US176759A - Improvement in padlocks - Google Patents

Description

"F: W. lscHULTzE s. LIE. smnE'L.

PADL'OC-K. N0.176,759. Patented May 1.1876.

FIGB FIGS l @man y l Mmm maf mm. v Mw I mamey 'N-PETERS.FHOTU-LITHOGRAPHEFL WASHINGTON. D. C.

UNITED STATES PATENT OEEIGE.

FREDERICK W. SOHULTZE AND LOUIS H. SVEIDEL, OF PHILADELPHIA, PA.

IMPROVEMENT 1N PApLocKs.

Specification forming part of Letters Patent No. 176,759, dated May 2, 1876; application tiled January 15, 1876.'

To all whom it may concern:

Be it known that we, FREDERICK W. SGHULTZE and LOUIS H. SEIDEL, ofthe city and county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Double-Acting Tumbler- Locks, of which the following is a speciiication, reference being had to the accompanying drawings. Y

We have any desirable number of tumblers hung on a center pin of the case. These tumblers have, respectively, projections of different lengths on one arm, which connect with a shoulder of the shackle when the latter is swung into its closed position. They also have on another arm a pointed escape projection. These points of one tumbler are of the same distance apart as in all the other tumblers,

Aand the outer point of the shoulder of the shackle and another point of the same are of the saine distance apart, so that when the locking projections of the tumblers are brought into such position as to admit of the lockingpoint of the shackle escaping them for the latter to swing into its unlocked position, the v other pointv of the .shackle will also escape the points of. the Alother arms of the tumblers The bits of the key are so formed in relation to the points of their contact with the tumblers as to bring the locking-points and the escape-points, respectively, of the tumblers in range when the tumblers are brought to their unlocking position.

111 theaccompanying drawings, Figure 1 is a side view of the lock, with the cap-plate removed, to show the construction and arrangement ofthe interior.. Fig. 2 is a cross-section, at the line .fr m of Fig. l, With the cap-plate B in connection. Figs. 3, 4, 5, 6, and 7, are i'ace views of the tumblers. Figs. S and 9 are a face and edge view, respectively, oi' the lever I. Figs. 10'and 11 are like views ofthe key H.

Like letters of reference in all the figure indicate the same parts.

A is the case of the lock, and B the capplate. C is the shackle, which is hung on the pin a, and D, D1, D2, D3, and D4 are tumblers, which are hung on the pin b in the center of the case A. The shackle has a` shoulder, d, with which the projections e of the arms 1 ofthe tumblers connect to hold the shackle in its locked position. The projections c are of di'erent lengths, each varying from all the others from the tumbler D to the tumbler D4. The shackle has an escapement-point, g, and the tumblers an escapement-point, h, ot the arm 2. 'Ihesey points of all the tumblers are equidistant from the projection c of the arm 1, so that when the tumblers are brought into the unlocking position the point g of the shackle will escape all of them. The bits t of the key H vary in length corresponding, respectively, to the varying lengths of the projections e of the arms l of the tumblers, and the parts of the arms 2 of the same, against which the bits bear,V

being constructed accordingly. When the key is pushed inward through the key-hole j of the case A, until the stops k 7c come against thelatter, the lookin g projections of the tum- 4 blers are all freed from the locking-shoulder of the shackle, and the escapement-points heilig equidistant from the locking projections of all the tumblers, the point g ofthe shackle escapes them all, and thus allows the shackle to be swung into its unlocked position. Iis a lever, which, by the action of the spring J, automatically closes the key-holo for keeping out the dirt, and to make the lock more difficult to be picked by obstructing the movement about of a picking instrument. It also serves to retain the key in its place until the shackle is again brought into its locking position. The key is then withdrawn. The springs K, which engage with the shackle C, as seen in Fig. l, serve to close it when the key is withdrawn. By means ot' the escape-points of the arms 2 of the tumblers a Very slight difference in length would prevent the lock being opened by another key that had the slightest error in the length of its bits, because such variation from the right bit would cause a lapping of the escape-points, and thereby prevent the unlocking ofthe shackle.

We claim as our invention- The double-acting tumblers, having locking projections c of different lengths and escapement-points h, in combination with the shackle C, having upon its heel a locking-shoulder, d, and escapemcnt-point g, substantially as and for the purpose set forth.

FREDERICK W. SOHULTZE. LOUIS H. SEIDEL.

Witnesses:

THOMAS J. BEWLEY, GEORGE O. HEZEL.

Images