US100403A - Improvement in padlocks - Google Patents

Description

ILPETERS. PHOTO-LITHDGRAFMER, WASHINGTON. D c:

Louis H ILLEBRAND, or PHILADELPHIA, PENNSYLVANIA.

Lettef'rs Patent No. 100,403, lated March 1, 14870.

-QW mPRovnMEN-r In PADLocKs.

} L Vflihe Schedule referred to in` these Letters Patent and making part of 'the same To all whom it may concern Y Be it known that I, LoUIs HILLEBBAND, of the city and county of Philadelphia, and State of Penn y Sylvania, have invented new and useful Improvements in Padlocks; and I do hereby declare the following to A bea clear and exact description of the nature thereof,

sufficient to enable others skilled iu the art to which my invention appertains to fully understand and use the same, `reference being had to the accompanying drawings making` part of this specification, in which- Figure 4lis a view ot' my improved padlock when closed, the covering-plate being removed to show the parts.`

Figure 2 is a similar view when unlocked. 4

Figures 3, 4, 5, Iand 6 are detached views of diier ent parts. A l

Like letters of reference indicate like parts in the several figures. i

and arranged in relation to the fulcrum of the key` The inner face of a hooked-shaped bit of the key rides over the cam and draws the bolt, andA thus opens the lock; The key `can then be turned in either direction without 'disturbing the -bolt or operating it ntilAit is again locked.

arepresents the casing of my improved padlock, to .which the shackle b is hingedat c.

The nose of this shackle is provided with a slot, (1,4

into which the tongue e of the bolt seizes, a projec- `tion, f, on the bolt, forming, with the' projection g on A the casing, a place yfor the nose of the shackle when locked. y p A In iig. 4 is shown the bolt with its tongue e and projection f. l i A It is provided also with -two slotsfone slot, h., being oblong, in the center of the bolt, and having a eam,`c',

raisingfrom the upper end of it, serves to allow the bolt-plate to play freely around the fulcrum j of the key, which is formed on the casng`,and the other slot, k, also oblong and formed to' the right of slot'i, allows the bolt-,plate to move freely around the pivot of the tumbler or Jtumblers l." A i The boltl has also a shoulder, `cra-which acts against the arm n, attached to or formed on the heel of the e shackle b. A

'l l On the rear of the tongue c of the boltis formed a little projection, o, which, when the lock is open, seizes into a notch, p, in the tumbler l, the part of which latter, above this notch, bears against the projection oAwhen the lock is closed, and prevents the `A bolt from moving backward to release the nose of the A shackle. A A A The bolt and the tumbler are pivoted at opposite sides of the casing, the latter being kept in position, as shown in fig. 1, by means of a spring, q, attached, with one end to the tumbler, and bearing with the other against a shoulder' in the top of the casing.

One arm, r, of' a spring, pivoted at s, bears against the underside of the bolt, having a tendency to keep i the latter `in position, as shown in iig-1, while the other arm, `t, bearing 'against a -pin on the heel of the shackle below its fulcrum, has a tendency to throw the shackle backward when releasedy from the bolt.

The operation of my lock isas follows: l The key, which is shown in iig. 6, and has a hooked bit, u, which, on its inside or inner face, is slightly curved tocorrespond to the shape of cam i, is placed in its fulcrum and turned. The outer face pressing against the inner face of the tumbler, raises the same d unt-il the notch p comes in position to receive the pro My invention consists in a camformed on the boltA jection o ofthe tongue of the bolt, when, the tumbler having been moved to thefull extent possible, its inner face new becomes the bearing against which `the outer face of the bit 'u operates, while, with its curvedl inner face. riding over the cam fi, it forces the bolt the tongue e from the notch d in the nose of `the shackle, which latter, by the force of spring-arm t exerted against its heel, isthrown backward, thus opening the lock. v

'While the shackle is out .of the lock or casing the arm fn, still bearing against the bolt 'at Ithe rear of its fulcrum, prevents the bolt from locking, until the arm, in the Iclosing movement of the shackle, passes the end of shoulder lm, which takes place only when the notch d in the nose of the shackle is in position to receive the tongue e. I In closing the look, 'the bolt is actuated by spring arm fr, and thev tumbler moved to its normal position as soon as projection o has left slot p by means of the or tnmblers.

the cam occupies such position that the key can be the key will ride freely over the cam Without 'disturbturned to the right or left without disturbing the bolt ing the bolt or tumbler, substantially as set forth.

The above signed by me this 4th day of February7 Having thus described my invention, 1870.

What I claim as new therein, and desire to secure by Letters Patent, is-

The cam formed on the bolt, and operated by the inner face of the key-bit, and arranged relatively with the fulerum of the key, so that when the lock is open LOUIS HILLEBRAND.

Witnesses:

JOHN A. WIEDERSHEIM, FRANCIS KUYSER.

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