US512308A - Key-fastener - Google Patents

Description

- F. J. OUDIN.

KEY ASTENER.

v Patented Jan. 9, 1894.

N f x I WITNESSES f v n A P m: mmomu umcsmmma wAamr-qrou n UNITED STATES PATENT OFFICE.

FREDRICK J. LOUDIN, OF RAVENNA, OHIO.

KEY-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 512,308, dated January 9, 1894.

Application filed February 23. 1898- Serial No. 463,359- (No model.)

This invention relates to key-fasteners.

which are attached to the knob-shaft or doorhandle above the key-hole and engage with the eyed-end of the key to keep it from being turned in the lock/ The object of the invention is to provide a spring-actuated plate with an open recess to received the eyed-end of the key, and to suspend said plate from the door-handle by a spring in a manner that the plate may be carried toward the door against a spring resistance, when inserting the key through it and into the lock, whereby the tendency of the plate to spring back establishes and preserves an engagement of the eyed-end of the key with the plate-recess. I

Another object is to lock the eyed-end of the key in the recess of the plate, by means of a slide having vertical bearings in said plate, and also to cover the key-hole in the plate with said slide.

In the drawings forming a part of this specification, Figure 1 is a perspective view, showing the key in connection with the fastener; and Fig. 2 is an elevation, showing the door, and parts of the key and fastener, in vertical section.

Referring to the lettered parts of the drawings, A represents the door, and B the knobshaft above the key-hole. The plate, D, has an open recess, e, in the front face and transversely thereto, and open eyes, a, at each side on the back face, and also a central key-hole, F, leading. from the open recess, e, through the plate, a portion of which key-hole is indicated by dotted lines in Fig. 1. This plate, D, is suspended from the shaft, B, by an elastic metal wire, bent upon itself to form a loop at the top, which is placed on the shaft B. Be-.

low this loop the wire is formed into spirals, E, which rest against the door, and from and caught onto the plate.

thence extends downward, terminating in two free ends which are detachably caught in the open eyes, c, of the plate, D, thus constituting a spring, I, which suspends the plate.

At J is a slide, which has vertical bearings in the plate D. This slide passesdown through the eyed-end of the key, thus locking the eyed: end of the key in said recess, so that the plate cannot bedrawn toward the door to disengage said eyed-end of the key from the recess, which otherwise might be done by a burglar from the outside of the door with some suitable implement, inserted through the key-hole It will be observed that this slide also oovers the key-hole in the plate D,'making it impossible to see through the k'ey-hole from the outside.

In the operation, the spring, I, is detached from the open eyes, 0, of the plate D, then placed over the knob-shaft and again attached to the plate D. The key, H, is then inserted through the hole, F, in the plate and said plate is borne toward the door against a spring resistance, until the door is locked, at which time said plate is released, when the reaction of the spring carries the plate back until the open recess, e, receives the eyed-end of the key, the shoulders of said recess preventing any possibility of the key being turned in the look from the outside.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent of the United States, is=- 1. A key-fastener comprising a plate having the recess in the front face and a spring for suspending the plate from the knob-shaft or door-handle; substantially as set forth.

2. A key-fastener comprising a spring for attachment to the knob-shaft or door-handle, a plate provided with the front recess and the rear open eyes for detachable attachment with the ends of said spring; substantially as set forth.

3. A key-fastener comprising a plate having the recess in the front face, and a keyhole leading from said recess through the plate, a slide adapted to pass down through the eyed-end of the key, and a spring for susand preserving an engagement of the recess pending said plate from the knob-shaft or with the eyed-end of the key; substantially door-handle; substantially as set forth. as set forth.

4. The combination of aknob-shaft or door- In testimony to the foregoing I have here- 5 handle, a key, a spring-actuated plate susunto subscribed my name in the presence of r 5 pended from said knob-shaft or door-handle, two witnesses.

said plate being provided with the recess and FREDRIOK J. LOUDIN. key-hole, whereby the plate is carried toward Witnesses: the door, in the act of locking, against a spring 0. A. MYERS,

1o resistance, and the reaction thereof causing W. E. GOODRICH.

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