US2523727A - Latch - Google Patents

Description

p 6, 1 50 H. D.\SEVISON 2,523,727

LATCH Filed Oct. 5, 1945 2 Sheets-Sheet 1 IN VEN TOR.

Sept. 26, 1950 Filed Oct. 5; 1945 H. D. SEVISON LATCH 2 Sheets-Sheet 2 JNVENTOR.

/ZZ/Y fl Jeyzboz; W M-IM iatented Sept. 26, 1950 Harry 1). Sevison, Elkhart, Ind., assignor to The .Adlake Company, Chicago, 111., a corporation of Illinois Application October 5, 1945, Serial No. 620,469

2 Claims. (01. 292128) My invention is concerned with an improved latch constructionwhich is particularlyfadapted for use on a horizontal sliding window sash.

.It is an object of my'invention to provide a 1 latch construction, adapted to be mountedon 'a horizontal sliding window sash, of the type now installed in modern automobile busses or the like, having means for engagement with a keeper member on the frame, which will positively and securely retain the sash in closed; position, but, which is readily releasable by a force exerted in the direction of opening movement of the sash.

It is a further object of my invention to provide a latch mechanism of the'type described which is simple in construction and which may be readily manufactured from continuously extruded metal shapes or similar'material.

Other objects and advantages will be apparent from a description of the preferred form of my construction which is shown byway ofexamplein the accompanying drawings wherein:

Fig. 1 is an elevation of a horizontal sliding window sash equipped with my latch mechanism;

- Fig. 2 is a section on an enlarged scale taken on the line 2-2 of Fig. 1;

Fig. 3 is a perspective view of an extruded metal shape, a section of which may be used to form the fixed or base member of my latch;

Fig. 4 is a perspective view of an extruded metal shape, a section of which may be used to form the movable member of my latch;

Fig. 5 is an enlarged view of my latch and the cooperating keeper member installed on a window sash and frame, respectively, with the members indisengaged position;

Fig. 6 is a view taken on the line 66 of Fig. 5 showing the latch mechanism mounted on the sash;

Fig. 7 is a section takenon the line l.l of Fig.6; and v Fig. 8 is a section taken on the line 88 of Fig. 6.

The preferred embodiment of my invention is illustrated in the drawings as installed on a horizontal sliding sash I which is mounted in a frame I I secured in a window aperture in a vehicle Wall I2. The sash I0 is slidingly mounted in the frame I I and cooperates with a fixed sash I3,

.which is also mounted in the frame, to provide a complete closure for the "Window when the Sliding sash i0 is in the position shown in Fig. 1. My latch mechanism I4 (Figs. 1, 2 and is attached to the sliding sash ii] and includes a movable catch member I5 which cooperates with a conventional keeper plate is, attached to the 2 frame II, to securely retain the sash I0 when it is inclosed position and the catch I5 is engaged f with the keeper plate l6.

Reference will be made to the method of manufacturing the parts of my latch in order to-more clearly illustrate its construction and the advan- V tages thereof. As illustrated in Figs. 3 and 4 the two main members of the latch are each produced by forming a continuously extruded shape of the cross" section required for the member. These shapes are produced by well known methods of extruding metal or similar material. The shapes I1 and I8 are produced continuously in the form of a channel or bar and then cut into sections of predetermined length to provide asupply of latch members i9 and 26, respectively (Fig. 7).

V The latch member I9, which is a predetermined '7 length of the generally channel-shaped extrusion H, is provided with a base flange 2|, a side wall 22 and a top flange 23. The base flange'Z-I is adapted to be secured to the frame 24 ofthe sash Ill by means of screws 25, or the like. The side wall 22 extends in agenerally lateral or very nearly perpendicular direction from the base cess 29 is provided on the innerside of the side wall 22 intermediate the base and top flanges.

