US2057730A - Sash construction - Google Patents

Description

Oct. 20, 1936. H. MODERAU SASH CONSTRUCTION Filed Oct 14, 1955 I i m@ Herman Modem a .Patentecl Get. 20, 1936 are QFFIQE SASH CONSTRUCTION Illinois Application October 14, 1935, Serial No. 44,816

3 Claims.

In mounting a pane of glass in a metal sash, and particularly where the sash is to be used in the window of a railway car or bus, it is desirable to cushion the glass as much as possible against vibration, and this is ordinarily done by employing a glazing strip made of soft rubber.

The average sash in which the glass is set in a rubber strip will develop some trouble in time by allowing air, water, dust and other foreign matter to seep through at the place or places where the ends of the strip are brought together. This seems to be due to a natural shrinkage or relaxing of tension in the rubber of the strip.

At the time that the glass is put into the sash, the rubber strip is soft and springy and necessarily gets some stretching in being fitted and drawn smoothly along the edge of the glass, and when the ends of the strip, either at one place or at all four corners of the glass, are fitted snugly together by butting or mitering, no gap is left. But after the sash has been in service for a time the eifect of weathering and constant joggling and vibration will cause the rubber to draw up on itself, whereupon the ends of the strip will creep away from each other and a small gap will appear between the ends.

Heretofore, this has usually been attributed to poor fitting in the first instance, but I have discovered that no matter how accurately the ends are initially fitted, the trouble is still likely to occur. In some sash this apparent defect is much more pronounced than in others, depending largely on the kind and length of service to which the sash is subjected.

I have found that by the simple expedient which forms the subject matter of this application the trouble can be easily and effectively remedied. In glazing a sash in accordance with my invention I apply the rubber glazing strip to the edge of the glass in the usual way, bringing the ends of the strip into snug abutment with each other. Instead of then inserting the edge of the glass with the rubber strip on it into the groove in the sash frame-which is the usual procedure with the clamping effect of the groove on the rubber relied upon to hold the latter against further movement-I apply a thin sheet metal clip to the rubber strip in spanning relation to the closely abutted ends thereof, and force small teeth on 50 the ends of the clip to embed themselves in the rubber. After this has been done I insert the glass and rubber strip into the groove in the sash and close up the latter in the usual way on all four sides of the glass. This expedient has been found to prevent any appreciable gaps from developing about the edge of the glass even in instances where the sash is subjected to unusually severe service.

From the foregoing it will be understood that the present invention resides in the provision of 5 means, in the form of a simple bridging clip, for preventing the jointed ends of a rubber glazing strip in a sash from gradually separating from each other and thereby forming gaps through which air and foreign matter can pass.

Other objects and. avantages will be apparent to those skilled in the art upon a more complete understanding of the novel strip holding means and its manner of application.

A few slightly different embodiments of the in-, 15 vention are presented herewith by way of exemplification but it will of course be appreciated that the invention is susceptible of embodiment in still other structurally modified forms coming equally within the scope of the appended claims.

In the drawing:

Fig. 1 is a fragmentary side view of one of the corners of a sheet metal sash which has been glazed in accordance with the invention;

Fig. 2 is a. vertical section through the center plane of the sash corner shown in Fig. 1;

Fig. 3 is an enlarged perspective view of the holding clip shown in Fig. 2;

Fig. 4 is an enlarged perspective view of a slightly modified form of the clip;

Fig. 5 is a view which corresponds to Fig. 2 but 30 which illustrates a different embodiment of the invention;

Fig. 6 is an enlarged perspective view of the clip shown in Fig. 5; and

Fig. '7 is a perspective view of a still different 35 form of clip for application to a joint occurring midway between corners rather than at a corner.

In Figs. 1 and 2 one corner of a sheet metal sash I0 is shown. One of the rails H is detachably secured to another rail i2 by means of a 40 screw I3 which extends from a block 16 in the rail H into another block E5 in the rail [2. A pane of glass it; is positioned in the sash, and the edge of the glass is cushioned in a rubber sealing strip ll of channel formation, which strip is positioned snugly within the usual glazing groove [8 in the rail members of the sash. The strip I8 may extend in one piece completely around the four sides of the sash, or it may be cut in four separate sections, with one section applied to each of the four sides. At one or more of the corners of the sash the ends l9 and 26 of the rubber strip are cut to fit snugly together, ordinarily in right angular abutting relation, as shown in Fig. 2. Before the glass with the rubber glazing strip drawn smoothly along the edges thereof is fitted or slid into the groove I8 of the frame, a small L-shaped clip 2| of thin sheet metal, having teeth 22 at both ends thereof, is fitted over the corner of the glass where the ends of the glazing strip come together, in spanning relation to the ends of the strip, and the teeth 22 are forced into the rubber adjacent the ends. The bottom of the groove I8 in the sash locks the clip 2! and the ends of the glazing strip against any separation after the glass with the rubber strip on it has been placed in the frame and the latter has been closed.

The teeth 22 of the clip will remain embedded in the rubber and will prevent the natural shrinkage of the latter from being localized at the joint between the ends of the strip, with the result that the sash will remain Weather tight throughout a much longer period of service than would otherwise be the case.

In the modification which is shown in Fig. 4, the teeth 23 are struck out from the body 24 of the clip instead of being formed on the extreme ends of the clip.

In the modification which is shown in Figs. 5 and 6, the clip 25 is positioned in the bottom of the channel 26 of the rubber strip 21 between the latter and the edge 28 of the glass, instead of between the strip and the bottom of the groove 29 in the sash. The teeth 30 on the clip are consequently reversed in position on the clip in order to project outwardly into the ends of the strip. In applying a clip of this type, the clip is positioned against the bare edge of the glass and the ends of the rubber strip are brought into overlapping relation to the teeth of the clip and impaled thereon.

In the modification which is shown in Fig. 7.

the clip 3| is made straight instead of angular in order to lock together the abutting ends of a rubber strip where the joint between the ends is located along one of the straight edges of a glass as distinguished from at one of the corners.

I claim:

1. In sash construction, a sash having-a glazing groove therein, a pane of glass, a rubber glazing strip positioned about the edge of the glass within the groove in the sash with the ends of the strip arranged in abutting relation to form a close joint therebetween, and a clip spanning the joint in the strip and provided with teeth which are held embedded in the rubber of both ends of the strip by the positioning of the edge of the glass within the groove in the sash.

2. In sash construction, a sash having a glazing groove therein, a pane of glass, a rubber glazing strip positioned about the edge of the glass within the groove in the sash with the ends of the strip arranged in abutting relation to form a close joint therebetween at one corner of the sash, and an L-shaped sheet metal clip spanning the joint in the strip at the corner and provided with teeth at its ends which are held embedded in the rubber of both ends of the strip by the positioning of the corner of the glass within the groove in the corner of the sash.

3. In sash construction, a sash, a pane of glass, a flexible glazing strip positioned about the edge of the glass in engagement with the sash With the ends of the strip arranged in abutting relation to form a close joint therebetween, and means bridging the ends of the strip in fixed association with each of the same for preventing the ends of the strip from separating from each other at the joint after the glass has been positioned in the sash.

HERMAN MODERAU.

Images