank pin 24 and the rotation of the gear segments 57 and 58 is not linear.

Wenn die zweite Prüfstation 8 ihre dargestellte Lage in Fig. 3 in Pfeilrichtung 25 verlässt, wird der Zapfen 24 an der Kurve 91 nach unten geführt, und die Stützglieder 11 und 12 schwenken auseinander, sie erreichen jedoch wieder ihre durch den Abstand der Fühler 2 und 3 bestimmte Lage, wenn die zweite Prüfstation 8 in die dargestellte Lage zurückkehrt, wobei der Zapfen 24 wieder bis auf den Kurventeil 91 geführt wird.When the second test station 8 leaves its position shown in Fig. 3 in the direction of arrow 25, the pin 24 is guided downward on the curve 91, and the support members 11 and 12 pivot apart, but they reach their again by the distance of the sensors 2 and 3 determined position when the second test station 8 returns to the position shown, the pin 24 being guided back to the curve part 91.

Der Verschiebeantrieb (Fig. 1) zum Verschieben der zweiten Prüfstation 8 an der durch die Schienen 32 und 33 gebildeten Verschiebebahn ist ein Seiltrieb mit einem praktisch undehnbaren Seil 27, einer Umlenkrolle 28 und einer von einem Schrittmotor 29 angetriebenen Seiltrommel 30. Die zweite Prüfstation 8 ist mit einer Stelle eines der Trume des Seiles 27 verbunden. Die Enden des Seiles 27 sind an der Seiltrommel 30 befestigt, und an diese Enden anschliessende Endstücke des Seiles 27 sind in entgegengesetzten Richtungen auf die Seiltrommel 30 gewickelt, so dass bei einer Drehung der Seiltrommel 30 das Seil 27 an einem Ende aufgewickelt und am anderen Ende abgewickelt wird. Auf diese Weise wird ein Schlupf des Seiles 27 verhindert und erreicht, dass die zweite Prüfstation 8 . jeweils um eine Wegstrecke verschoben wird, die genau der Anzahl der den Schrittmotor 29 und dadurch die Seiltrommel 30 antreibenden Impulse entspricht.The displacement drive (FIG. 1) for displacing the second test station 8 on the displacement path formed by the rails 32 and 33 is a cable drive with a practically inextensible cable 27, a deflection roller 28 and a cable drum 30 driven by a stepping motor 29. The second test station 8 is connected to a point of one of the dreams of the rope 27. The ends of the rope 27 are fastened to the rope drum 30, and end pieces of the rope 27 adjoining these ends are wound onto the rope drum 30 in opposite directions, so that when the rope drum 30 rotates, the rope 27 is wound at one end and at the other end is handled. In this way, slippage of the rope 27 is prevented and the second test station 8 is reached. is each shifted by a distance that exactly Number of impulses corresponding to the stepping motor 29 and thereby the cable drum 30.

