US2508302A - Portable clamp lock - Google Patents

Description

May 16, 1950 T. B. STUE PORTABLE CLAMP LOCK 2 Sheets-Sheet 1 Filed March 26, 1945 III/U 121F601 'T ,Stu/e May 16, 1950 T. B. STUE 2,508,302

PORTABLE CLAMP LOCK Filed March 26, 1&6 2 Sheets-Sheet 2 Inn GIL-Z301 i atented May 16, 1950 UNITED STATES EMT OF FICE.

PORTABLE cLAMP' Look Tryggve Bob Stue,- Oslo; Norway Application March 26, 1946; serial No. 657,126 In Sweden May 24-, 1944* 4-Claims.

The invention relates 'to -a portable: clamp lock which may be moved fi orn one place to another and be applied at the place where it isto be used; The lock: according. t the invention may, however, occasionally be mounted in a stationary position.

The lock according to theinvention is of the type which is provided with an extended" locking element, for instancein the shapeof'a barrnem b'er or a steel band, which locking element may be pushed or pulled through a guide in the lock casing. The locking element is provided with notches, holes or the like}. which cooperate with a latch member" insuch a manner that the locking element, when the lock is locked, can: be moved in one direction only;

Theprimaryobject of the invention is to produce a lock which is: adaptable for use within a larger range than the known locks of the said type.

To this end and according toan important feature of the invention the locking element is mounted turnably about its longitudinal axis and: provided with a plurality of closely spaced grooves, each extending around the circumference of the element. As aresult, it is possible during the locki'ng'to tiirnthe locking element into the position best suited for the object which is to be locked. This is espe'ciallyof importance when the locking element at its one" end" is provided with a hoop or hook shaped portion; intended to be brought into engagement with'o'ne of the two objects which are to be: locked" togethert The two objects here referred to may for instance,- consist of a stationary object, such as a railing, aniron hook' fastened to a house wall, a container or the like, while the other object may be a bicycle; achair-sled, a perambulator or the like. The objectsmay; however, also be two'loose objects, for instance,- a pair of skis or two wheels-of a-carriage. Itis-further possible that the object afterhavingbeenlocked-may be turned around; which is at timesdesirable.

The possibilities of using; the-lock may be further increased according. to another feature of the invention by providing the lock casing with two or more guides for two or more locking elements.

According to a further important feature of the invention, thezlocking element is constructed in the form of achain.

The" invention comprises also -lock mechanisms which are especially suited for the locking elements employed according to the invention; I

lurtherfeatures'and advantages of the in ventior'i will appear from the following descriptionwith reference to the drawings. These serve to illustratesome embodiments of the invention which, however, is not limited to these special e frlbodim'eints but comprises everything covered by the claims.

In the drawing? Fig. 1 is a perspective View of an embodiment of a lock according to-the invention.

Fig. 2 is a longitudinal section on the line II-II in Fig. 1.

Figs. 3 and 4 are sections on the line III --III in Fig. 2, with the latch member in two-different positions.

Fig. 5 is'a section-toe. larger scale on the line V -V in Fig. 2.

Fig. 6 is an elevational' detail view.

Fig. 7 is a section on the line VII--VII-' in Fig. 8; oi another embodiment of the lock mechanism.

Fig; 8 is: a section on the line VIII--VIII in Fig. '7.

Fig. 9i's" a vertical section of another embodiment of a" look according to the invention;

Fig. 10 is a plan view to Fig. 9-.

Fig. 11 is atop plan detail of a plate in the lock casing; and

Fig. 12 isa top plan detail of a spring control lever in the" lock casing.

The lock shown in Figs. 1-6 comprises a lock casing I, which in plan view has approximately the shape'of an I. The-lock casing is provided With four throiigh-going boresor guides 2; 3;. 4, 5; for extended locking elements. In- Fig; 1 two such: locking elements S and dare shown. The locking element 6, which isplaced in the guide 4 is at itsone end provided with a hookshaped hoop'li intended to'be hoohed around an object or a portion of anobject which is to be locked fast.

Thestraight portion ofthelocking. element isprovided with slots or grooves 8; whichextend along the circumferenceand are equally spaced.

Thelockin'gmember 9 is -in a similar way provided. with: a hookshaped portion It; which at its free" end is providedwith anaxial bore' M Thestraight portion ofthe locking element is in a similar way as the elemcnt-ii provided with slotsor grooves H.

