US382680A - Chusetts - Google Patents

Description

(No Model.) v E. BARRETT 812 H. G. BAKER,-

\ KEY FASTENBR.

No. 382,680. "PatentedMa y is, 1888.

UNITED STATES PATENT-"OFEIGEQ EDWARD BARRETT AND HARRY e. BAKER, or FALL RIVER, MASSA- GHUSEITS.

'KEY-FAST'ENER.

SPECIFICATION forming part of Letters Patent No. 382,680, dated.May 15, 1888.

Application filed February 3,1288. BI'iRlNO. 262,889. (No model.)

To all whom it may concern:

Beit known that we, EDWARD BARRETT and HARRY G. BAKER, of FallRiver, in the county of Bristol, State of Massachusetts, have invented a certain new and useful Improvement in Key-Fasteners, of which the following isa description sufficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and use the same, reference being bad to the accompanying drawings, forming part of this specification, in which i Figure 1 is a side elevation representing our improved. key-fastener withdrawn or when not in use; Fig. 2, a like view representing it advanced or when in use, and Fig. 3 an enlarged view of the locking-flange.

Like letters and figures of reference indicate corresponding parts in the different figures of the drawings.

Our invention relates to that class of keyfasteners which are designedfor fastening doorkeys in such a manner as to prevent them from being turned by burglars, thieves, &c., from the outer side of the door or room; and it consists in the novel features hereinafter fully set forth and claimed, the object being to pro duce asimpler, cheaper, and more effective device of this character than is now in ordinary plate provided with a key-hole, a", and which is secured to the inner side ofthe door by screws t, but in such a position of course that the key-hole will register with the key-hole in the door and look. A rectangular metallic plate, 0, is fitted to slide longitudinally on the 'escutcheon B by means of headed screws 12,

which pass through elongated slots m in said plate into said escutcheon. A recess, is, is formed in one endof the plate 0, opposite the upper portion, 1; of the key-hole as, said recess being of such width as to admit the flattened body of the key 1', but narrow enough to prevent the key from being turned in the lock 7 whenits bodyis inserted insaid recess,as shown in Fig. 2. A horizontally-arranged rod, f, is fitted to slide longitudinally in eyes or lugs d,

secured to the plate 0, said rod being provided with a laterally projecting elastic arm, g, having a knob, h, at its outer or free end. Projecting horizontally from the escutcheon B, near the plate 0, and arranged in parallelism therewith,is alocking-flange, 1 adapted to engage the arm 9 on the-rod f. This flange is undercut slightly at each end, as shown at z, I

and has its upper corners rounded,so that the army may be readily forced down over either of its overhanging ends, in accordance with the position of the rod f, by pressing on the knob h.

In the use of our improvement the door is locked in the usual manner and the key z.

turned into the position shown in Fig. 2. The plate 0 isthen moved forward until the key is in the recess k, after which the rod f is moved forward until the arm gisopposite the forward end of the flange y, when said arm is forced downward-or inward toward the escutcheon- B until it springs over the rounded corner of said flange and falls into the recess 2, thereby not only fastening the key by means of the plate 0, but locking said plate by the arm 9, and said arm by the undercut corners of the flange y, in a manner that will be readily understood by all conversant with such matters withouta more explicit description.

The plate 0, being sufficiently large to cover: I

placing the lugs at a considerable distance f apart on the plate 0 the rod f is permitted to p slide sufficiently to enable a flange,y, of greater length and strength to be employed than would otherwise be convenient.

The lugs d may be cast integral or formed in one piece with the plate. 0, and the flange 3 cast integral with the escutcheon B, if deand the locking-flange y, secured thereto, in-

said plate, the rod f, sliding in said lugs, and the arm connected to said rod between said lugs, and adapted to be sprung over either end of said locking-flange for locking the plate in i5 operative or inoperative position, substantially as described.

EDWARD BARRETT. HARRY G. BAKER.

sired-a construction which we deem preferable to having them made separately.

Having thus explained our invention, what we claim is-- The es'cutcheon B, having akey-hole therein,

combination with the plate G, having recess k; adapted to register with the shank portion of said key-hole, and also having slots m, the headed screws 12, passing through said slots and into the escutcheon, the lugs d d upon Witnesses:

GEORGE E. BAMFORD, GEORGE A. HYDE.

Images