Zur Prüfung einer Münze arbeiten die oben bereits mit Hinweisen auf ihre individuellen Funktionen beschriebenen Baugruppen der Einrichtung wie folgt zusammen: Im Ruhezustand der Einrichtung haben die Fühler 2 und 3 den vorbestimmten Anfangsabstand, der grösser als der Durchmesser der grössten der anzunehmenden Münzen ist. Die Stütze 4 und die zweite Prüfstation 8 sind in ihrer in den Zeichnungen dargestellten Lage. Eine von der Münzzuführvorrichtung in Pfeilrichtung 52 ankommende Münze fällt zwischen die Fühler 2 und 3 auf die Stütze 4 (Münze 5 in Fig. 2, und 4). Das von der Sensorspule 50 (Fig. 2) ausgelöste Signal startet den Schrittmotor 39 (Fig. 4), der den Vorschub des Fühlers 3 bewirkt, bis dieser an die Münze 5 und die Münze 5 an den Fühler 2 anstösst. Während des Vorschubs des Fühlers 3 läuft der Zapfen 19 auf der Kurve 81 des ersten Kurventrägers 18 (Fig. 3) und hebt den fest mit dem Zapfen 19 verbundenen zweiten Kurventräger 23 und damit den auf dessen Kurventeil 91 gestützten Kurbelzapfen 24, wodurch die Stützglieder 11 und 12 am Ende des Vorschubs des Fühlers 3 die Stellung haben, die dazu geeignet ist, die Münze 5 in bezug auf die Prüfspulen 9 und 10 zentriert zu unterstützen. Während des Vorschubs des Fühlers 3 zählt der Zähler 54 die dem Schrittmotor 39 antreibenden Impulse. Der Mikroprozessor ermittelt aus der gezählten Impulszahl den Münzdurchmesser. Nach dem Fühlervorschub wird die Stütze 4 vorübergehend zur Seite geschwenkt (Pfeil 15, Fig. 2), um die Münze 5 in die zweite Prüfstation 8 zu entlassen. Dazu werden ausserdem die Fühler 2 und 3 von der Münze 5 gelöst, indem der Motor 39 durch eine bestimmte, kleine Anzahl Impulse in Rückzugrichtung des Fühlers 3 angetrieben wird. Diese kleine Rückzugstrecke ist bei der Formgebung der Stützflächen der Stützglieder 11 und 12 (oder beim Verlauf der Kurve 81) berücksichtigt..To test a coin, the components of the device already described above with reference to their individual functions work together as follows: When the device is in the idle state, sensors 2 and 3 have the predetermined initial distance, which is larger than the diameter of the largest of the coins to be accepted. The support 4 and the second test station 8 are in their position shown in the drawings. A coin arriving from the coin feed device in the direction of arrow 52 falls between the sensors 2 and 3 on the support 4 (coin 5 in FIGS. 2 and 4). The signal triggered by the sensor coil 50 (FIG. 2) starts the stepping motor 39 (FIG. 4), which feeds the sensor 3 until it hits the coin 5 and the coin 5 on the sensor 2. During the advance of the sensor 3, the pin 19 runs on the curve 81 of the first cam carrier 18 (FIG. 3) and lifts the second cam carrier 23, which is firmly connected to the pin 19, and thus the crank pin 24 supported on the cam part 91 thereof, as a result of which the support members 11 and 12 at the end of the feed of the sensor 3 have the position which is suitable for supporting the coin 5 in relation to the test coils 9 and 10. During the advance of the sensor 3, the counter 54 counts the pulses driving the stepping motor 39. The microprocessor determines the coin diameter from the counted number of pulses. After the sensor has advanced, the support 4 is temporarily pivoted to the side (arrow 15, FIG. 2) in order to release the coin 5 into the second test station 8. For this purpose, the sensors 2 and 3 are also detached from the coin 5 by the motor 39 being driven in the retracting direction of the sensor 3 by a certain small number of pulses. This small retreat distance is the shape of the Support surfaces of the support members 11 and 12 (or in the course of curve 81) are taken into account.

Die Münze fällt zwischen die Blöcke 71 und 72 bzw. Prüfspulen 9 und 10 und die Stützglieder 11 und 12, welche die Münze in der in bezug auf die Spulen 9 und 10 zentrierten, mit 13 bezeichneten Lager unterstützen. Dabei ist die Magnetspule 60 erregt, um die Spule 9 entgegen die Kraft der Druckfeder 79 so weit zurückzuziehen, dass sie nicht in den Zwischenraum zwischen den Blöcken 71 und 72 hineinragt. Nachdem die Münze in die zweite Prüfstation 8 gefallen ist, was beispielsweise am Signal der Spulen 9 und 10 erkannt werden kann, wird die Erregung der Magnetspule 60 ausgeschaltet, woraufhin unter der Wirkung der Feder 79 die Spule 9 an die Münze 13 und diese Münze an die Prüfspule 10 gedrückt wird. Während die Prüfspulen 9 und 10 einander gegenüber an der Münze 7 anliegen, wird diese in an sich bekannnter Weise induktiv geprüft. Gleichzeitig wird mittels des Messwertgebers 63, 64 ein Signal für die Messung der Dicke der Münze 7 erzeugt.The coin falls between the blocks 71 and 72 or test coils 9 and 10 and the support members 11 and 12 which support the coin in the bearing, which is centered with respect to the coils 9 and 10 and is designated by 13. The magnetic coil 60 is energized to pull the coil 9 against the force of the compression spring 79 so far that it does not protrude into the space between the blocks 71 and 72. After the coin has fallen into the second test station 8, which can be recognized, for example, by the signal from the coils 9 and 10, the excitation of the magnetic coil 60 is switched off, whereupon the coil 9 contacts the coin 13 and this coin under the action of the spring 79 the P rüfspule is pressed 10th While the test coils 9 and 10 lie opposite one another on the coin 7, this is tested inductively in a manner known per se. At the same time, a signal for measuring the thickness of the coin 7 is generated by means of the transmitter 63, 64.