The latch-memberZO which is a predetermined length of the generally T-shaped extrusion I8 is somewhat shorter than the latch member I9 and is provided with a rounded or beaded portion 30 along one edge'of the top or base 3i thereof. 'The rounded edge is constructed to be received in the bore 26 of the latch member I9 to -form a hinged connection therewith. The opposite top edge of member 20 is provided with an abutment surface 32 adapted to engage with the abutment surface 28 on the latch member I9 to limit the outward movement of the member 20 about the hinge connection with member I9.

A laterally extending bead 33 is provided on the inside top'edge of the member 20 in laterally spaced relation to the abutment surface 32 to provide a protuberance upon which pressure may be applied by the operator to pivot member 20 about its hinged connection with member I9. Movement of themember 20 to the unlatched position which is indicated by dotted lines in Fig. 7 is opposed by a leaf or wire spring 34 refrom longitudinal movement relative to each other by small plugs 40 provided with circumferential grooves 4! which are clinched at 43 in the ends of the bore 26.

My latch structure is particularly designed to be applied to the horizontal sliding sash type of window. When it is desired to open the window by sliding the sash ID to the right as shown in Fig. 1, the operator grasps the members 19 and 20, between the thumb and forefinger, respectively, and by pressure of this thumb on the protuberance 33 of member 20, first disengages catch member 15 from the keeper plate [6, and then, by continued pressure, moves the sash III to open position. When sash I is moved to the .left in Fig. 1 to close the window, the rounded surface 42 of the catch member 15 will strike the forward edge of the keeper .plate 16 and the catch I5 will ride up over the forward portion of the keeper plate l6 and allow the projection 38 to snap into the aperture 39 of the keeper plate. By this arrangement the latch l4 performs the dual function of a latch and a handle member formoving the sash.

While it is preferred to manufacture the two main members l9 and 20, of the latch from the continuous metal extrusions l7 and I8, as described, it will be understood that these members may be made of other materials and in any other desired manner, such as casting, or the like.

I claim:

1. A latch mechanism for a sliding sash window, or the like, comprising an elongated channel-shaped outer member adapted to be fixedly secured to the window sash by one fiange,

a hinge groove on the inside of said flange, an inwardly directed projecting abutment member on the outer edge of the other flange, an elongated inner generally T-shaped member having one edge of the top thereof cooperating with said groove to form a hinge connection between said inner member and said outer member and having the other edge of the top projecting behind said inwardly projecting abutment, a spring member between the inner and outer members urging the edge of the top of the inner member into engagement with the said inwardly projectingabutment, the stem of the inner member projecting outwardly from the top thereof and cut away at both ends thereof, a laterally projecting keeper engaging projection on said stem, the inner member being somewhat smaller in length than the outer member, and means to prevent the inner latch member from moving longitudinally of the outer member.

2. A latch consisting of a length of extruded material having a generally channel-shaped cross 7 section, said length of material constituting 2.

fixed member for said latch and adapted to be secured to one of two relatively movable members, said channel-shaped member having a tubular hinge groove along the inner side of one leg thereof and an inwardly directed abutment flange along the inner side of the other leg in spaced relation to the base of the same, a shorter length of extruded material having a generally T-shaped cross section, said length of material constituting a movable member for said latch,

said T-shaped. member having a cylindrical shaped bead along one edge thereof mounted for hinged movement in the tubular hinge groove in said channel-shaped member, the oppositely disposed edge of said T-shaped member being positioned between the base of said channel-shaped member and said inwardly directed flange on said other leg thereof, the third edge of said T-shaped member extending outwardly from the channelshaped member and having a laterally extending portion adapted to engage with a latch keeper member secured on the other one of said relatively movable members, a spring member arranged to urge said T-shaped member outwardly from said channel-shaped member and thereby urge the laterally extending keeper engaging member toward the hinge carrying leg of said channel-shaped member, and means restraining said members against longitudinal movement.

HARRY D. SEVISON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 126,445 Clough May '7, 1872 1,618,544 McKinney Feb. 22, 1927 2,053,212 Wakefield Sept. 1', 1936 FOREIGN PATENTS Number Country Date 502,702 Great Britain Mar. 23, 1939

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