US847157A - Signaling apparatus. - Google Patents

Description

N0.' s47,157. PATBNTED-MAR.12, 1907.

H. G. BROWN & B. DE M. MALAN.

SIGNALING APPARATUS.

APPLIUATION FILED LPR.4,1905'.

3 SHEIZTB-BHBHT 11 Iii:-

PATENTED MAR. 12,19071 H. G. BROWN & E. DE M. MALAN. j

SIGNALING APPARATUS.

APPLIGATION FILED 12.4, 1905.

6 3 SHEETS-SHEET 2.

I N0: 847,157. PATENTBD MAR. 121907.

H. G. BROWN 8: E. DE M. MALAN. SIGNALING APPARATUS.

APPLIUATION FILED APR. 4,1905.

UNiTnn STATES: P 111 oFFIoE.

HAROLD GILBERT BROWN, OF WE T EALINQLONDON, ANl) ERNEST- DE MERINDQL MALAN, OF HIGHGATE, LONDON ENGLAND, ASSIGNORS OF ONE-THIRD TO JAMES HENRY NEAL, OF 'BOSTON, MASSACHUSETTS.

- SIGNALING APPARATUS.

Specification of Letters Patent.

mated March 2, 1907. a

{replication filed Apr-i1 1, 1905. Serial No. 253,349.

' To (LZZ whom it may concern.-

,America, and ERNEST DE M 'lnrNnon MALAN,

a subject of the King of England, residing, respectively, at West Ealing and Highgate, London, En land, have invented certain new and useful mprovement's in or Relating to Signaling Apparatus, of which the following This invention relates to "signaling apparatus, and has particular reference to mechanism applicable, among other analogous uses,

. for signaling the description of a train fromone s1gnal-cabin to another.

. The primary object of the invention, which is hereinafter described with particular reference to railway signaling,- but only for convenience of description and by 'way of example. and not by way of limitation, is the construction of-what may be termed a magazine -reoeiver"-that is, an instrument'which .can receive, store, and exhibit in the samefl sequence and-individuality as that-in which they were despatched successive signals relating to a number of trains; The exhibition of the signals is preferably, though notnccessarily, brought about by meansof an annunciator wor 'ng' in combination with the magazine-receiver and announcing the stored signals .in the same succession as that in which they were primarilfidespatched. In its essential features signaling appa ratus according to this invention comprises a frame, successively-disposed groups of indicating members thereon, and means operating on the groups in succession and selectively .on the indicating 'me'mbers ofeach ,group.

The annunciator when employed is provided with sections adapted to cooperate with the indicating members ofeach group, and relative motion is produced by any convenient means between. the groups of indicating .members and the annunciator-sectionsQ The a paratus is preferably, though not necessari y, operated electrically and is so (lescribe'd-in this specification.

A sending instrument or transmitter 0f any convenient type is, according to the present'invention, combined with the magazinereceiver aforesaid and controls a number of circuitsin the magazine-receiver, WlllGh in various combinations represent the train descriptions. The particular combination standing for a given description may be setively to fixed contacts in-the transmitter.

For example, with four circuitsthat is, four 4 ative positions, each position being labeled with a distinct train description.

The magazine-receiver is. provided with movable members preferably in the form of plungers which are arranged in groups or rows, the number of members in each group corresponding to the numberof circuits, so thatin the example above taken there would be four movable plungei's in each group. Electromagneti'c selective mechanism connected with; the transmitter circuits is arranged in the magazine-receiver, so that on the receipt of a signal the plungers in one row are moved relatively to their sup ortingframe'to correspond with the particul arcomhination of circuits selected by the transmitter. Relative motion can take place between the magazine-receiver frame and the electromagnetic mechanism, and preferably the frame is shifted step by step relatively to the fixed electromagnetic 'mechanism as each signal is received, so that each group of plun g'ers is brought in turn into cooperative position with regard to,the electromagnetic mechanism. Thus, for example, it five different signals are sent in succession they will be represented by five groups of plungers} one or more of the pl ngers in each preferably each plun er whenshi ted by the electromagneticmec anism=is arranged to clos'e'either immediately or subsequently anelectric circuit which operates either alone or in conjunction with the other circu ts closed by the plungers in the same row to give a visible signal on an annunciator.

The annunciator is provided with sections adapted to cooperate'withtlie plungers and having contacts closed by the p ungers y when 5'5 lected, say, by a commutator moving relap being moved relatively to the frame in accordance with the signal.