Nach dem Ausschalten der Erregung der Magnetspule 60 wird der Schrittmotor 39 zum Zurückziehen des Fühlers 3 in dessen Ausgangslage angetrieben. Dabei läuft der Zapfen 19 auf der Kurve 81 abwärts (Fig. 3 und 4) und verschiebt den Kurventräger 23 und damit den Kurbelzapfen 24 nach unten, so dass die Stützglieder 11 und 12 auseinandergehen und die Münze 13 nicht mehr unterstützen. Die Münze 13 ist jedoch noch in der zweiten Prüfstation 8 gehalten, weil sie unter Wirkung der Druckfeder 79 zwischen deren Prüfspulen 9 und 10 festgehalten ist.After the excitation of the magnetic coil 60 has been switched off, the stepping motor 39 is driven to retract the sensor 3 in its initial position. The pin 19 runs downward on the curve 81 (FIGS. 3 and 4) and moves the cam carrier 23 and thus the crank pin 24 downward, so that the support members 11 and 12 diverge and no longer support the coin 13. However, the coin 13 is still held in the second test station 8 because it is held between the test coils 9 and 10 under the action of the compression spring 79.

Der Mikroprozessor ermittelt auf Grund des gemessenen Durchmessers und der gemessenen Dicke und des Ergebnisses der induktiven Prüfung, ob die Münze 13 annehmbar ist. Ist sie nicht annehmbar, so wird die Magnetspule 60 kurzzeitig erregt, wobei die Spule 9 zurückgezogen wird und die-von den Stützgliedern 11 und 12 nicht mehr unterstützte Münze 13 durch den Ausgang 35 (Fig. 1 und 2) in den nicht dargestellten Münzrückgabekanal fällt.The microprocessor uses the measured diameter and the measured thickness and the result of the inductive test to determine whether the coin 13 is acceptable. Is if it is not acceptable, the magnetic coil 60 is briefly energized, the coil 9 being withdrawn and the coin 13 no longer supported by the support members 11 and 12 falling through the outlet 35 (FIGS. 1 and 2) into the coin return channel (not shown).

Wenn die Münze zu einer der annehmbaren Münzarten gehört, wird die zweite Prüfstation 8 mittels des Verschiebeantriebs 27 bis 30 (Fig. 1) an denjenigen der Ausgänge 36 geschoben, der in den für die betreffende Münzart vorgesehenen (nicht dargestellten) Münzspeicher führt, und die Münze 13 wird durch kurzzeitige Erregung der Magnetspule 60 in diesen Münzspeicher entlassen. Daraufhin wird die zweite Prüfstation 8 wieder in ihre Ruhelage zurückgeschoben. Falls inzwischen eine weiter Münze in die erste Prüfstation 1 gelangt ist, haben deren Fühler 2 und 3 bereits den dem Durchmesser dieser Münze entsprechenden Abstand. Wenn die zweite Prüfstation 8 sich nun ihrer Ruhelage nähert, läuft der Kurbelzapfen 24 auf der Kurve 90 an deren Kurventeil 91 in die Stellung, in der die Stützglieder 11 und 12 diese Münze in der in bezug auf die Prüfspulen 9 und 10 zentrierten Lagen aufnehmen, wenn sie in die zweite Prüfstation 8 fällt, in der sie geprüft und aus der sie durch einen der Ausgänge 35 und 36 entlassen wird, wie vorher beschrieben.If the coin belongs to one of the acceptable coin types, the second test station 8 is pushed by means of the shift drive 27 to 30 (FIG. 1) to that of the outputs 36, which leads into the coin store (not shown) provided for the coin type in question, and that Coin 13 is released into this coin store by briefly exciting magnetic coil 60. The second test station 8 is then pushed back into its rest position. If a further coin has meanwhile reached the first test station 1, its sensors 2 and 3 have already the distance corresponding to the diameter of this coin. When the second test station 8 now approaches its rest position, the crank pin 24 runs on the curve 90 on the curve part 91 thereof in the position in which the support members 11 and 12 receive this coin in the position centered with respect to the test coils 9 and 10, when it falls into the second test station 8, where it is tested and from which it is released through one of the exits 35 and 36, as previously described.

