US379508A - Combination-padlock - Google Patents

Description

(No Model.) D

- E. L'. DRAKE.

COMBINATION PADLOGK.

No. 379,508; Patented Mar. 13, 1888.

INVENTOR:

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ATTORNEYS.

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WITNESSES NrrED STATES PATENT Fries.

EDWIN L. DRAKE, OF WINCHESTER, TENNESSEE.

COMBlNATlON-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 379,508, dated March 13,1888.

Application filed July 22, 1887. Serial No. 245,030.

To all whom it may concern.-

Be it known that I, EDWIN L. DRAKE, of Winchester, in the county of Franklin and State of Tennessee, have invented a new and useful Improvement in Combination Padlocks, of which the following is a specification.

My invention is an improved combinationpadlock; and it consists particularly in the novel constructions and combinations of parts whereby to facilitate the changes of the combination in the manner more fully described hereinafter.

In the drawings, Figure l is a side View of my improved padlock. Fig. 2 is a sectional view thereof with the tumblers and washers in position for the adjustment of the bolt to un locked position. Fig. 8 is a detail perspective view of one end of the lock-case. Fig. 4 is a detail view of thebolt and its crown-pieee, and Fig. 5 represents the tumblers in detail.

The lock-case A may be of any suitable shape. It is provided at one end with asocket, a, to receve the swinging end of theshackle B, which is pivoted at one end, b, to the case, and has its said swinging end formed with an opening, I), to receive the point of the bolt when the parts are in locked position. At its socketed end the case is provided with a number of letters, A, B, O, &c., or other suitable characters, with adjacent guide-lines to assist in properly aligning the tumblers in the use of the invention.

Through the end A of the case I form an opening, a, for the bolt 0. This opening a has a slot or wing, a formed from it, through which the bolt may be removed from the case when so desired. The bolt 0 has a suitable head, 0, by which it may be turned, and is provided with a number of bits, D, the'number of which, like that of the tumblers E E E, hereinafter described,may obviouslybevaried.

In the construction shown I employ three tumblers, which are alike in construction,having central bolt-openings, e, and radial slots 6 for the bits D. I also provide the tumblers with blindnotches e surrounding the boltopening,forthe purpose of misleading any one who should attempt to feel the look, as the said notches will give the same impression to one feeling the look as the slot for the bit. These tumblers are provided around their pe- (No model.)

ripheries with series of figures or other characters,preferabl y figures from 1 to 8, as shown.

From Fig. 5 it will beseen that the slots for the bits are formed in the different tumblers in radial line with different figures, that of tumbler E being in line with 1, of tumbler E in line with 5, and tumbler E in line with 8, the combination of said tumblers for unlocking being 1, 5, and 8 when in the arrangement shown in Fig. 1; but, manifestly, the combination of the tumblers might be 5 8 1, 8 1 5, 5 1 S, 8 5 1, or 1 8 5 by transposing the tumblers. Between the tumblers I place washers F, which have bolt-openings f and slots f, and said washers are made wider than the tumblers; so they are keyed on the bolt in both the locked and unlocked positions of the bolt. These washers serve to avoid the turning of one tumbler by the frictional contact of the next tumbler in turning the latter.

The bolt, outside of the case and next its head,is provided with a crown-piece, G, which is non-circular, conforming to the non-circular recess 9 in the end A of the lock-case, such case and crown piece being thereby formed with interlocking portions. It is preferred to form the crown-piece with a large number of sides; but'it is obvious that by providing a single projection or key on one of such partsthat is, the end A and crownpiece G-and numerous keyways on the other the parts may be set in a large number of difierent positions or adjustments. This crown-piece has a number of marks,usually figures 1, 2, 3,850., one (in the arrangement shown, 3) of which is in line with the bits of the bolt; so by bringing the combinations 1, 5,8, and 3 in line the bolt may be moved longitudinally to lock or unlock it.

It is preferred to form the crown-piece separate from the bolt and to interlock it with such bolt by providing it with a non-circular opening, H, fitting a non-circular portion, H, of the bolt, so the crown-piece may be set on the bolt to bring different ones of its characters in line with the bits to change the combination. Bytheaid of this crown-piece it will be seen a great number of different combinations may be made.

In order to further increase the number of combinations which may be formed, I prefer to form the tumblers with inner and outersections, I and I, the outer section, I, being practically a ring, and the construction being such as to permit the adjustment of the outer 5 section to different rotary positions relative to the inner one. By this means it is manifest the number of combinations may be largely increased. In carrying out this feature of my invention the inner section may be formed 10 non-circular and be fitted in a correspondinglyshaped opening in the othersection, as shown most clearly in Fig. 5.

Having thus described my invention, what I claim as new is v I 5 1. In a lock, the combination of the case,

the bolt provided with a non-circular crownpiece, such case and crown-piece being provided with interlocking portions, and the tumblers and bits, substantially as set forth.

2o 2. The combination of the bolt having bits and a crown-piece, such crown-piece and bolt being provided with interlocking portions,and the tumblers, substantially as set forth.

3. The combination of the case, the bolt 25 having bits and provided with a non-circular portion the crown-piecehaving a non-circular opening to fit the non-circular portion of the bolt, such crown-piece and case being provided with interlocking portions,and the tumblers, substantially as set forth.

4. The combination, in a lock, of the case having a non-circular recess, 9, and provided with an opening, a,leadingfrom said recess, and with a socket, a, for the point of the shackle, the shackle, the crown piece G, fitted to re- 5 cess g and having a non-circular opening, H, the bolt having a non-circular portion, H,the tumblers,and the washers interposed between the same, substantially as set forth.

5. A combination padlock comprising a case, a bolt having bits, the tumblers, and the washers fitted on the said bolt between the tumblers and made of a width exceeding the length of the bits, substantially as and for the purposes specified.

EDWIN L. DRAKE.

W'itnesses:

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