- I the latter are set in theirsignaling positions. These sections and contacts are conveniently carried upon a movable support forming part of the magazine-receiver and set initially 'so that the contacts. are in juxtaposition with the-group of plun'gers that isto be operated by the first-received signal. This support moves with the frame as signals are received and stored, but is moved step by step relatively to the frame when the received signals I are sent onward from the magazine-receiver. Thus, supposing station A sends three train descriptions to station B, 'so' long as B does not communicate any'of these descriptions I tion.

to C the support carrying the annunciatoroontacts'in bs receiver does not move relatively to the frame, but moves with the frame,- that brought the plungers 'for these descriptions group by j group into. cooperation with the setting electromagnetic mechanism. As soon, however, as B transmit-s to C the first signal he has received from A the support carrying B's armunciator-contacts' is moved one step relativeiy to the frame and in a direction opposite to that in which itmoved with the frame. This movement brings the annunciator-contacts carried by the support into connection with-the next row of previously-set plungers, so .thatthe' next stored signal is announced "at Bs' station. The same relative movement of the support and the frame may be utilized to'restore the pre- Conveniently the niotion of the magazinereceiver frame is brought about by a step-bystep mechanism operated by a weight and controlled by an electromagnet, the circuit of which is closed by the transmitter at the sending station. nicated to 'the annunciatr-contact-carrying support through a .pawl and ratchet-wheel, and when as above described it is necessary for the support t'omove in the contrary direction relatively to the frame, this pawl and ratchet-wheel,'which are controlled by a separate electromagnet, act as ,a step bystep esca enient and allow the required inde-- pen en'tmotion to be imparted tothe sup-' port by means of, say, a weighted cord.

In the accompanying drawings, Figs. 1,

I 1, 1, and 1 are-four views illustrating 'of the movableplungers.

tion of part of the transmitting ap aratus. taken at rightangles to the viewin ig.-1,. and Fig. 5 is a dia diagrammatically: one construction of signaling apparatus according. to this invention.

Fig. 2 is an, elevation of a portion 'of the magazine-receiver. tail and on a larger scale'the construction Fig. 4 is an eleva= transmitting-contacts.

With'reference first to ram showing trainecarried four conducting-rings A'-. A,'A and A, at-

ceding row of plungersto their normal'posi- This movement is commu- Fig. 3 illustrates in de-' Fig. 1,-A is a transmitteFdisk, of insulating material, having tached to one side of it. These rings are permanent contactwith springs B, B B and B, and portions of the rings'project. through the insulatlng-disk A, forming segmental conductors, which according to the position of the disk make electrical connection with other contact-springs C C C C. The four contactsenable fifteen distinct signaling combinations to be used, and the disk A is provided with notches A and numbers carried upon a fixed support A and visible through holes in the disk, so that the disk, I

which is"rotatable,'may be readily placed in the right position to'give. any desired combination. Working in conjunction withthe transmitter-disk is a switch-lever D connected through a spring D ith a pivoted arm D, havinga proiection D which entersis closed'l. e., is "brought into 0 nnection with.contact-springs D. As wi be seen from Fig. 1*, when this switch is closed the springs B B B B, and consequently the rings A A A A, are brought into electrical connection with a transmitter-b attery E, one

one of thenotches A when the switch-lever pole of. which is permanently connected to one 'of the switchscontacts D A pointer F on the transmitter turns with the disk A and indicates by its positiorif'which of the fifteen combinations will be selected when the switch is. closed. As will be seen by reference to the other view of the switch-lever, (shown in Fig. 4 'of the drawings,) the notches A are beveleda-t one side, so that should the setting of the disk not'be quite accurate the projection-D may nevertheless enter when the switch isclosed andwill then itself bring about'the final adjustment of the disk A; A

' The magazine rece'iver is shown in Fig; 1 in longitudinal vertical section and in Fig. 1

in elevation looking in thedirection .of the arrow 1, Fig. 1*, -It comprisesa frame in the form of a drum G, rotatably mounted, by means of a long bearing G, upon a shaft G", supported u on "standards G Round the periphery o this frame are a number of groups of indicating members in the form of -plungers H, four in a'group, and arranged so 4 that they can'slide radially in and out of the frame G. The details of-construction of ger has been-pushed in. The function of .t-his catch H 1s, as will be hereinafter described, to retain the plunger H in its inward position against the action of a spring Huntil the signal re resented y the plunger has been announcer and canceled, i The movement of the plungers H rela-I tively to the frame G is brought about by elevation in Fig. 2.)