Als beispielsweise Variante der beschriebenen Ausführungsform der Münzenprüfeinrichtung kann an Stelle des Zahnstangengetriebes 40, 41 ein anderes lineares Getriebe oder ein Getriebe, dessen Abtriebsschub keine lineare Funktion der Antriebsdrehung ist, verwendet werden. Auch im letzteren Falle ist der Durchmesser der Münze genau bestimmbar, weil die Funktion durch die Geometrie des Getriebes rechnerisch definiert ist, so dass sie im Mikroprozessor berücksichtigt werden kann. Die Fühler 2, 3 könnten auch z.B. mittels zweier mit entgegengesetzten Seiten des Ritzels 40 kämmender Zahnstangen oder mittels einer ein Links- und ein Rechtsgewinde aufweisenden Spindel entgegengesetzt gleich verschiebbar sein, wobei ein einziges, senkrecht zu den Fühlern verschiebbares Stützglied die seitlich an den Fühlern gestützte Münze in der in bezug auf eine oder zwei koaxiale Prüfspulen zentrierten Lage unterstützt. Dabei ist die erforderliche Verschiebung des Stützgliedes proportional der Verschiebung jedes der Fühler. Natürlich können die beiden Zahnradsegmente 57 und 58 durch gleichwirkende Mittel, z.B. zwei durch eine Schubstange miteinander verbundene Kurbeln, ersetzt und statt entgegengesetzt gleich schwenkbar auch entgegengesetzt gleich verschiebbar sein. An ihrer Stelle könnte auch ein senkrecht zu den Fühlern verschiebbares Stützglied mit zwei nach unten konvergierenden Stützflächen zum Unterstützen der Münze an zwei einander gegenüber liegenden Randstellen vorgesehen werden, das, ebenso wie das oben erwähnte, einzige Stützglied, beispielsweise parallel zur Prüfspulenachse verschiebbar ist, um die Münze fallen zu lassen.As a variant of the described embodiment of the coin checking device, for example, another linear gear or a gear whose output thrust is not a linear function of the drive rotation can be used instead of the rack and pinion gear 40, 41. In the latter case, too, the diameter of the coin can be determined precisely because the function is mathematically defined by the geometry of the gear so that it can be taken into account in the microprocessor. The sensors 2, 3 could, for example, also be displaceable in opposite directions by means of two toothed racks meshing with opposite sides of the pinion 40 or by means of a spindle having a left-hand and a right-hand thread, with a single support member which can be displaced perpendicularly to the sensors in relation to the coin supported laterally on the sensors supported on one or two coaxial test coils. The required displacement of the support member is proportional to the displacement of each of the sensors. Of course, the two gear segments 57 and 58 can be replaced by means having the same effect, for example two cranks which are connected to one another by a push rod, and instead of being pivotable in opposite directions, they can also be displaced in opposite directions. In its place, a support member which can be displaced perpendicularly to the sensors and has two support surfaces converging downwards to support the coin at two mutually opposite edge locations could be provided, which, like the aforementioned support member, can be displaced, for example, parallel to the test coil axis by to drop the coin.

