US47352A - Improvement in padlocks - Google Patents

Description

vtumblers removed.

UNITED STATES DANIEL T. BRO\VN, OF NEWTOWN, ASSIGNOR TO JAMES H.

l OF NEW YORK, N. Y.

,PATENT @einem IMPROVEMENT IN PADLOCKS.

Specification forming part of Letters Patent No. 47,352, dated April 1S, 1865.

To all whom it mag/concern:

Be it known that 1, DANIEL T. BROWN, of Newtown, in the county of Queens and State of New York, have invented, made, and applied to use a certain new and useful lmprovement in Padlocks; and I do hereby declare the following to be a full, clear, and eX- act description ot' the said invention, reference being had to the annexed drawings, making part of this specification, wherein- Figure l represents the padlock open and unlocked. Fig. 2 is a similar view with the Fig. 3 is a view of the padlock in its locked position, the shackle being shown partly' in section and the tumblers removed 5 and Fig. 4 shows the lock complete and in the act of being unlocked.

Similar marks of reference denote the same parts.

The nature of my said invention consists in the combination of a swinging bolt and compound tumbler that when acted upon by the key and spring causes the ejection of the shackle, holds back the bolt, draws the stud into the tumblers and holds them in the unlocked position, and when thelock is locked by the hasp being t'orcedin, the spring acting against this compound tumbler causes the same to project the bolt, release the tnmblers by liberating the holding-stud, and bring the compound tumbler itself into the position assumed when the bolt is locked.

In the drawings, a represents the case or box of the lock, the cap-plate being removed. b is the shackle, set on the stud c, and provided with a mortise at the moving end, as usual.

This invention is especially adapted to padlocks, but when applied to box'locks the shape of the caseand hasp will require to be varied, according to the peculiar character of lock.

d is the bolt, moving on the stud eand provided with the talon 1, against which the key acts in throwing the bolt back. 2 is the catch that enters the mortise in the shackle, and 3 is a stud on thelbolt, forming the center or fulcrum for the compound tumbler f. This compound tumbler fis formed with an ineline at 4, a notch at 5, (taking the toe 6 on the case an) and with the tumbler-stud 7. f

h is the springto the compound tumbler, acting against the projection at 8 that is formed on the back portion of the tumbler f.

@1 is a tumbler on the stud 9 and provid( d with the spring l1. k is a second tumbler cn the same stud 9 and acted upon by the spring 10. These tumblers move in opposite directions, as actuated by the keyl that has double bits, as seen in Fig. 4. These tumblers may be increased in number, if desired, and the length of the talons (at l2) varied according to the shape of the key-bits, and in all the tumblers notches are provided (at 13) to re ceive the stud 7. When the key has placed these notches all on line with each other and the said stud 7, decoy notches may be made on the edges of the tumblers, not suf'- iciently deep for receiving the stud 7, and thereby the difficulty ot' picking the lock will be increased.

When locked, the parts assume the position shown in Fig. 3, the catch being in the mor.

tise of the hasp or shackle, and the incline 4 of the compound tumbler against the side of said hasp. On applying the key, the tumblers are first turned to their place, so that their notches come opposite to the stud 7. The further movement of the key swings the bolt, drawing the catch 2out of the mortise in b, and simultaneously throwing the con;- pound tumbler down by thc incline 4, drawing below the end of the shackle as the center of said tumbler on the bolt, moving with the bolt, causes the said tumbler to move bodily sidewise;v This same movement causes the stud 7 to take into the notches of the tumblers, and also compresses the spring h,- hcnce so soon as the end of 2 draws entirely out from the mortise of the shackle the spring h throws the compound tumbler f up and ejects the shackle, and the tumbler f is caught by its notch `5 taking thoftoc 6, so that the compound tumbler holds the bolt d back and the tumblers in the unlocked position.

When the end of the shackle b is pressed in to lock the lock, it first disconnects the.

notch 5 from the toe 6, then the tumbler f is thrown bodily sidewise by the shackleacting against the incline 4, the spring h aiding in this movement by allowing the tumbler f to descend until the catch comes to the mortise bolts as the said tumbler itself moves. The stud MCWILLIAMS,

7 is disconnected by this movement from vthe tumblers i :1nd k, und they assume, their normal position.

The compound tumbler f has a talon upon V it at 14, by which the key is made to aid the springin throwing out the shackle, or this uill act in unlocking, without the spring, in case said sp1-in g should break.

The notch 5 nifty be located on the compound tumbler near the stud 7, and take a toe or projection on the other side of the case from that shown, so that the tumblers and bolt will be held back by them, as before set forth.

LEMUEL W. SERRELL, GHAs. H. SMITH.

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