--port for spring-controlled plungers K, which gers K outward, andF felectromagnets 1,1, I, and P, which are fixed beneath theira'me G and are provided with pivoted armatures I, which when .the electromagnets are energized are lifted up by plungers 1? and caused to push in the plunge'rs H, which are opposite to them. 'lhese electromagnets I I l I are joined,respec tively, to the contacts CO O O by the conductors a, b, c, and d.

Mountedlupon asleev'e J on the shaft G is a segment-shaped member K. (Shown in This'ser'ves as a supcooperate with annunciator contacts K also carried upon the support K. 'The springs K normal-1y press the contact-plunas will be seen from the sectional view of he receiver in Fig. .1 there is a space between the-'plungers K and the inner ends of the indicat-ing-plungers 1'1 when the latter are in theirnorm-al position that is to say, when they are not depressed against the action of the springs H When one of the plungers' H is pushed inward, as shown at the to left-hand portion of' the sectional view 0' the magazine-receiver, its inner end comes into contact with the corresponding plunger K, "and the plunger- H being retained," as previously mentioned by the catch H t e a'nnunciatorplunger K is depressed against the action of i its spring K .andthe Contact K is closed,

nunciatqr, and the plungers, with their con .com'pleting a-circui't in an annunciator,.hereinafter described.

Although the support K, with its plungers and contacts, is structurally part of the receiver, it is functionally a portion of the an' ta'cts, are to be regarded as sections of. the

. annunciator'.

The support K is provided with a ratchetwheelL, and apallet M,.pivoted,a s at M, to a'portion of the side of the frame G, bears two pawls M and,M-"', which form an escapement controlling the motion of the wheel-L and the support K relatively to frame G and also constitute means for locking the support vices I l I I to the frame G when they are required to move together relatively to the selective de- The pallet M is joined by a link M to a lever M forming the armature of an electrom'agnet 'N, mounted: upon the side, of the frame G. This lever M is pivoted to theside of the frame, as at M, and its free 'end'is controlled by a spring M", which tends to keep the armature end of the lever M raised, as shown inelevation in Fig. 1, thus causing the pawl M to keep in engagement with the teeth of the. ratchetwheel L. Thus it will be seen that with the mechanism in this position the frame G and the annunciator' section support are locked and" would rotate together if the frame were driven in the direction of the a stop-pin O and is controlled by and I.

arrow 2 in Fi 1 Motion of the frame in this direction is -necessary to bring the groups of plungers H successively into cooperation with the selective elctroniagnets 'I I I I and is brought about in the following way: The frame G is providedwith pins G, corresponding in number to the rows of plungers H. Engaging with these pinsis a pawl O, pivotedto a weighted rod 0, slidin .in vertical guides O. This pawl is provi ed with a spring O. To the weighted rod'O is connected oneend of a lever O pivoted, as at O,and bearing at its other end the armature of an electromag-; net 0 One end of the winding of this electroinagnet O is joined by a conductor e to all the electromagnets I I I I and the other end is joined to the battery E, so that theelectromagnet O isenergized'whenever the switch D is closed, and'the consequent movement of the armature-lever O raises the weightedrod O, causing the pawl O to slip over one of the pins G. On the opening of the sending-circuitthe armature-lever O is released, the weighted rod O descends, and the pawl 0, now kept rigid by its stop 0 bearing against'the rod, engages with the pin G directly beneath it and drives the frame Gin the direction of the arrow 2, thus bringing the next set of. plungers H over thearina ture I ready for selective setting. To limit the movement of the frame G two pawls are provided. One, P, near." the top 'of' the frame, is controlled by a spring P and prevents any motio of the frame-in a direction opposite to that-of the arrow 2. P near. the lower portion of the frame, is

The other,

controlled by a spring P and forms part of lever, theother end of which rests againsta stop 0 on the rod O. Normally'i,

when the electromagnet O is not energizedthis pawl P controlled by its spring P occupies the positionshown in dotted lines in Fig. 1 and prevents any rotation of the frame Gin the direction of the arrow 2;' but when the rod 0 is raised, as previously de scribed, the stop-pin 0 causes the pawl P to move down out of engagement .with the. pin

'G, ,as shown in fulllines in the drawings.

