US603711A

US603711A - Permutation-pad lock

Info

Publication number: US603711A
Authority: US
Publication date: 1898-05-10
Anticipated expiration: 1915-05-10

Description

(No Model.)

J. A. L. SNYDER.

PERMUTATION PADLOCK.

No. 603,711. Patented May 10,1898.

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JOHN ANTES LATROBE` SNYDERQOF SOMIS, CALIFORNIA.

PERMVUTATloN-PADLOCK.

SPECIFICATION forming part kof Letters Patent No. 603,711, dated May 10, 1898.

Application filed May 28,1897.

To a/ZZ whom t may concern:

Be it known that I, JOHN ANTES LATROBE SNYDER, a citizen of the United States, residing near the town of Somis, in the county of Ventura and State of California, have in- Vented a new and useful Combination Bicy-` cle-Padlock, of which the following is a speciiication.

My invention relates to combination-locks, and particularly to padlocks designed for use as bicycle-locks, and has for its object to provide a keyless lock involving a simple, inexpensive, and efficient construction and arrangement of parts, whereby the same may -be manipulated Without the aid of light, and, furthermore, to provide a lock of the class named wherein the combinations may be readily and efficiently changed.

Further objects and advantages of this invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings, Figure 1 is a perspective View of a lock constructed in accordance with my invention. y Fig. 2 is a side View with the contiguous side plate omitted. Fig. 3 is a vtransverse sectional view on the plane indicated by the line c :n of Fig. 2. Fig. 4 is a vertical longitudinal section taken in the plane of the shackle.

section taken in the plane of the check-latch.

Fig. 6 is a detail View in perspective of one of the tumblers or locking-pins;

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

Tho body portion 1 of tho look embodying' my invention consists of a block preferably provided with a central longitudinal slot orr vopening 2, intersected by a plurality of tn m- Fig. 5 is a vertical transverse serai No. esatto. (No model.)

These face-plates are preferably fitted to slide lin place upon the body portion of the lockcasing, the same having'l cross-sectionallydovetailed ways to engage longitudinal crosssectionally-dovetailed guides 7 on the opposite side faces of the block'. Long and short arms 8 and 9 of the shackle are fitted in parallel shackle-arm guides or sockets 10 and 11, formed parallel with the longitudinal opening 2 of the block, and are shouldered, as shown at 12, to bear upon the anges at the upper ends of the face-plates, and thus lock said face-plates against displacement even should the securing devices thereof be removed,while the shackle is locked in its closed or normal position.

Fitted in the transverse tumbler orlocking- Y pin seats or guides 3 are the tumblers or locking-pins 13, of a length greater than the width of the lock-casing, y and fitted between the walls of the longitudinal slot ork opening 2 with return springs 14, terminally bearing against said walls or other xed parts of the lock-casing and preferably coiled upon reduced cross-sectionally-round portions of the tumblers or locking-pins, said tumblers or locking-pins being shouldered, as at 15, to bear against the extremities of the returnsprings and compress the latter as the tumblers or pins are moved in one direction or y the other by terminally-applied manualpressure.Y

The shackle-legs are recessed or cut away in the planes of the tumblers or locking-pins to form tumbler-seats 16, and the tumblers or locking-pins are similarly cut away or recessed at intervals corresponding with4 thoseI between the tumbler-leg guides or sockets to form main shackle-leg seats 17. While said main shackle-leg seats are spaced apart at an interval corresponding with that betweeny the shackle-leg guides or sockets, the actuatingsprings of the tumblers or locking-pins normally and yieldingly maintain said seats out of alinement with-the sockets, and hence when the shackle is in its normal position it is locked by the engagement of the unrecessed or continuous portions of the tumblers or locking-pins with the tumbler-seats in the legs thereof. Hence to release the shackle the tumblers 0r locking-pins having shackle- IOO leg seats out of alinement with the tumblerleg guides or sockets must be terminally pressed in one direction or the other (according to the position of the shackle-leg seats with relation to the shackle-leg guides) to cause the alinement of the seats with the guides. In other Words, when the main shackle-leg seats of the tumblers are alined with the shackle-leg guides the shackle-legs are free to be inserted and removed; but otherwise the tumblers engage the tumblerseats of the shackle-legs, and thus lock the shackle in its closed position.