The lock is further provided-with a cylinder lock mechanism. This comprises-a cylinder 13 of aknown construction: which cooperates with tumblers l4. A-springiniiuencedpin l5 which engages in a circumferentialgroove in the cylinder preventsr-the'same from-being displaced in anaxial direction. At the end of the cylinder there is a member I6 which is integral with or rigidly connected with the cylinder [3. The member I6 carries a laterally projecting nose II which in the locked position of the lock engages in one of the grooves I2 on the locking element 9 and thereby prevents any axial displacement of the latter (see Fig. 3). I8 designates a member which is mounted turnably in a recess in the member I5 and is provided with an outwardly projecting nose I9. In the locked position of the look as shown in Fig. 3 the member I8 is held by a spring 25 in such a position that the nose I9 engages with one of the grooves 8 on the looking element 5. The recess in the member I6 is, however, formed in such a manner that the member l8 against the influence of the spring 20 may be turned downwards a certain angle from the position shown in Fig. 3, so that the locking element 5 may be pushed downwards, but not be pulled up again.

The tumblers I4 prevent in the usual manner unintended turning of the cylinder It. By means of a key, which when inserted causes raising of the tumblers, the cylinder may be turned to the position shown in Fig. 4. In this position none of the noses II and I9 projects into the guides 4 and 5, and the locking elements 5 and 9, which are not shown in Fig. 4, may in this position of the cylinder be moved freely up and down.

The operation of the lock according to the embodiment described is as follows:

While the cylinder is in the position shown in Fig. 4, the locking elements 5 and 9 are pulled so far apart that the hooks I and It may be hooked around two parts which are to be locked together. It is here of great advantage that the locking elements according to the invention are freely turnable, so that the hoops I and It may assume the desired angular position relative to each other best suited to the parts which are to be locked together.

The cylinder is now turned back into locking position and the key is removed. The locking element 9 is now prevented from axial displacement but may still be turned freely. The locking element 5 may be pushed in (down in Figs. 1 and 3), the nose I!) thereby being forced downwards against the influence of the spring 25. When the parts which are to be locked together are tightened against each other they cannot be released from each other except by means of the key belonging to the cylinder lock. The locking element 6 cannot be pulled up because the member I8 cannot be swung further back than to the position shown in Fig. 3.

The different possibilities for using the lock are further to be described in detail in the following.

In the embodiment shown in Figs. 1-5 there are in addition to the guides 4 and 5 two other through-going guides 2 and 3. These are especially intended for use'in the case where instead of bar shaped locking elements 5 and 9, locking elements in the form of link chains are to be used, as will be described hereinafter. Such a link chain may then be passed alternately around an object which is to be locked fast and one of the guides in the lock.

In Figs. '7 and 8 there is shown a somewhat modified embodiment of a cylinder lock mechanism applied to a lock according to the invention. In these figures 5n designates the lock casing, 5| a through-going bore in the same, and 52 the cylinder in a cylinder lock of otherwise ordinary construction. Between the cylinder 52 and the bore 5| is located a bore 53. In the latter a pin In the latter a recess 5'I is provided, into which the pin 56 may be pressed when the cylinder 52, from the position shown in Fig. 7, is turned in counter-clockwise direction. When the pin 55 is at the bottom of the recess all the pin 5 may be pushed back against the influence of the spring 55, so as to permit of displacement of the locking element situated in the bore 5|.

When the lock is in locked position, as shown in Fig. 7, the pin 54 can not be pushed back and the locking element is locked fast.

The lock shown in Figs. '7 and 8 is provided with two through-going bores for locking elements, and the cylinder 52 is therefore in addition to the recess 5'! provided with another recess 58 which acts in the same way. 59 and 60 are holes for the free end of the locking hoop.

As will be realized the lock may be constructed appreciably simpler than shown in Figs. 1-6. Firstly the guides 2 and 3 may be dispensed with. Secondly, instead of a turnable and displaceable hoop Iii one may use a hoop, hook, screw or the like which is fixedly or eventually turnably connected with the lock casing.

A few simpler embodiments of a lock according to the invention are shown in the following figures.