As the rod 0 descends the pawl P risesand ultimately engages with the next pinG, so that the rotation of the frame is li r nited to an amount equal to the distance between two adjacent pins G. It is to beunders'tood' that as far as this part of the invention is concerned the essential feature is the production of relative motion between the groups of indicating members and the selective mechanism-43. e., between the groups of pluners H and the electromagnetsI, I, I, and. I 11 the construction shown in the drawings this is accomplished, as described, by causing the frame G carrvin the plungers to rotate relativelyto the iixe electromagnets I, I, I,

As previously mentioned, the pawl M by 1 When, however, the signals are to be passed its engagement with the teeth of the ratchet wheel L locks the support K to the frame Gr, so that the support moves with the frame in the direction of the arrow 2. a

For certain functions hereinafter more fully described it is necessary for the support K to move relatively to'the frame G. This independent movementof the support K the sleeve J. The electroma gnet X when to the other.

' engagementtakes place the weight shifts the wheel in the direction-of the arrow 3 slightly. The movement, however, is limited by the pawl M", which has now been brought down into the path of the teeth. On the release of 4 the armature of the electromagnet N the pawl M descends again and comes into engagement with the next tooth, so that the one complete movement of the-lever M down and up again allows the support.- K to rotate under the influence of the weighted cord R for an amount equal to one tooth-of the ratchet-wheel L. The number of teeth is equal to the number of ins G that is, to

the number of rowsof p ungers H.- Therefore the result of this independent movement of the support K is to bring the annunciatorplunger-s K, carried by the support, into opera-tive position from'one row of plungers H H It will be seen on reference to Fig. 2 and to the sectional view of the magazine-receiver in, Fig. 1 that the support K carries in br'ack-' ets K 'four fingers or wipers K These fingers are in the path of the tails of the catches frame K is brought about from a battery E,

which is joined through a key S at the receivmg-stationto slip-rings S These rings are'mounted upon a suitable support on the sleeve G and are connectedto the ends of the winding of the elect-romagnet M In the drawing the key Sis shown as a simple key and may be termed an announcing and canceling key, as its function is to bring about the rotation of the support 'K, and consequently the announcement and' cancellation in succession of the indications previously given at the receiving-station.

orat the same time as the closing of thetransmitter-switch D, so that the transmission of a previously-received signal from one receiving station to the next would auto receiving-station and also cause the indication at that station of the next stored signal.

As reviousl mentioned the positions .of the p lingers relatively to the frame G tionisrequired the plungers K and contacts ent rotation of the supportK used simp y for cancellation. have a separate annunciator-working in conjunction with the plungers K and contacts K and the annunciating arrangements will now be described.

Mounted upon the sleeve J are five sliprings T T T T T. T-he ring T is joined by a conductor f to the lower contact of all the four contact keys Ki, while the rings T T T T are joined severally to the upper contacts of those keys. Rubbing-contacts '1 are provided for all the rings, and the ring T is connected to a battery E, the other pole of which avindings of fourelectromagnets U"U? U U.

tromagnets are joined by conductors 71 'i, j,

with the rings'T, T T and T4, respectively.

\an armature bearing a rod niadeupof conducting and insulating parts; These rods are shown diagrammatically in Fig. l and are lettered U U, U ,.and U respectivel the insulating portions ofeach rod being indicated by the dark portions of the diagram. Adjacent to each rod are,rubbing-contacts hing-contacts joined to conductors markedwith the numbers 1 to L5, respectively, each of these conductors being joined bearing. a corresponding number. These electromagnets are joined, through a battery E to a. common return-conductor Z, connected to the rubbing-contact U in connection with the rod U It will be noticed that each of the rods U U, U and U is provided with a conducting makes contact with the particular conductorh i j k belonging to the. magnet circuit. through adjacent contact-pieces U These contactpieces, are shunted by resistances U, and theobject of the arrangement is to avoid waste of energy, so that a arge currentmay' be allowed to pass through; for ex'ample,the'

on from one receiving-station to another, the circuit of the battery E would be closed by themselves indicate the signal sent from the. transmitting-station, and if no other indica- K maybe dispensed'with and the inde end-- and k to the rubbing-contacts in connection U", and the rod U is provided with fifteen rubmatically cancel the indication at the first i It is, however, preferred to is joined by a conductor g to one 'pole of the The other ends of the windings of these elec- LOO Each of the electromagnets U U U H has to a separate annunciator electromagnet portion near its extremity, which when the- 1 armature is.-down ,that wis,-'unattracted. I

' ro'd 'U up the direct circuit is broken at U their respective conductors.

and the diminished current passing through the resistance U serves, to retain the armature in its raised position.