Claims (9)

1. Münzenprüfeinrichtung, gekennzeichnet durch zwei Fühler (2, 3) deren Abstand mittels eines Schubantriebs (39, 40, 41) veränderbar ist, um die Fühler (2, 3) einander diametral gegenüber an den Rand der Münze (5) anzulegen, und mindestens eine Vorrichtung (54; 18, 19, 23, 24) zur Bildung wenigstens einer vom Abstand der Fühler (2, 3) abhängigen Steuergrössen.1. coin testing device, characterized by two sensors (2, 3) whose distance can be changed by means of a thrust drive (39, 40, 41) in order to place the sensors (2, 3) diametrically opposite one another at the edge of the coin (5), and at least one device (54; 18, 19, 23, 24) for forming at least one control variable dependent on the distance between the sensors (2, 3). 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Schubantrieb (39, 40, 41) ein von einem Schrittmotor (39) angetriebenes, vorzugsweise lineares Getriebe (40, 41) ist, und ein Zähler (54) für die den Schrittmotor (39) von einem vorbestimmten Anfangsabstand der Fühler (2, 3) bis zum Anstossen der Fühler (2, 3) an den Rand der Münze (5) antreibenden Impulse vorgesehen ist.2. Device according to claim 1, characterized in that the thrust drive (39, 40, 41) is a preferably linear transmission (40, 41) driven by a stepping motor (39), and a counter (54) for which the stepping motor ( 39) from a predetermined initial distance between the sensors (2, 3) until the sensors (2, 3) hit the edge of the coin (5) driving pulses. 3. Einrichtung nach Anspruch 1 oder 2, gekennzeichnet durch ein zusammen mit dem Schubantrieb (39, 40, 41) angetriebenen Getriebe, vorzugsweise Schubkurvengetriebe (18/19, 23/24), dessen Abtriebsglied (24) wenigstens ein Stützglied (11, 12) bewegt, um eine Münze (13), deren Durchmesser dem jeweiligen Abstand der Fühler (2, 3) entspricht, in einer zu einer oder zwei Prüfspulen (9, 10) einer induktiven Münzprüfvorrichtung zentrierten Lage zu unterstützen.3. Device according to claim 1 or 2, characterized by a together with the thrust drive (39, 40, 41) driven gear, preferably thrust cam gear (18/19, 23/24), the output member (24) at least one support member (11, 12th ) moved in order to support a coin (13), the diameter of which corresponds to the respective distance between the sensors (2, 3), in a position centered on one or two test coils (9, 10) of an inductive coin testing device. 4. Einrichtung nach Anspruch 3, gekennzeichnet durch Stützglieder (11, 12), die nach unten konvergierende, gerade oder konvex gekrümmte Stützflächen (93, 94) zum Unterstützen der Münze (13) an zwei einander gegenüberliegenden Randstellen aufweisen, und entgegengesetzt gleich bewegbar, vorzugsweise mittels zweier miteinander kämmender Zahnradsegmente (57, 58) entgegengesetzt gleich schwenkbar sind, wobei das Abtriebsglied (24) des Getriebes (18/19, 23/24) an einem (57) der Zahnradsegmente (57, 58) angreift.4. Device according to claim 3, characterized by support members (11, 12) which have downwardly converging, straight or convex curved support surfaces (93, 94) for supporting the coin (13) at two mutually opposite edge points and can be moved in opposite directions, preferably by means of two together Intermeshing gear segments (57, 58) can be pivoted in opposite directions, the output member (24) of the gear (18/19, 23/24) engaging one (57) of the gear segments (57, 58). 5. Einrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein Zwischenraum zwischen vorzugsweise sphärisch gekrümmten Flächen zweier Teile, von denen zweckmässig wenigstens einer eine Prüfspule (9, 10) zur induktiven Münzenprüfung ist, durch Verschieben eines (9) dieser Teile veränderbar ist, um einen der Teile (9, 10) an die Vorderseite und den anderen an die Rückseite einer Münze anzulegen, und der verschiebbare Teil (9) mit einem Messwertgeber (63, 64) für ein der Lage dieses Teiles (9) entsprechendes Signal verbunden ist.5. Device according to one of claims 1 to 4, characterized in that a space between preferably spherically curved surfaces of two parts, of which expediently at least one is a test coil (9, 10) for inductive coin testing, by moving one (9) of these parts can be changed in order to place one of the parts (9, 10) on the front and the other on the back of a coin, and the displaceable part (9) with a sensor (63, 64) for a position corresponding to this part (9) Signal is connected. 