US1913521A - Metal window sash and the like - Google Patents

Description

June 13, 1933.

H. SWISSLER 1,913,521

METAL WINDOW SASH AND THE LIKE Original Filed Aug. 17, 1929 2 Sheets-Shet 1 Q/WveWhT-i syerr/zafi 2,3276% Q Juhe 13, 1933.

H. SWISSLER 1,913,521

METAL WINDOW SASH AND THE LIKE Original Filed Aug. 17, 1929 2 Sheets-Sheet 2 UNITED STATES Patented June 13, 1933 PATENT OFFICE nEnMA iswIssLER, OF CHICAGO, ILLINoIs, AssIGNon To LoUIs BIEGL R coMI'ANY, 01' CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS Mn'rA wINDow SASH AND THE LIKE Application flledlugust 17, 1929, Serial No. 386,568. Renewed November 2, 1932.

This invention has to do with certain improvements in metal window sashand the like: 7 The improvements concern them- I selves particularly with the arrangement of seams whereby the sheet metal parts are secured together. I

1 Themain object of the invention is to provide a window sash having certain of the seams by which the metal strips are locked 0 together so formed and placed as to make it possible to materially reduce the vertical dimensions of certain of the horizontal rails of the upper and lower sash of the window.

In other words these features of the invention make it possible to materially reduce the amount of surfaceiexposure of the horizontal rails in which. the features of the invention are incorporated, with corresponding increase in the superficial area of. the glass or opening of the window sash. The amount of this increase of area due to narrowing of the horizontal sash rails is a very substantial percentageof the total and will in many cases amount to as much as 15-25 per cent increase in the glassed opening.

Another object of the invention is toprovide an arrangement of seams such that a maximum of strength and rigidity of the metal frame is produced. 1

A further object of the invention isto provide an arrangement such that the seam is brought to one of the edges of the sash where it is least objectionable. from the standpoint of visibility; and at the same time the bringing of the seam into this location makes it possible to. finish it by cementing and painting under conditions which are most advantageous for the complete elimination of any objectionable appearance due to the presence of the seam. I In order that the features of the invention may be-better understood and their significance and relevancy may be appreciated,

I will state that the abilityto produce a given seam'within a given location depends not merelyupon the form and size of the seam, but also depends upon its location and position with respect to other portions of the sheetmetalstructure. This is true because of the necessity of using dies and tools fbr breaking r bending the metal along a the desired lines, and these dies and tools requlre the presence of a suflicient amount of space to accommodate them and make it possible to manipulate them. For these M reasons a seam of a specified form and size may be produced with certain clearances with respect to other surfaces when located in one position, but may require greater clearances when located in a different position with respect to the same surface.

In the drawings:

Figure 1 shows a vertical section through a two sash window, the central portions of the upper and lower sash and; adjacent window casing structures being broken away to shorten the figure.

i the lower rail of the lower sash of Figure 1, on enlarged scale;

Figure 4 shows a horizontalsection taken substantially on the line 44 of Figure 1, looking in the direction of the arrows and it also shows a vertical muntin bar in the central portion of the upper sash; I

Figure 5 shows a fragmentary face view of the upper corner of one of the sash showing how the stile and cross rail are riveted together in the corner; and

Figure 6 shows a fragmentary section through the upper rail of the lower sash and the lower rail of an upper sash ofa previous type of construction in which the seam is located on the horizontal surface dow case including the sides 9 and 10, the sill 11 and the top 12.

Considering the bottom sash 7, the same includes the stiles 13 and 14, the top cross rail 15, and the bottomcross rail 16. Each of the stiles includes a sheet bent to establish the ogees 17 and 18 which are joined together at their inner edges by the U-shaped or grooved portion 19, which receives the edge of the glass panel 20. The edges of the sheet are then carried outwardly in the flanges 21 and 22 and are reentered or turned backwardly on themselves as shown at 23 and 24 to establish inwardly facing grooves. Another channel shaped sheet 25 has its edge portions turned outwardly and properly spaced and of proper depth to work in the channels 23 and 24. Consequently, when the flanges of the sheet 25 are slid into the groove portions 23 and 24, the two sections are effectively locked together into a hollow stile. Said edge portions may be soldered :or riveted or otherwise secured if necessary.