The operation of the a paratus is as fol lows: The transmitter-dish A is first turned until the pointer F,which moves with it, points to the number indicating the si nal required. For example, in the drawing the pointer indicates the numbr 13. In this position'it will be seen that t contact-springs C and C are in contact wi the conductingsegments of the rings A and A and that the ot er two springs C and C are not against The switch D is now momentarily closed, and conseuently current from the battery E flows t rough the conductors a and c to the electroma nets I and I, respectively. The armatures of these magnets are consequently raised and operate against the plungers H adjacent to them, which are shown in the sectional view of the receiverin Fig. 1 pressed inward by the armatures I. At the same time the electromagnet O, which is in series with the electroma netsI I I I, is energized and lifts the rod ,ready to shift on the frame G when it descends, a motion which takes place immediatelyafter the current ceases to flow through the electromagnet 0. As will be understood from the previous description, the displaced plungers H in due course cooperate with the annunciator-plungers K, carried on the support K,

and for clearness of description it is conven-J ient now to consider the upper portion of the receiver shown in section in Eigxl fof'the "drawings, where two of the plungers H,

which have been ,through some previous signal,'operated by the arma'tures of the electroma nets I- and I, are shown in cooperation with their respective annunciatorplungers K. These, it willbe seen,are depressed, and consequently their spring-contacts K are closed. 'Cur'rent therefore passes from the battery E through the ring T to the conelectromagnet U back to the battery E 'ductor f, where the circuit divides, part of'the current going through one contact K to the rlng T and thence by the conductor h to the while the other part flows through another contact K the ring T, conductor i, and electromagnet U back to the battery. Thus the magnets U U are energized and, as

shown in the diagram, attract their respective armature-rods U U. The result of this movement may be seen from that part of the diagram relating to the annuriciator. Current from-the battery-111?v flows throughith-e passing through the conducting portion of t e four rods LI U U U", out by the rubbing. contact into conductor 3, whence it'passes round the annunciator-magnet 3, which therefore attracts its armature, and back to the battery E". It will be readily seen that any of the other fourteen combinations could be effected in a similar manner. Suppose now the receiving-stationwishes to. cancel the signal just announced. The key S is closed, the

electromagnot N energized'from the battery E, and the support K rotated. The movement of the support'K withdraws the annunciator-plungers K from cooperation with the previous set, of plungers H, and consequentl the contacts K previously closed are opene the electromagnets U U? deenergized, and the annunciaton-armature 3 allowed to drop.

The same movement, however, will bring the annunc1ator-plu'ngers K into cooperation with the next set of plungers H, and should any of these be depressedthat is to say, should another signal have been storedsome one or more of the plungers K will be depressed-and another annunciati'on made.

As previously mentioned, the 1plungers H are mechanically replaced throug the action of the wiper-fingers K which by the motionof the support K are brou ht into contact with the retaining-catches.

The number of groups of plungers H on the receiver-frame G should always exceed the capacity of the line between the receivingstation and the sending-station, so that the support K is never required to make a com-,

plete revolution relatively to the frame. The' weighted cord R, operating thesupport K,

will then never require winding, for the 4 amount of cordlunwound by each independent movement of the frame for annuncia tion orcancellation is rewound by the move ment in the'opposite direction produced by each description.

It will be, ppreciated that the essential feature neces ry for the successiveannunciation of previously-stored signals is that relative motion should be'produced between the annunciator-sections and the indicating mem- Fursectionsthat is to sav, to the support K I by either of thetwo parts that coo erate in the relative movement between t e frame and the selective device. Thusin the construction illustrated the weighted cord is rnay be employed, and it may be wound up wound up by the frame G movin relatively a construction where the frame is stationarj the movement of the selective device can be to the electromagnets I, I, I, an I; but

utiliied to. wind up the weighted cord or otherwise store energy afterward used for causing the independent movement of the annunciatcr-secticns.

' transmitting apparatus.

