US1336897A

US1336897A - Door-catch

Info

Publication number: US1336897A
Application number: US125306A
Authority: US
Inventors: Drummond Albert
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-10-12
Filing date: 1916-10-12
Publication date: 1920-04-13
Anticipated expiration: 1937-04-13

Description

A DRUMMOND DOOR CATCH Patented Apr. 13, 1920.

I Gil 9 2| T. C 0 D F. l. rr N o T An C L P P A lil mill" lf maar DRUMMOND, .or Los ANGELES; CALIFORNIA.

DOOR-CATCH.

Specification of Letters Patent.

Patented Apr. 13, 1920.

Application filed October 12, 1916. Serial No. 125,306.

T0 all whom it may concern.'

Be it known that I, ALBERT DRUMMOND, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Door-Catches, of which the following is a specification.

My object is to improvev the details of a door catch, and my invention consists in the novel features herein shown, described and claimed.

Figure l is a view in elevation and section illustrating the door catch as applied for use in connection with a door frame and a door.

Fig. 2 is a View in plan, elevation and section taken on line 2-2 of Fig. 1 and further illustrates the door catch in its applied position and with its parts engaged.

Fig. 3 is a view in Vertical section as seen on the line 3 3 of Fig. 1 and as illustrating the manner in which the resilient locking fingers engage and conform to the movable member.

Referring more particularly to the drawings, 10 indicates the frame of the doorway within which a door 11 is adapted to swing upon suitable 'vertical hinges. The door indicated in the drawings is provided with a screen 12, although it is evident that other than screen doors may be satisfactorily fitted with this catch. Mounted upon the cross rail 14 at the upper edge of the door is an outwardly extending catch member 15 which is suitably secured by its base plate 16 to the frame and is formed with a horizontal stud 17 adapted to be engaged by, and disengaged from a catch member 18. The base plate 16 and the stud 17 are formed integral and the base plate serves as an attaching plate for securing the stud rigidly in position upon the door. The stud 17 is formed with a conical end portion 19 back of which is an annular bead 20. This bead is adapted to be engaged by the arcuate recesses 21 of oppositely disposed spring fingers 22 which are formed integral with a mounting plate 23 and which comprises the catch member 18. Reference being had to Fig. 3 of the drawings, it will be seen that the recess portions of the fingers are arcuate in cross section to conform to the circular periphery of the bead 20 thus holding the stud 17 in a substantial manner when in engagement therewith.

rThe operation 'of the catch is as follows: Assuming that the door is locked as illustrat-ed in Fig. 1 of the drawing, it will be evident that by pressing against the door as indicated by the arrow www, the stud 17 will be withdrawn from between the spring lingers 22 and will thus permit the door to swing open. In forcing the door open, the spring lingers must be forced apart to permit them to pass clear of the annular bead 20 upon the stud and the fingers will thereafter, due to their resiliency, close together. This position will be maintained by the iingers until the door is returned to its closed position, at which time the conical end 19 of the stud 17 will force its way between the outturned ends of the lingers and will cause the lingers to open for the reception of the annular bead 20 which will become seated within the recesses formed upon the fingers. When in this position, the door will again be held against accidental opening.

It will thus be seen that the door catch here provided is of simple construction and will operate in a positive manner to hold a door in, and release it from its closed position.

I claim:

1. A door catch comprising a base plate adapted to be secured to the face of a door, a stud extending from the base plate at right angles; the stud having a conical end portion and an annular bead back ofthe end portion; a mounting plate adapted to be secured to the face of 'a door frame, and oppositely disposed arcuate spring lingers extending from the mounting plate and adapted to engage and yieldingly hold the bead; the outer ends of the spring lingers being ared apart to receive the conical end, so that the bead will snap in and out between the lingers.

2. A door catch including a base plate closed, the outer ends of said spring fingers being curved and flared vapart to receive said conical point and so that Said lingers 10 will spring over said bead. Y

In testimony whereof I have signed my name to this specication.

ALBERT DRUMMON D.