US2132217A - Sash construction - Google Patents

Description

Oct. 4, 1938. J. c. NEUENDORF SASH CONSTRUCTION Filed March 50, 1937 I F in! INVENTOR.

MY? m5 6'? flfeaemawf BY ATTSEJI? Patented Oct. 4, 1938 UNITED STATES PATENT OFFICE SASH CONSTRUCTION Julius C. Neuendorf, Detroit, Mich. Application March so, 1937, Serial No. 133,799

2 Claims. (01. 20-565) This invention relates to sash construction and the rib 2. A rubber channel 5 is fitted about the the object of the invention is to provide a sash edge of each pane of glass 6 and these panes with which to all appearances is composed of divided the rubber channels therein are positioned on lights but which actually consists of clear sheets opposite sides of thecentral rib 2 and on the 5 of glass mounted in spaced relation in the sash shoulders 3 and 4. Slots 1 are cut into the sash and provided with dividing muntin bars between I to receive the edges of the securing spring metal the glass panes to give the appearance of divided strips 8 and these strips are turned outwardly lights. and are return bent to provide a spring flange 9 One of the particular objects of the invention is which engages and presses the glass panes against 10 to provide a sash having two panes of glass the central rib 2. As the flanges 9 are of spring 10 mounted in spaced relation and which may be metal, they firmly hold the panes in place and readily washed over the entire surface without the compress the rubber channel portions against the troublesome cleaning in the corners necessitated rib 2 and nails it may be driven through the sash in a divided sash while the sash, at the same time, and member 8 as shown in Fig. 2 to secure the has the appearance of a divided sash without any spring metal strips in place in their slots. The 15 of its drawbacks. spring metal strip construction is covered more Another object of the invention is to produce a particularly in my co-pending application, Serial sash having the appearance of a divided sash but No. 109,848, for Metal sash strips, filed November which does not require the fitting of small panes 9, 1936. If desired, however, putty may be used in of glass between the muntin hars. place of the spring metal strips ii to secure the 20 A further object of the invention is to provide a glass panes in place in the sash. double glazed window consisting of a pair of A series of muntin bars are positioned between glass panes sealed in rubber and positioned the spaced glass panes 6. These muntin bars are against opposite sides of assembled muntin bars different than the ordinary muntin bars in that to provide a sash having air spaces for insulation they are not provided with shoulders against 25 with the panes of glass sealed at the edges to the which the small panes of glass are usually fitted. sash. In fact, the muntin bars are merely imitation A further object of the invention is to provide muntin bars and are not strictly muntin bars in muntin bars which maybe assembled and enclosed the true sense of the word in that they support between the two panes of glass to properly space no small glass panes. The cross section of one 80 and support the panes of glass within the edges of the muntin bars is shown in Fig. 6 and this and providing in combination with the panes of muntin bar H is provided with fiat surfaces I2 glass, a unitary structure having a series of and I4 against which the glass panes 6 may rest. small dead air pockets. The muntin bars are assembled by forming the These objects and the several novel features of end of one muntin bar as shown in Fig. 5 with a 35 the invention are hereinafter more fully described fiat groove 15 to receive the edge l6 of -the other and claimed and the preferred form of construcmuntin bar and this groove i5 is provided with tion by which these objects are attained is shown curved faces I! to fit the curved faces l8 of the in the accompanying drawing in whichother muntin bar. The muntin bar shown in 0 Fig. 1 is an elevation of a sash embodying my Fig. 5 is provided with extending ends l9 adapted invention. to fit into notches 20 provided in the ribs I2 and Fig. 2 is an enlarged section taken on line 2-2 l4 of the other muntin bar as will be understood of Fig. 1. from Figs. 4, 5 and 6. These ends l9 extend only Fig. 3 is an elevation of the assembled muntin half way through the rib 12 as will be understood bars to be positioned between the glass panes. from Figs. 3 and 4 and the muntin bars are as- 45 Fig. 4 is an enlarged section taken on line 4-4 sembled by providing two longitudinal bars ll of Fig. 3. and a series of transverse muntin bars 2| which Fig. 5 is a view of one of the muntin bars. are formed with the notched ends shown in Fig. 5.