The bottom cross rail 16 is established .by

a sheet which is so folded as to provide the ogees 26 and 27 which are joined along their inner edges to establish a channel 28 to receive the lower edge of the glass pane 20. One edge of this sheet is then carried down and is refolded on itself to establish a [double thickness lip 29 along the inner lower edge :of the rail, and such refolded portion is again refolded along its upper edge as shown at 30 to establish an outwardly facing channel. A similar construction is employed at the outside face of the lower rail 16 to establish the tongue 31 of double thiclr ness, the upperedge portion of which is refolded .as shown at 32 to establish an outwardl-y facinglocking groove. A plate 33 has its edges'folded backwardly on :themselves to correspond to the grooves 30 and .32 so that said plate '33 may he slid into placeas shown in Figure 1 in order :to complete the construction .of the lower rail 16. :Said plate 33 may also %be soldered or riveted in place if necessary. The top cross rail 15 is established by a sheet which is so folded as to provide inner and outer ogees .34 and 35 respectively :between which there is established the channel portion .36 to receive the upper edge of the glass pane. The ogee '35 is carried out and then the sheet is turned upwardly as shown at 317 and is refoldec downwardly .as shown at 38 to establish a downwardly facing channel, the position of which is directly opposite to the upper portion of the channel 36.

Beyond the position of the other ogee 34 the sheet is carried upwardly as shown at 39 and then outwardly and downwardly as shown at 4O to establish a downwardly facing channel which is located directly opposite to the upper portion of the channel 36.

A top plate 41 has its inner edge reversely folded as shown at 42 and then carried downwardly and folded upwardly as shown at 43 so as to establish a locking groove and tongue portion which directly engages the portion 38 of the other sheet. The other edge of the sheet 41 is turned downwardly and then upwardly on a reverse fold as shown at 43 to establish air-upwardly facing channel to engage the edge portion 40 already referred .to.

The sheet 41 is slipped into place lengthwise with respect to the cross rail 15 and is simultaneously locked into the edge portions of the ogee shaped sheet; and if desired the two sheets may be soldered or riveted or otherwise secured together as necessary.

It will be noted that the flat portion of the sheet 41 may be laid directly againstthe top edge of the channel 36 as best shown in the detail of Figure 2. The channel 36 thus constitutes the limiting factor which determines the position of the sheet 41 in the sense that said sheetcan not be set any lower down without making the channel36 correspondingly shallower. Thus for a given dcpth of channel 36 the sheet 41 is at its lowest position when in contact with the channel. I

V The lockinggroovcs 43 and 38 are formed in a vertical direction and parallel to the plane of the glass pane 20. This brings the exposed joint or seal 44 along the corner or edge of the sash instead of along one of its faces. In such location said joint may be most easily and conveniently sealed by soldering or otherwise; and when so sealed the structure presents a practically perfect and continuous surface across the entire joint. Even when this joint is not sealed by soldering throughout its length, it is of such small and unobtrusive nature that the paint will itself practically seal the'joint and establish the continuity 20f the surfaces. At this point I wish to make reference to the construction shown in Figure 6 by way of comparison. The arrangement shown in Fig. 6 is substantially similar to that so far described with respect to my improved horizontal or cross rail 15 with the exception that the top plate 41 in Figure 6 is located a considerable distance above the channel 36 so that the vertical dimension of the cross rail 15 is correspondingly increased; Furthermore, in thelconstruction of Figure 6, the sheet metal plate is carried out beyond the position of the ogee 35 .and then up wardly and is then turned into a horizontal position before forming the channel 38 Likewise, the edge of the plate 41" does not have to be turned downwardly as shown at 42 in Figure 2; but on the contrary the channel 43 is placed inga horizontal direction so asto engage the channel 38 in the manner indicated in Figure 6. V

The differences of structure as between the arrangement shown in Figure 6 and the arrangement shown in the other figures is important and of a very definite nature as the following explanation will show; I

In order to form the channel 38 in the structure of Figure 6, which channel lies in a horizontal plane and above the upper edge of the channel 36, it is necessary to have a sufficient clearance between the inner edge of said channel 38 and the top edge of the channel 86 to make possible the use of a die of suflicient strength to do the work. This clearance can not possibly be established in the case of cross rails for window sash of the type shown in Fig. 6 except by raising the channel 3 8 a substantial distance above the elevation of the channel 36? and with corresponding increase in the vertical overall dimension of the cross rail 15.