In addition to the above-described main shackle-leg seats the tumblers are provided with auxiliary shackle-leg seats 18, which are not only spaced apart at an interval correspending with that between the shackle-leg guides, but are normally held in registration with said guides by the actuating-springs of the tumblers. These main and auxiliary shackle-leg seats are arranged in opposite sides of the tumblers, and hence when the tumblers are arranged in the casing to dispose those sides having the main shackle-leg seats contiguous to the plane of the shackle the shackle will be engaged by said tumblers and locked thereby, Whereas when a tumbler is disposed with that side having the auxiliaryshackle-leg seats toward or contiguous to the plane of the shackle the latter will not be engaged by the tumbler, but the shackle will be free, so far as said particular tumbler is concerned, to be inserted and removed. Therefore as the tumblers are removable from their guides in the casing and are reversible to arrange either of their sides contiguous to the plane of the shackle either one, two, or more tumblers may be disposed with their main shackle-leg seats in the plane of the shackle to form a certain combination, while t-he remaining tumblers may be disposed with their auxiliary shackle-leg seats in the plane of the shackle to otter no obstacle to the insertion and removal of the shackle. By this means the tumblers may be reversed and arranged to require the manipulation of any desired combination of the several tumblers to release the shackle.

As above indicated, I prefer in practice to arrange a double set of tumblers disposed, respectively, upon opposite sides of the plane of the shackle not only to engage the shackle at opposite sides, but to increase the variety of the combinations to which the lock may be adjusted, and hence to increase the difficulty of opening the lock when the combination is not known; but it is obvious that in order to still further simplify the construction of the mechanism the lock may be provided with only one set of tumblers arranged to engage the shackle at one side.

The short leg of the shackle, as illustrated in the drawings, is provided with only one tumbler-seat, and fitted in the shackle-leg guide or socket in alinement with this short leg of the shackle is a check-latch 19, provided with an actuating-spring 20, which is interposed between its lower extremity and the closed end of the guide or socket and also provided with annular tumbler seats 21, which when the latch is depressed against the tension of its actuating-spring are alinedwith the tumbler-guides, and hence are adapted to allow free reciprocatory movement of the tumblers. When, therefore, the operative tumblers (by which I mean those tumblers which are so arranged in their guides as to normally engage the tumbler-seats of the shackle-legs and to require terminal pressure in order to aline the main shackle-leg seats with the shackle guides or sockets) are in their normal positions,with the main shackleleg seats out of registration with the shackleleg guides, the check-latch is held depressed against the tension of its actuating-spring to arrange its annular seats in the planes-of the tumblers; but when said operative tumblers are manually actuated to aline the main shackle-leg seats with the shackle-leg guides the check-latch will be advanced by means of its actuating-spring, and hence said operative tumblers will be temporarily locked in a position to release the shackle. The upper end of this check-latch is arranged in the path of the short leg of the shackle and is adapted to be depressed against the tension of its actuating-spring when the shackle is introduced and pushed to its place. Therefore While the operative tumblers are temporarily locked in their releasing position by the engagement with the main shackle-leg seats of the checklatch and remain thus locked While the shackle is disengaged or is open the reinsertion of the shackle and the subsequent engagement of its short leg with the end of the check-latch will disengage the latter from the operative tumblers, and hence willl allow said tumblers to resume their. normal positions under the tension of their actuatingsprings and hence lock the shackle in place.

In the construction illustrated the tumblers are cross-sectionally square or angular, and the angles thereof constitute the means whereby the tumblers are heldy from rotation or other displacement in their guides, while allowing the lateral removal thereof when it is desired to change the combination by reversing one or more of the tumblers; also, it will be seen that the tumblers are so constructed as to be turned end for end to either facilitate or make difficult the operation of properly pressing the operative tumblers in order to release the shackle.