It is within the present invention to employ upon a train adjustable contacts capa le of transmitting impulses to the receivingstatiun in like manne and in like order to that in which they are iransmitt'ed, as above described, by manual movementof' the Fig. of the drawings illustrates diagrammatically such an arrangement. Contacts IV are. laced on .the road-bed and cooperate with rushes or spring-contacts X, which are carried by the train and are under the control of the driver; In like :manner the circuitof the battery E may be closed automatically by atrain instead of being manually operated, and in this case a trainpassing a given point would by operating a treadle or in any other wellknown way cause the rotation of the support K, and consequently bring about the can- 'cellation of one description and the an'nunciation of'the descri tion next-in order;

The details of t e construction of-the va' rious parts of the apparatus may be altered;

without departing from the spirit of this inive devices a and vention. i

Although, as "aforesaid, this invention is described with reference to the transmission, storage, and repetition of signals to indicate descriptions or route of successive railway trams, 1t 1s apphcable with equal advantage to' the-transmission, storage, and repetition of other series of signals or records.

hat We claim as our invention and de-' sire to secure by Letters Patent, 3 1. In signaling apparatus the combination with a transmitter of a magazine-receiver mitted signals in the same sequence and individu'ality as that in which they were primarily despatched. v

2. In signaling apparatus the combination of a frame, successively-disposed groups of indicating members thereon, andfmeans o'peratlng on the groups 1n SHOOGSSIOII and see lectively on the indicating.- members of each group.-

3. In signaling appara tus the combination of a frame, successively-disposed groups of indicating members thereon, means for operating selectlvely uponthe indicatin 'members of each group and means whereby rela' I tive motion is fproduced between the selecta the groups of indicating m s ,1 -1- 4. In signaling apparatus the combination of a frame, successively dis osed groups of indicating members in a circ e thereon, a device foracting selectively upon the indicat ing members of each group, -and means'to produce relative circular motion between the frame and the selectivedevice.

an annunciator that exhibits the transtion is produced-between the selective devices and the groups of indicating members.

7. In slgnahng apparatus the combination of a frame, successivelydisposed groups of indicating members thereon, stationary. electromagnetic devices for operating selectively upon the indicating members of each group, and electromagnetic mechanism by which the frame is rotated to produce relative motion between the selective devices and the groups of indicating members.

of a, frame, success vely-disposed groups of indicating members thereon, traveling electromagnetic devices for'o era-ting selectively upon-the indicating mem ers of each group, andelectromagnetic mechanism by which the said devices are .m'ade to, travel to pro device and the groups of indicating members.

9; In signaling apparatus the combination of a'frame, sucessively-dispbsedgroups of indicating mem Y rs thereon, nieans operating on the groups in succession and selectively on the indicating members of each group, an annuneiator having. sections adaptof each group, and means by which relative dicati'ng members, and the annunciator-sections.

10. In signaling tion ofa frame, successivelj disposed groups of 'indicating members thereon, stationary electromagnetic devices foroperating selectively 'up'onrthe indicating members of each grou electromagnetic mechanism by which the -fi 'ame is rotated to. produce relative motion between the selective device and the grou s of indicating members, an annunciator iaving' sections ada ted to cooperate and means to move. the annunciatonsections from group to group of bers.,

11. In signaling apparatus the combination of a frame successively-disposed groups of indicating member's thereon. means operively on the int icating members of each group,.andn1eans for thereafter operating on i the groups to-restore theindicating members i to their normal condition.

magnetic mechanism by who relative mo- 8. In signaling apparatus the combin'ation duce' relative motion between the selective ed to cooperate with the indicating members motion is produced between the groups of in-' apparatus the combina- I with the indicating mem ers'of each group, i

the indicating mem-,

ating on the grou s in succession and select- "12. In signaling apparatus the combinetion of a frame, successively-disposed'grou ps of indicating members thereon, stationary electromagnetic devices'for operating selectively upon the indicating 'membersof each group, electromagnetic mechanism by which I the frame is rotated to produce relative moalotion between the selective device and the groups of indicating members, and means for restoring the indicating members to their normal condition. a

13. In signaling apparatus the combination of a frame, successively-disposed groups of,indicating members thereon, stationary electromagnetic devices-for moving selectively the indicating members of eachgroup in relation to the frame, electromagnetic mechanism by which the frame is rotated to produce relative motion between the selective device and theg'roups of indicating members, and means. for replacing the members relatively to the frame. f

1-4; In signaling apparatus the combination of a frame, successively-disposed groups.

of loaded'indicating members thereon, means a for moving selectively the indicating mem bers of,each group'in relation to the frame, s ring-operated catches .for retaining 'the in? icating members in their selected positions and means for disengaging the catches from the members to permit them to return to 1 their normal position.

