US426273A

US426273A - William hover

Info

Publication number: US426273A
Authority: US
Publication date: 1890-04-22
Anticipated expiration: 1907-04-22

Description

(Model.)

W. HOVER.

LOCK.

No. 426,273. Patented Apr. 22,1890.

- UNITED STATES PATENT OFFICE.

WILLIAM HOVER, OF FREEPORT, ILLINOIS.

LOCK.

SPECIFICATION forming part of Letters Patent No. 426,273, dated April 22, 1890.

Application filed August 30, 1889. Serial No. 322,469.- (Model T0 all whom it may concern:

Be it known that I, WILLiAM HOVER, of Freeport, in the count-y of Stephenson and State of Illinois, have invented a new and useful Improvement in Locks, of which the following is a full, clear, and exact. description.

The object of my invention is to provide a strong safe-door lock, the construction of which is proof against plastic impressions by burglars from which to make duplicate keys.

To this end my invention consists in the construction and the combination of parts, as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in the drawings.

Figure l represents an exact elevation of the lock with the top plate removed. Fig. 2 is a longitudinal horizontal section of the lock. Figs. 3, fl, 5, 6, and 7 are representations of the various operative parts of the lock. Fig. 8 is a top plan of same.

The bolt A is made with a cross-bar F., and is operated by a cam B, through which runs a rod at the point II, to the ends of which are fixed the usual knobs. A reciprocating` lever D is pivotally attached to the bolt at F, and has a flat spring R lying between said lever and bolt, and abuts against said lever, holding same in place, and at the same time being compact and taking up little space in the construction of lock. Said reciprocating lever is adapted to engage a post set in the case at g, which, when engaged at the post, locks the bolt out and holds it fixed in place, thus locking the door, to which the lock may be attached. Two slidenplates K and L lie along the two sides of the bolt A, which slides longitudinally when put in operation by the action of the cam B. The slide-plate K lies above the reciprocating lever, as shown in Fig. 2, and is provided with a flat spring, which bears against the side of case, said spring preventing displacement of plate should the lock be jarred, the purpose of said plate being, when pushed to the lett, the bolt being projected, to hold the reciprocating lever in engagement with the post at f, for when said slide-plate is pushed under the reciprocating lever further movement is stopped by the lip in meeting with slidc-plate K. Pushing the said plate to the right allows room for the action and consequent disengagement of the reciprocating lever, and the bolt may again be operated by the cam B. The purpose of the slide-plate L is to open and close the aperture in the face of the lock where the key is inserted, and lies along the under side of the bolt, as shown in Fig. 2, and has also a fiat spring b abutting against the case. The lock is also provided with a slipbolt O, by which the door may be bolted on the inside, said bolt being held positively by a friction-spring S abutting against the arm of bolt and side of plate. The larger bolt A is held projected by a spring a., one end of which is curled over a post b and the other free end fitting into a recess into the transverse bar of the bolt.

The operation of locking the door to which the lock may be attached is as follows: The key M is inserted in the opening I, Fig. S, of the face of the lock, and is then placed in the slot n of the slide-plate L. Said plate is pushed aside, leaving the opening clear for the further insertion of the key, which is placed against the reciprocating lever, and upon pressing down upon same saidv lever will engage with the post at g, and a further insertion of the key until it is between the two shoulders e e of slide-plate K and the plate pushed to the left will prohibit any inward movement of the latch or lock, as has been hereinbefore described. The key is now used to push plate L back again and the keyhole is closed.

To unlock, reverse the process j ust described.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, isM

l. In a lock of the character described, the combination of a main bolt, actuated by a spring and knob attachment alternately in opposite directions, with a pair of plates pro vided with springs and recesses opening in opposite directions with relation to each other, and disposed and operating at two different sides of the main bolt, and a pivotal catch, substantially as described.

2. A lock of the character described, con sisting of a main bolt and casing provided with a stationary projection, in combination With a notched pivotal reciprocating lever pivotal lever with the projection inthe casing, pivoted to the main bolt, and a longitudinallyas specified. IO sliding recess-plate provided with a spring In testimony whereof Iaix mysignatnre in and adapted to slide to and from between the presence of two Witnesses.

casing and the rear end of the pivotal lever, VILLIAM HOVER.

all constructed and combined to operate Sub- Vitnesses: stantially as describedmhereby the lock may JOHN W. COCHRAN, be made positive by the engagement of the A. L. GREEN.