In manipulating the lock to release the shackle the operative tumblers are manually pressed each in its proper direction and simultaneously to cause the registration of the main shackle leg seats thereof with the shackle-leg guides, and when said simultaneous registration is accomplished the checklatch, actuated by its spring, will be advanced to engage said shackle-leg seats, and thus maintain the operative tumblers in their ad- IOS IIO

. therein with the shackle-leg guides.

j usted or set positions during the removal and subsequent replacement of the shackle, and the contact with the endof the check-latch of the extremity of the short shackle-leg will displace the check-latch against the tensiony of its actuating-spring and allow the operative tumblers to be returned to their normal positions under the tension of their actuatingsprings to rengage the tumblers with the tumbler-seats in the shackle-legs. The extension of the ends of the tumblers beyond the contiguous Walls or exterior surfaces of the casing is preferably such as to require said ends to be pushed inwardly approximately flush with the said surfaces of the casingin order to aline the main shackle-leg seats In other Words, the main shackle-leg seats are offset from the lines of the shackle-leg guides (when said tumblers are in their normal positions) a distance equal to the projection of the extremities of the tumblers beyondv the contigand yieldingly held at intermediate points in their paths of movement, said tumblers having shackle-leg seats for registration with the shackle-leg guide,and being movable in either direction from their intermediate points of rest, substantially as specied.

2. A lock having shackle-leg-engaging tumblers reciprocably mounted and yieldingly held in their normal positions at intermediate points in their paths of movement, whereby each tumbler is movable in either direction from its point of rest, substantially as specied.

blers reciprocably mounted in guides and capable of end-for-end reversal, said tumblers 3. A lock having shackle-leg-en gagin g tum-N guides, and tumblers mounted for reciprocation in their guides, and exceeding the same in length, for exposure at both ends thereof, and yieldingly held at intermediate points 'of their paths of movement, said tumblers having shackle-leg seats for registration with the shackle-leg guide, substantially as speciiied.

6. A lock having its casing provided With a shackle-leg guide and intersecting tumblerguides, a shackle-leg having tumbler-seats for registration With the tumbler-guides, and reciprocable tumblers fitted in their guides and transversely reversible to arrange different sides thereof contiguous to the plane of the shackle-leg, said tumblers being provided in different sides with shackle-leg seats for registration With the shackle-leg guide, substantially as speciiied.

7. A lock having transversely-reversible shackle-leg-engaging tumblers mounted for endwise reciprocation, and .provided in different sides With shackle-leg seats spaced at different distances from the extremities of the tumblers, said tumblers being yieldingly held at intermediate points of their paths of movement, substantially as specified.

8. A lock having itscasing provided With open-sided tumbler-guides, movable means for closing the open sides of the guides, and cross-sectionally angular shackle engaging tumblers reciprocably mounted in the guides and transversely reversible to arrange different sides thereof in operative position, said tumblers being yieldingly held in their normal positions, and being provided in different sides With shackle-leg seats arranged in different relative positions, substantially as specified.

9. A lock having its casing provided with open-sided tumbler-seats, and an intersecting slot or longitudinal opening, and shackle-legengaging tumblers reciprocably mounted in said guides and carrying coiled springs in terminal engagement With spaced shoulders on the tumblers, and arranged terminally contiguous to the Walls of said slot or longitudinal opening for bearing thereon, whereby the tumblers are movable in opposite directions from their points of rest, said tumblers being provided with shackle-leg seats, substantially as speciiied.

10. A lock having its casing provided With shackle-leg guides interseeted by transverse tumbler-guides, a shackle having its legs fitted in the shackle-leg guides and provided With tumbler-seats for registration With tumbler-guides, tumblers reciprocablyv mounted in the tumbler guides and provided With shackle-leg seats for registration with the shackle-leg guides, and yieldingly held out of registration therewith, and a check-latch reciprocably mounted in one of the shackleleg guides in the path of a shackle-leg, provided With seats for registration with the tum- IOO IIO

registration With the tumbler-guides, springactuated tumblers reciprocably fitted in the tumbler-guides and having shackle-leg seats -for registration With the shackle-leg guides, a reciprocable check-latch ittedin the shackleleg guide in which the short leg of the shackle is arranged, and having tumbler-seats for registration With the tumbler-guides, and an actuating-spring for the check-latch to maintain the latter terminally in the path of the short shackle-leg with its seats out ofregistration with the tumbler-guides, substantially as specified.

JOHN ANTES LATROBE SNYDER.

Witnesses:

EDWARD M. SNYDER, C. B. GREENWELL.