US33476A

US33476A - Improved lock

Info

Publication number: US33476A
Authority: US
Publication date: 1861-10-15
Anticipated expiration: 1878-10-15

Description

I"UNITED STATES PATENT OEEICE.

CHARLES CLAUDE, OF NEWARK, NEW JERSEY.

IMPRQVED LOCK.

Specification forming part of Letters Patent No. 33,476, dated October 15, 186i.

T0 all whom it may concern.'

Be it known that I, CHARLES CLAUDE, of Newark, in the4 county of Essex, in the State of New Jersey, have inventeda new Improvement in Locks, whereby they are rendered more burglar-proof; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in which` Figure 1 is an elevation of the improvement attached to a well-known door-latch,

groove. Fig. 7 is the locking-plate B. Fig.'

8 is the plate that works into the revolving groove or sleeve in thekey.

The nature of my invention consists ot' a key with a stationary groove on the periphery opposite the bit and a revolving grooved sleeve also on the periphery, and of an attachment to any Aknown form of locks; of locking-plates B Blocking into and holding thimble Fin its place until the key enters and frees the plates from the thimble; also,

lkey-plate D and locking-bolts HJ, which lock and hold key-hole or stop-plate G and thimble F in their positions till they are removed by the key.

To enablelothers to make and use my in vention,I will proceed to describe its construction and operation.

I attach my improvements to the face or side plate of any known form of locks.

A is a thick escutcheon-plate to guide and steady the key to its position to unlock my improvements and also the common lock.

B B are lock-plates which "gear into and are held iirmly to thimble F by spring C, which irmly and securely holds in position thimble F.

D is a plate to iit into the revolving groove in the key, and is kept in its position by spring E. It the revolving grooved sleeve on the.. periphery of the key is not inline with the stationary groove, the periphery ot' the key will come in contact with. the plate, thereby vpreventing the revolution of the key.

F is the thimble, which has on its back side pin K, which comes in Contact with the key-hole or stop-plate G, (which should be hardened to the greatest intensity possible to prevent its being drilled to effect an entrance to unlock the common lock back of it,) which plate G is locked in its position when the key is not in the lock by bolt I-I, kept to its place by spring I, which spring I also keeps bolt .I down to its position to hold thimble F firmly in position when the key is not in the thimble.

The key-hole or stop-plate G has 'a pivot L, which is its fnlcrum. 'lhe plate G is returned to position over the key-hole by the spring M when the keyis removed.

N Vis the key, having astationary groove O on its periphery opposite the bit, and a recessedrevolving grooved sleeve 0', that can be brought in line with the groove O'.

Operation: The revolving grooved sleeve O on the periphery of the key is brought in line with stationary `groove O. The key is then inserted'tl'xrough the escuteheon-plate, and on its entrance the" lock-plates B B arepressed from locking position with the thimble F. The key also presses locking-bolts Il and .I from their contact with key-'hole plate G and thimble F. The key is then revolved one-quarter of a circle, thereby removing the key-holevor stop-plate G suliciently to allow the key to enter onto and connect with the.

common lock or latch to lock or unlock the same.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The combination of stop-plate G with lock-bolt H and spring I.

2. Thimble F, in combination with lockbolt .I and spring I.

3. Key N, in combination with the lock, as

described.

CHARLES CLAUDE. Vvitnesses. l

HENRY J. GEEIBEE, M. HASKELL.