, 15. In 'signaling apparatus the combination of a frame, successively-disposed groups "of indicating members thereon, means for operating selectively upon the indicating members 0 each group and weight-actuated electromagnetically-controlled step-by-stepdriv ing mechanism whereby relative motion is prerluced' between the selective devices and the groups of indicating members.

16. In signaling apparatus the combination of a frame, successively-disposed groups of indicating members there'on, means oper ating on the grou s in succession and selectively on the in icating members ofreach' group, an annunciator having sectionsadapted to cooperate with the indicatingmembers of each grou weight-actuated mechanism by which re ative motion is produced between the groups of indicating members. and

the annunciator-sections and an electromagneticescapement for controlling such mo tion.'

17-. In signaling apparatus the combination of a frame, successively-disposed groups ofindicatingmembersi"thereon, means operating on thegrou s in succession and selectively. ;on the in icating members of each group, weight-actuated electromagnetically= controlled step-by-fstep driving mechanism whereby relative motion is produced between the selective 'devices and the-groups of indicating members, an annunciator having sections adapted to cooperate with the indicating members of each group, weightactuat'ed mechanism by which relative motion is produced between the groups of indi cating members and the annunciator-sections and anelectromagnetic escapement for controlling such motion.

18 In signaling apparatus the combination of a frame, successively-disposed groups of indicating members thereon, stationary electromagnetic devices for operating selectivelyupon the indicating members of each group, weightractuated electromagneticallycontrolled step-by-step driving mechanism by which the frame ISIOlDflbBCl to produce relativemotion between theselective devices and the groups of indicating members, an annunciator having sections adapted to cooperate with the indicating members of each group, weight-actuated mechanism by which relative motion is produced between the groups of indicating members and the annunciator-sections and an electromagnetic escapement for controlling such motion.

.19. In signaling apparatus the combination of a frame, successively-disposed groups of indicating members in a circle thereon, a device for acting selectively upon the indicating members of each group,.an annunciator having sections adapted to cooperate with t'he indicating members of each group, means to produce-reiative circular motion between the frame and the selective device, means for locking together and unlocking the frame and the annunciator-sections and means by which relative angular motion can be produced 'betwe the groups of indicating members and he annunciator-sections,

- .20. In signaling apparatus the combination of a frame, successively-disposed groups of indicating members in ,a circle thereon,,a device for acting selectively upon the indicating members of each group, an annunciator having sections adapted to cooperate with the indicating members of each group, means to produce relative circular motion between the frame and the selective device, means for locking together and unlockingthe frame and the annunciator-sections and a tension driving device operatively connected with the annunciator-sections and wound up by one of the two arts thatcooperate in the production-of tiie relative circular motion aforesaid.

21.- In [signaling apparatus the combination of a frame, successively-disposed groups of indicating members thereon, stationary electromagnetic devices for operating selectively upon the indicating members of eachv group, an annunciator having sections adapted to cooperate with the indicating members of each group, driving mechanism by which the frame is rotated to produce relative mo-' tion between the selective devices and the groups of indicating members, a support for the annunciator-sections, ratchet-teeth on pawl from the ratchet-teeth to allow such I of each group,

group, an annunciator havin 'mechanism by such support, a spring-controlled pawl pi'voted to the frame and engaging withsaid teeth when the frame is moved by its driving mechanism, a weight tending to rotate the support and the annunciator-sections in a direction contrary to the motion of theframe and an electromagnet to disengagethe motion to take place. 2 In signaling apparatus the combinaof indicating members thereon, stationary electromagnetic devices for 0 erating selectively upon the indicating -mbers of each sections adapt: ed to cooperate with the indicating members weight-actuated electromagnetically-co'ntrolled step-by-step driving which the frame is rotated to two subscribing Witnesses.

produce relative motion between the select:

e annunciator= tending to-rotate, the'support and the a'nnuns of indicating ciator-sections in adirectio'n-contrary to the motion of the frame and an electromagnet to disengage the pawl from the ratchetteeth to allow such motion to take place.

In testimony whereofwe have signed our names to this pecificatio'nin the presence of H AROLI) GILBERT BROWN. 1 ERNESTDE MERINDOL MALAN.

Witnesses.

HARRY B. BRIDGE, ARoHD. J. FRENCH.

25 L is moved by its drivingsmechanism, a weight

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