Fig. 6 is a perspective view of the other muntin These muntin bars are assembled and glued tobar with which the muntin bar end shown in Fig. gether as shown in Figs. 3 and 4 and are then 50 5 is to be assembled. ready for installation in assembling the sash.

The sash is shown in section at the left of Fig. 2 One glass panel is first secured in position and and comprises a sash member i having an inthen the assembled muntin bar shown in Fig. 3 wardly extending rib 2 between the sides and havis placed within the plane of the rib 2 which exmg shoulders 3 and 4 formed on opposite sides of tends on the four sides of the sash and then the 55 other glass pane is assembled against the muntin bars. By this arrangement, the assembled muntin bars rest against the ribs 2 of the sash members an the glass panels contact the ribs I! and H of he muntin bars.

Thus, the assembled muntin bars space the glass panels apart and support the same and also divide the sash into a series of dead air pockets which provides insulation from heat ,and cold and is especially valuable for use with air conditioned buildings.

One or the principal objections to divided sash which are so popular in colonial type houses is due to the iact that it is a tiresome and careful job to wash the usual small panes of glass provided by the divided sash. With my construction, however, two smooth large glass panes are provided which may be verv easily washed in a small part of the time required to wash the usual divided sash glasses. Also, this smooth surface is provided on both the exterior and the interior and it is only these surfaces that need to be washed. My construction also overcomes the expense and labor of glazing the large number 01' small lights required in the usual divided sash of this nature. At the same time, the appearance of the sash is that of a divided sash both from the interior and the exterior of the building and the fact that the glass panes are on the outside of the muntin bars cannot be detected except upon very close inspection. By this construction, the muntin bars strengthen and support the glass panes and as the muntin bars act as reenforcements for both panes it will support the glass against considerable pressure and forms a'rigid unit which will resist breakage by wind storms, tornadoes, etc. Also, the number or small dead air pockets formed by the muntin bars gives greater insulating value in that the air has no space in which to circulate and transfer heat or cold from one pane to the other. By removal of one pane, the muntin bars maybe readily lifted out to allow cleaning of the insides oi the glass panes should it ever become necessary.

While I have described the muntin bars as being made 01' wood, they may also be made 01 hollow metal, extruded metal or metal tubing of the desired shape and of other materials practical for this use. In fact, any material may be used which may be enclosed between the glass panes and will have the appearance or muntin bars.

From the foregoing description it becomes evident that the device is very simple and efllcient in operation, will have the appearance of a divided sash without its disadvantages, provides an air sealed insulating sash and provides a device which accomplishes the objects described.

Having thus fully described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States is- 1. In a sash construction, a rectangular sash having an inwardly extending rib on each side, a pair of glass panes for the sash, a rubber channel extending about the edge oi each glass pane, the glass panes being positioned on opposite sides of the ribs with the rubber channels engaging the ribs, a series of spring flanges secured to each side of the sash and pressing the glass panes toward each other to provide a sealed air space between the glass panes and a series of muntin bars assembled together and positioned between the glass panes, the muntin bars dividing the sealed air space between the glass panes into a series of air pockets.

2. In a-sash construction, a rectangular sash having an inwardly extending rib on each side, a pair of glass panes for the sash, a gasket extending about the edge of each glass pane, the glass panes being positioned on opposite sides of the ribs with the gaskets engaging the ribs, a series of spring flanges secured to each side of each sash and pressing the glass panes toward each other to provide a sealed air space between the glass panes and a series of muntin bars assembled together and positioned between the glass panes, the muntin bars dividing the sealed air space between the glass panes into a series 01' air pockets.

JULIUS C. NEUENDORF.

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