US244951A

US244951A - trussell

Info

Publication number: US244951A
Authority: US
Publication date: 1881-07-26
Anticipated expiration: 1898-07-26

Description

(Model) I I J. W.-TR,USSE LL. v DOOR SEGURER'. No. 244,951. Patented July 26, 1881.

UNITED STATES PATENT OFFICE.

JOSHUA W. TRU SSELL, OF ROGKLAND, MAINE, ASSIGNOR TO JOSEPH W. OOVEL AND JOHN E. HANLY, BOTH OF SAME PLACE.

DOOR-SECURER.

SPECIFICATION forming part of Letters Patent No. 244,951, dated July 26, 1881.

Application filed April 9, 1881. (ModeL) To allwhom it may concern Be it known that I, JOSHUA WATSON Tens- SELL, of Rockland, in the county of Knox and State of Maine, have invented a new and useful Improvement in Safety-Keys for Door- Fastenings; and I do'hereby declare that the following is a full, clear, and exact description of the same.

My invention relates to improvements in safety-keys forfastenin g doors, drawers,'cases, or where locks are ordinarily used, in which a central shaft armed with sharp projections from two opposite sides is inclosed in a rectangular wedge-shaped frame, the shaft being provided with a thumb-screw head in one instance and a lever in the other, for turning it at right angles with the frame; and the objects of my improvement are, first, simplicity of structure; second, to make easy and quick adjustment; third, in beingtotallyoutof reach from the opposite side of the door; fourth, in being adjustable to any kind of door. I attain these objects by the s1: ecial-construction hereinafter set forth, and the accompanying drawings, in which- Figure 1 represents a side view; Fig. 2, an end view. Fig. 3 shows central shaft turned down as in use for top and bottom of door from the outside. 1

In the accompanying drawings similar letters refer to similar parts.

Fig. 1 represents a side "iew, in which a is the thumb-screw handle; d, the central shaft; 7), the rectangular wedge-shaped frame, and c the sharp projections from two opposite sides The shape of the frame bis seen of the shaft. to be wedge-shaped, thus admitting of use on tight-fitting doors, also to forceithe door away from the frame on that side, preventing any loose motion. The frame also protects the pocket from the sharp projections.

As shown in Fig. 2, the safety-key is forced between the closed door and its frame until held firmly in place. The central shaft is then turned bymeans of the thumb-screw handle a at right angles to the frame b, thus causing the projection c to enter the wood-work on either side and firmly binding them together. The

frame b is hinged to the central shaft, d, by a stout pivot, f. The end of the central shaft, d, being square, admits of purchase in turning the shaft when bent at right angles. This is the shape of the safety-key, Fig. 3, ready for use at bottom of the door. Inserted flatwise beneath the door, and forced in as far as possible, the shaft is then turned at right angles by means of the lever madeof the frame b.

I am aware that door-securers in the form of wedge shaped shafts armed with oppositesharp projections are uotbroadiy new. .1 do not-therefore claim such a securer; but

What I do claim is- In a door-securer, the combination, with the shaft a, armed with opposite sharp projections, of the frame I), in which said shaft is journaled, having beveled faces, substantially as described, whereby the said projections are compelled to sink equally deep in the wood of both door and jamb,and whereby the strength of the fastening is increased.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSHUA WATSON TRUSSELL.

Witnesses:

A. D. BLAOKINTON, F. M. STARRETT.