US1369820A - Push-lock - Google Patents

Description

L. KRIZS.

PUSH LOCK.

APPLICATION man JUNE 18. 1920.

1,369,820. Patented Mar. 1, 1921.

myzwroig Loam 1935- I 0 ATTORNEY UNITED STATES LOUIS xmzs, or NEW YORK, N. vY.

rusH-Loox.

Specification of Letters'Patent.

ateiited Mar. 1,

Application filed June is, 1920. Serial No. 389,807.

To all whom it may concern.

Be it known that I, LOUIS Knrzs, citizen of Hungary, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Push-Locks, of which the fol lowing is a specification.

This invention relates to latches and especially to that type which is mechanically released by the pressing of a button.

The object of this invention is the provision of a small, simple and inexpensive latch adapted for use in furniture, windows, cabinets and the like, in which it is desirable, on occasion, to hold relatively movable parts stationary.

A further object of this invention is the provision of a latch consisting of few parts which may be quickly and easily assembled and which cannot readily get out of order.

To attain the above and other objects, I employ the devices shown in their preferred forms in the accompanying drawing, in which-- Figure 1 is a horizontal section of my device on line 11 of Fig. 2.

Fig. 2 is a rear view of my device.

Fig. 3 is a perspective view of the latch bolt and of the spring actuating the same.

Fig. 41 is a horizontal section of part of a window to which my device has been attached for looking a sash in position.

In the practical embodiment of my invention, the U-shaped frame 10 is held to frame plate 11 by suitable tenons 12 passed through mortises in said plate, the outer ends of said tenons being slightly spread to hold theparts firmly together. A push button 13 passing through a suitable opening in plate 11, is provided with a spring post 14 and a collar 15, both integral with said button, said collar being arranged to engage the under side of said plate, the'extremlty of said post passing through an opening 16 in frame 10. For normally holding button 13 in its outermost position, spring 17 is positioned around post 14, one end of said spring abutting against button 13 and the other end against frame 10.

The latch bolt member 18 has a latch bolt 19 at one end thereof, while a follower 20 is positioned at the other end thereof, said follower having an an ularly disposed surface 21 on the inner slde thereof arranged for engagement with collar 15. Braces 22 join parts 20 and 21, whereby the entire member 18 can be made in one piecefor strength and economy. For use as a window lock,the latch bolt 19 is made cylindrical as shown 1n Fig. 4. To attach flat spring 23 to member 18, suitable notches, equal in' width to the thickness of said spring are made in the end of said member near follower 20. After the spring has been insertedmto said notches, the metal at the ex-, tremitles of said notches is spread so as to partly close the notches over the edge of sald sprlng, whereby the spring is firmly held in place. 7

Pressure on button 13 in the direction of the arrow (Fig. 1) moves collar 15 in the same d1rect1on, said collar engaging the edge 21 of follower 20 and moving member 18 against the action of spring 23 to disengage latch bolt 19 from plate 24, which is suitably attached to the cabinet, window frame or piece of furniture, as by screws 25. Release of button 13 causes spring 17 to push said button outwardly, disengaging collar 15 from follower 20 and allowing spring 23 to urge the latch bolt into its operative po-I sition.

It will be seen that the number of separate parts is reduced to a minimum, and that sa1d parts are readily assembled, so that my devlce while efiicient, is comparatively in ex ensive.

hat I claim is V 1. A latch comprising a casing, a boltframe slidable in said casing, a bolt formed on one end of said boltframe, a beveled offset on the opposite end of said bolt frame, a push-button extending through one wall of the casing and having a shank extending transversely through the said frame, a spring surrounding said shank and normally pressing said pusn-butt0n outward. and a radially extending peripheral flange formed on said push-button and adapted to engage the said beveled offset on the bolt frame to move the bolt to locking position When the push-button is moved inwardly and to bear against the casin wall to limit the outward movement of sald push-button under the influence ofthe said spring.

2. A latch comprising a casing, a bolt-' frame slidable in said casing, a bolt formed on one end of said bolt-frame, a beveled offset on the opposite end of said bolt frame, a push-button extending through one wall of the casing and having a shank extending transversely through the said frame, a

spring surrounding said shank and normally presslng said push-button outward, and a radially extending peripheral flange formed on said push-button and adapted to engage the said beveled ofiset on the bolt frame to a move the bolt to locking position when the push-button is moved inwardly and to bear against the casing wall to limit the outward movement of said push-button under the influence of the said spring, and a bow spring 10 In' testimony whereof I have affixed my 15 signature this 17th day of June 1920.

i LOUIS KRIZS.

Images