In Figs. 9, l0 and 11 there is shown embodiment of a lock according to the invention with only two through-going guides. In this embodiment a lock mechanism of the ordinary type for padlocks is used instead of a cylinder look. In these figures SI! designates a lock casing provided with two parallel through-going bores 3! and 32. 33 is an extended locking element in the form of a ball chain. This chain is at its one end provided with a head 36 in the shape of a ring, ball or the like, with lar er diameter than the bore 32. At its other end the chain is provided with a needle shaped pin 35 which serves to facilitate the passing of the chain through the bores. Between each ball slots or grooves 35 are formed similar to the slots 8 and I2 in the locking elements 6 and 9.

3i designates a lever which is turnably mounted on a pin 38 provided in the lock casing. A spring 39 tends to turn the lever 31 to the position indicated by dotted lines in Fig. 9. The other end 40 of the spring is passed through a hole M in a bar or plate M, which is displaceably mounted in the lock casing. In the position shown in Fig. 9 the lever 3'! as well as the bar 42 are in engagement with the link chain. The bar 42 is hereby mounted in such a way that it can neither be moved upwards nor downwards, so that the locking element mounted in the bore 32 is completely prevented from axial displacement. The lever 31 may, however, be turned upwards against the influence of the spring 39.

A latch member 43 which constitutes a part of an ordinary lock mechanism prevents, in the position shown in Fig. 9, return displacement of the bar 32. At the same time the upper end of the member 43 prevents that the lever 31 may be turned downwards so as to be disengaged from the locking element situated in the bore 3!. On the other hand, the lever 37 may be swung upwards against the influence of the spring 39.

The operation of the loci; according to this embodiment is as follows:

Return movement of the latch member 3 to the position shown in dotted lines is caused. by means of a key. lhe lock chain is now -ec and may be pulled. out of the bores 23% 32. This is of importance in case it is desired to exchange the lock chain with anothe: loci; chain which is longer or shorter, or with a bar shaped locking element, for instance, similar to those shown in 1 or Fig. 4.

It is, however, assumed that the lock chain shown in. Fig. 9 is to be used. In such case the same is only pulled out of the bore 3i and is thereupon placed around the object or objects which are to be locked. Thereupon the point 35 is inserted through the bore, the latch member 43 is moved by means of a key to the position shown in full lines in Fig. 7, and the lock chain is tightened. This is permitted by swinging the lever 3? upwards against the influence of the spring 39. In any position corresponding to the adjusted tightening, the chain is however locked fast so that it can not be pulled back, because the latch member (is prevents the lever 31 from being pulled downwards below the position shown in full lines in Fig. 7.

It is believed in View of the foregoing description that a further detailed. description of the operation of the invention is unnecessary.

Likewise it is believed that the advantages of the invention will be readily apparent.

Having thus fully described the invention what is claimed and desired to be secured by Letters Patent is:

1. Lock comprising a casing with two bores extending therethrough, a first lock element extending into one if said bores and being longitudinally slidable and rotatable therein, a, second look element extending into the other of said bores and being longitudinally slidable therein, said first lock element having a number of narrowly spaced grooves each extending around the entire circumference thereof, and a locking mechanism within the casing including two latches and a key controlled latch operating member common to both latches, one of said latches being engageable in the spaced. grooves and operable to lock the first loci: element movement in one direction be 1g yield ciy mounted to acccinmoda movement of rst lock element in the oppcs direction, e other latch being loci; element against either direction.

1g with two bores exiocl; element exbeing rotatable a second look element into ti.. her of said bores and being rotatable and axially displaceable therein, both of said lock ele' .its being adapted to be locked in adjusted a position, a single locking mechanism inc id two latches oper able by a single he to k a d unlock said lock elements, one of late being a one way acting snap-Batch, the other being a two way acting retaining latch.

3. Lock as claimed in claim 2 wherein said looking mechanism includes a ider and a spring, the snap-latch being adapted to be turned a certain angle about the axis of the cylinder against the action of said sping, so as to accommodate movement of the related lock element in one direction but not in the opposite direction.

l. Lock as claimed in claim 2 wherein said look-- ing mechanism includes a longitudinally shiftable member adapted to lock said latches simultaneously in operative position.

TRYGGVE BOB STUE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS longitudinal mov 2. Loci: comprisin, a tending there e Number Name Date 507,948 Waine Oct. 31, 1893 1,072,559 Bacon Sept. 9, 1913 1,079,655 Lissner Nov. 25, 1913 1,120,117 Anderson et a1 Dec. 8, 1914 1,395,970 Nidermaier Nov. 1, 1921 FOREIGN PATENTS Number Country Date 23,267 Great Britain Oct. 28, 1904

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