6. Einrichtung nach Anspruch 5, gekennzeichnet durch einen Elektromagneten, zweckmässig eine Magnetspule (60) mit Tauchanker (61) zum Verschieben des verschiebbaren Teiles (9) gegen die Kraft einer Feder (79).6. Device according to claim 5, characterized by an electromagnet, expediently a magnet coil (60) with plunger (61) for moving the displaceable part (9) against the force of a spring (79). 7. Einrichtung nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass eine das bzw. die Stützglieder (11, 12) aufweisende Prüfstation (8) zur Verteilung der geprüften Münzen an verschiedene Ausgänge (35, 36) der Einrichtung bewegbar, insbesondere von einem Verschiebeantrieb (27 - 30) an einer Verschiebebahn ( 32, 33) verschiebbar ist.7. Device according to one of claims 3 to 6, characterized in that the one or more support members (11, 12) having test station (8) for distributing the tested coins to different outputs (35, 36) of the device, in particular from a displacement drive (27-30) on a displacement track (32, 33) is displaceable. 8. Einrichtung nach einem der Ansprüche 3 - 7, dadurch gekennzeichnet, dass die Fühler (2, 3) und der Schubantrieb (39 - 41) in einer ersten Prüfstation (1) und die Stützglieder (11, 12) sowie die Prüfspule oder - spulen (9, 10) in einer zweiten Prüfstation (8) angeordnet sind, und die erste Prüfstation (1) mit einer Stütze (4) ausgerüstet ist, die aus einer Stellung zum Unterstützen einer Münze (5) in eine zweite Stellung bewegbar ist, um die Münze aus der ersten Prüfstation (1) zwischen die Stützglieder (11, 12) der zweiten Prüfstation (8) fallenzulassen..8. Device according to one of claims 3-7, characterized in that the sensors (2, 3) and the thrust drive (39 - 41) in a first test station (1) and the support members (11, 12) and the test coil or - coils (9, 10) are arranged in a second test station (8), and the first test station (1) with a support (4) is equipped, which can be moved from a position to support a coin (5) to a second position in order to drop the coin from the first test station (1) between the support members (11, 12) of the second test station (8). 9. Einrichtung nach Anspruch 8, dadurch gekennzeichnet, dass wenigstens einer (3) der Fühler (2, 3) zusammen mit einem ersten Kurventräger (18), verschiebbar ist, an dessen Kurve (81) ein erstes Glied (19) geführt ist, das fest mit einem vertikal verschiebbaren, zweiten Kurventräger (23) verbunden ist, an dessen Kurve (91) ein die Stützglieder (11, 12) bewegendes, zweites Glied (24) geführt ist, das an einem horizontalen Teil (90) dieser Kurve (91) anliegend die Stützglieder (11, 12) zum Unterstützen der Münze (13) in deren (13) zentrierter Lage hält, wenn der Abstand der Fühler (2, 3) dem Münzdurchmesser entspricht und die zweite Prüfstation (8) sich unter der ersten (1) befindet und das zweite Glied (24) an einem schrägen Teil dieser Kurve (91) geführt ist, um den Abstand der Stützglieder (11, 12) zu vergrössern, wenn die zweite Prüfstation (8) ihre Lage unter der ersten (1) verlässt, bzw. diesen Abstand zu verkleinern, wenn die zweite Prüfstation (8) sich dieser Lager wieder nähert.9. Device according to claim 8, characterized in that at least one (3) of the sensors (2, 3) is displaceable together with a first curve carrier (18), on the curve (81) of which a first link (19) is guided, which is fixedly connected to a vertically displaceable, second cam carrier (23), on the curve (91) of which a second link (24) which moves the support members (11, 12) is guided and which is connected to a horizontal part (90) of this curve ( 91) holds the support members (11, 12) for supporting the coin (13) in their (13) centered position when the distance between the sensors (2, 3) corresponds to the coin diameter and the second test station (8) is under the first (1) and the second link (24) is guided on an inclined part of this curve (91) in order to increase the distance between the support links (11, 12) when the second test station (8) is located below the first (1st ) leaves, or reduce this distance when the second test station (8) approaches this bearing again.
EP87106761A 1986-05-14 1987-05-09 Coin checking apparatus Expired - Lifetime EP0245805B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87106761T ATE79190T1 (en) 1986-05-14 1987-05-09 COIN VALIDATION DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1965/86 1986-05-14
CH1965/86A CH670717A5 (en) 1986-05-14 1986-05-14