On the contrary in the type of construction to which this inventon relates and as shown especially in the detail of Figs. 1 and 2, the necessary clearances can be established between the channels 38 and 36 to accommodate dies of suflicient mechanical strength to do the work even when the channel 38 is the channel 36 as shown in Figure 2 in particular. The reason for the above condition is readily apparent since the depth of the channel 38 or 38 is necessarily very much greater in amount than the thickness of said channel or the clearance between the folds of the sheet.

Because of the above condition I am enabled by placing the channel 38 on the vertical fold of the metal instead of on the horizontal fold thereof, to very materially reduce the vertical dimension of the cross rail and lower the plate 41 down to the position of the channel 86 which then becomes the limiting factor.

If desired a lock plate 45 may be set between the channel 36 and the fold 89 (see Fig. 2) and said lock plate is covered over by the sheet 41 when in place. The window lock is then screwed or otherwise connected to the lock plate 45.

In like manner ahandle plate 46 maybe a set into the lower cross rail to receive the sary rigidity in the sash itself. For this purpose the facing plate sections of the end portions of the stiles and cross rails are lapped as shown in Figure 5 and are then joined by rivets such as 47. In connection with the foregoing it will be understood that It is customary in the case of metal frame window sash to divide the glass into two or more panes or sectlons, the ad olningedges of which are connected togetherand supported by what are known asfmuntinbars.

Suchamuntin bar is shown at 48 in Figure 4. It comprises the inner and outersections ofsuita-ble construction which are connected and secured together byscrews 49 after the glass panes have been set into place. In setting the glass panes into place it is usually necessary to makeprovision in the top cross rail of the sash toallow the pane to be raised far enough so that'its loweredge can then be sctover and dropped down into the groove of the lower rail. This makes it necessary to provide the extra depth of the channel 36 shown in Figures 1 and 2; but

in any case the .plate41 may be set down againstthe top of channel by using the features of the present invention.

The glasspanes are puttied or otherwise cemented into place in the customary manner.

The upper-sash 8 is of construction simiand the features of invention of the joints may be used in the case of the sash 8. Thus for example, the joints 50 and 51 for the upper cross rail 52 and the joint 53 for the ,1- "1'05 more of such glass area.

VVlnle I have here n shown and described only a slngle embodiment of the features of my present invention, still I do not intend to limit myself thereto except as I may do so in the claim.

I claim:

A window sash including a horizontal cross rail formed from a pair of sheet metal sections, one of said sheet metal sections being folded to establish a central vertical pane receiving channel and being formed with ogee sections at the sides of said channel and being continuous across said channel, a flange projecting outwardly from the actually amounts in many cases to fifteen per cent or 1 edge portion of one of said ogee sections and lying parallel to the pane receiving channel and terminating in a reverse bend establishing a relatively thin locking channel at the inside face of said flange and lying parallel to the pane receiving channel, said locking channel being located substantially with; its extreme portion at least as close to the ogee section as the extreme portion of the pane receiving channel, a flange extending outwardly from the other of said ogee sections and terminating in a reverse bend establishing a relatively .thin locking channel at the edge of said flange and lying parallel to the pane receiving channel and with its extreme portion at least as close to the ogee section as the extreme portion of the pane receiving channel and a cover plate for said cross rail, said cover plate including a flat central portion adapted to extend over and inclose the side portions of the cross .rail, and lie substantially against the extreme portion of the pane receiving channel, both sides of said plate being provided with reversely folded locking channels lying at right angles to said cover plate and establishing outwardly facing relatively thin locking channels adapted to receive and engage with the locking channels first mentioned, substantially as described. I

HERMAN SVVI-SSLER.

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