US543850A

US543850A - Key-fastener

Info

Publication number: US543850A
Authority: US
Publication date: 1895-08-06
Anticipated expiration: 1912-08-06

Description

(No Model.)

E. I. (JOHN & T. 1-1. CAMPBELL.

KEY FASTENER.

-Pafwnted Aug. 6, 1895.

than the one shown, these'would be attached UNITED STATES PATENT EEICE.

EVEN I. COHN AND THOMAS H. CAMPBELL, OF SEATTLE, WASHINGTON.

KEY-FASTENER. e

SPECIFICATION forming part of Letters Patent No. 543,850, dated August 6, 1895.

Application filed March 16, 1895.

To all whom it may concern.-

Be it known that we, EVEN I. COHN and THOMAS H. CAMPBELL, citizens of the United States, residing at Seattle, in the county of King and State of WVashingtomhave invented certain new and useful Improvements in Key- Locks; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention-relates to key-locks or devices for holding keys so they cannot be turned in the lock; and it consists of a flat keeper pivoted bya wire-bail to the door, so that it may be turned up out of the way when not in use.

This keeper enters the perforated handle of the key and is held from being forced out by a spring catch or latch. It also serves as a screen to cover the keyhole and prevent prying therethrough.

In the drawings, Figure 1 is a front view of our device in place on a lock, the door-knob being removed and the key-lock raised. Fig. 2 is the same, with the key-lock inserted in the key and the door-knob in place. Fig. 3 is a side view, the inoperative position of the key-lock being shown in dotted lines.

The door-lock to which we have shown our key-lock as applied is the common form of mortise-lock, A being the escutheon or plate containing the keyhole and handle. Upon each side of this plate, and having its pivot slightly above the rounded portion of the keyhole, are placed a couple of small plates 13,

which are screwed or otherwise attached to the door. In the case of another kind of lock in a similar position-namely, just above and on each side of the stem portion of the keyhole. To these plates B is pivoted the bent bail or wire 0, which carries upon its outer portion the keeper Dpivoted thereon. This bail is made so that its ends will have a tendency to spring outward against the pivotplates B, thus causing enough friction to hold it in whatever position it is placed. The keeper consists of a small fiat plate of such a Serial No. 542,003. (No model.)

width as to fit snugly in the hole in the key handle. The bail O is of such a length that when brought down to the horizontal position, as shownin Figs. 2 and 3, it will carry the keeper D directly over the holein the keyhandle when the key is in the lock.

To prevent the keeper from being worked up out of the key a latch E is pivoted to the bail at the same place as the keeper. This has a lower hooked end which hooks over the end of the key, as shown in Figs. 2 and 3. This latch being on the side of the keeper away from the keyhole makes it impossible for it to be thrown off and the keeper thrown out of the key by the manipulation of any instrument through the keyhole.

When the door is not locked, the device is thrown up against the door, as shown in Fig. 1, and by dotted lines in Fig. 3. In this position it is unnoticeable and entirely out of the way.

The keeper D of our device serves another purpose than as a keeper to prevent the key from being turned. Extending, as it does,

across the front of the entire keyhole, it cuts off all chance of anything being seen through the keyhole. It cannot be pushed away either.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is

The combination in a key-lock of an arm pivoted to the door above the key hole and so that it may be swung up against the side of the door or extended horizontally therefrom, a keeper pivoted to the outer end thereof so that it may be entered in the key handle, of a latch or hook pivoted to the arm at the same point as the keeper and adapted to hook over the key handle on the side of the keeper away from the door, substantially as shown and described.

In testimony whereof we affix our signatures in presence of two witnesses.

EVEN I. OOHN.

THOMAS H. CAMPBELL.

Witnesses:

J. B. MURPHY, H. L. REYNOLDS.