Publications (3)

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EP0245805A2 true EP0245805A2 (en) 1987-11-19
EP0245805A3 EP0245805A3 (en) 1988-09-21
EP0245805B1 EP0245805B1 (en) 1992-08-05

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ID=4222753

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EP87106761A Expired - Lifetime EP0245805B1 (en) 1986-05-14 1987-05-09 Coin checking apparatus

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US (1) US4815579A (en)
EP (1) EP0245805B1 (en)
AT (1) ATE79190T1 (en)
CH (1) CH670717A5 (en)
DE (1) DE3780858D1 (en)

Cited By (3)

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EP0508560A2 (en) * 1991-04-11 1992-10-14 ACT GESELLSCHAFT FÜR SOFT UND HARDWARESYSTEME mbH Method and device for checking coins
DE4139503A1 (en) * 1991-11-27 1993-06-03 Act Soft Hardware Coin testing method for measuring coin dia. during centering phase
EP0546341A1 (en) 1991-12-10 1993-06-16 Ascom Autelca Ag Coin testing method

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JPH0636205B2 (en) * 1988-11-15 1994-05-11 旭精工株式会社 Coin sorter
US6907977B1 (en) * 2000-01-28 2005-06-21 Cashcode Company Inc. Capacitance sensor for coin evaluation
US8170831B2 (en) * 2009-04-29 2012-05-01 Maw-Yuan Liou Apparatus and method for measuring dimension of circular object
AT509885B1 (en) * 2010-12-28 2011-12-15 Novotech Elektronik Gmbh APPARATUS AND METHOD FOR COIN DETECTION
US10957445B2 (en) 2017-10-05 2021-03-23 Hill-Rom Services, Inc. Caregiver and staff information system

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AT122301B (en) * 1927-05-09 1931-04-10 Edmund Dr Szeparowicz Embossing tester for self-sellers.
US2003771A (en) * 1933-11-22 1935-06-04 Harry E Rubens Coin testing device
US2881975A (en) * 1956-07-18 1959-04-14 Clyde S Bower Coin register
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GB861623A (en) * 1959-07-13 1961-02-22 Raffaele Spinelli Coin selecting device and apparatus
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EP0122732A2 (en) * 1983-03-21 1984-10-24 Starpoint Electrics Limited Coin checking

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508560A2 (en) * 1991-04-11 1992-10-14 ACT GESELLSCHAFT FÜR SOFT UND HARDWARESYSTEME mbH Method and device for checking coins
EP0508560A3 (en) * 1991-04-11 1995-08-23 Act Soft Hardware Method and device for checking coins
DE4139503A1 (en) * 1991-11-27 1993-06-03 Act Soft Hardware Coin testing method for measuring coin dia. during centering phase
EP0546341A1 (en) 1991-12-10 1993-06-16 Ascom Autelca Ag Coin testing method

Also Published As

Publication number Publication date
CH670717A5 (en) 1989-06-30
ATE79190T1 (en) 1992-08-15
DE3780858D1 (en) 1992-09-10
EP0245805B1 (en) 1992-08-05
US4815579A (en) 1989-03-28
EP0245805A3 (en) 1988-09-21

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