Metal window-frame.

Application filed November 13,1914. Serial No. 871,922.

To all whom it may concern:

Be it known that I, Orla H. Iman, a citizen of the United States, residing in the city of Chicago, county of Cook, and State g of Illinois, have invented certain new and •useful Improvements in Metal WindowFrames, of which the following is a specification.

My invention relates to improvements in 10 metal window frames and refers more particularly to a type of metal window frame which is factory-formed and assembled and m which certain parts of the structure may be disassembled readily for shipping pur15 poses.

Among the salient objects of the invention are, to provide an improved construction of window casing which will permit of certain parts being readily removed or disengaged 20 from the other parts of the window and

Fig. 5 is an enlarged fragmentary detail of a portion of Fig. 2;

Fig. 6 is an enlarged fragmentary detail view of one of the parts shown in section in Fy?·. ⁵ > . 60

,. ¹ y?· L^{IS a} fragmentary plan taken on the line .7—7 of Fig. 3;

Fig. 8 is a section of Fig. 3 taken on the line 8—8;

Fig. 9 is a view of a portion of Fig. 2 65 looking in the direction of the arrow 9; . Fig. 10 is a fragmentary detail view showing several of the parts in Fig. 5, and

Fig. 11 is a cross-section taken on the line 11—11 of Fig. 10.

Referring to the drawings, it will be seen that as a preferred embodiment of my invention I have shown its application to a standard double-hung window having a pair of vertically sliding sashes overlapping m the middle of the casing. In the drawings 11 represents the window casing as a whole, 12 the upper outer sash and 13 the lower inner sash. Referring to Figs. 2 and 3, it will be seen that the outer casing 11 is pulley weights, and also made hollow at the top in order to provide a space for the pulleys. Referring to Figs. 2 and 3, it will be noticed that the inner vertical sides 14 of the casing, which in an ordinary window would be the pulley stiles, are continuous from the top to the bottom of the window and are each made in a single piece. As shown in Fig. 2, the two sashes are between inner and outer hollow abutments 15 and 16 which extend vertically upward at the edges of the sashes from the top of the window to the bottom. The stiles 14 of the window frame are made removable and separable from the main body of the frame casing 11 and are held in engagement with the casing by a plurality of adjustable screws 17 which pass through the fixed hollow abutments 15 and 16 of the outer frame of the casing. Said abutments 15 and 16 are formed with inwardly projecting flanges 18 which are adapted to overlap mutually coacting outwardly projecting flanges 19 formed at the side edges, of the stiles 14. The screws 17 screw into small threaded plates 2'0 which are slidably secured upon plates 21 riveted to the inside faces of the stiles 14. · The threaded plates 20 are slidably secured upon the plates 21 so as to enable the screws 17 to :

parts being readily removed or disengaged from the other parts of the window and frame in order to effect removal of the sashes, pulleys, etc.; to provide an improved construction whereby the pulleys may be supported by the fixed portion of the window frame casing and not by the pulley ...... _{OCC11 VUit}„ _{uie UULer casin}„ _{M 1S} stiles; to provide a construction whereby the formed hollow at the sides to receive the pulleys may be located wholly above the ‘ ¹¹ ' ’ ' ’ upper edge of the sashes and within the upper portion of the window frame casing; to provide an improved construction whereby the pulleys may be removed for inspection or repair with a minimum of effort or delay and without danger of mutilating or marring any of the parts of the window; to provide in general an improved construction and arrangement of instrumentalities whereby-all of .the above objects may be attained with a minimum of expense and in a simple and efficient manner, and, in general, to provide, an improved simple, efficient and economical construction of the character referred to.

My invention consists in the matters hereinafter described and more particularly pointed out in connection with the accompanying drawings, in which—

Figure 1 is an elevation of a double-hung window embodying my improved construction;

. Fig. 2 is a section of Fig. 1 taken on the line 2—2, the lower sash being raised;

Fig. 3 is a section of Fig. 1 taken on the line.3^-3;

Fig. 4 .is an enlarged fragmentary detail of a portion of Fig. 3;

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105

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1,222,293 £ accommodate themselves to slight inaccuracies of fit, and to this end are each furnished with a pair of elongated slots 22 through which pass a pair of shouldered 5 flat-head pins 23 riveted into the plates 21.

The length of the shouldered portion 24 of the pins 23 is equal to or slightly in excess of the thickness of the threaded plate 20 so as to permit the latter to slide thereon. 10 The ends of the screws 17 obviously are not threaded into the plates 21 but pass freely through slots 25 formed therein. In order to prevent the accidental escape and loss of the screws 17 I provide in each of the screws 15 a transverse pin 26 secured therein behind the walls of the hollow abutments 15 and 16, permitting slightly more space .between the heads of the screws and said pins than the thickness of the metal of the abutments 15 20 and 16 so as to allow the screws to turn freely and without hindrance. The said pins are tightly driven into the screws 17 before the latter are inserted in the casing, and in order to permit the insertion of said 25 screws with the pins thei’ein, the walls of the abutments 15 and 16 are punched out with a key-hole slot 27, as shown in Fig. 6. The pins 26 also serve another purpose— which is to prevent the screws from being 30 forced outwardly through the abutments 15 and 16, and thus the stiles 14 are at all times maintained at their proper position in the casing regardless of whether the sashes are in place or not. It should be noted 85 that in order to prevent the pins 26 from escaping through the key-hole slot 27 under normal conditions, the screws are always left in the position shown in Fig. 2 with the slots in the heads in a vertical position at 40 right angles to the axis of the pins vyhich thus occupy a position at right-angles to the line of the slots 27 in the abutments 15 and 16. . _;

Upon inspection of Fig. 2 it will be 45 noticed that there are no weather strips, parting beads or window stops in .my construction, as the functions of all of the last named parts are fully and efficiently performed by interlocking the vertical sides of 50 the sashes and the stiles 14 together in the following manner. As shown, each of the stiles 14 is formed with two pairs of inwardly extended folded ribs 28 projecting at right angles therefrom and which enter cor55 responding grooves 29 formed in the edges of the hollow sash frames; these mutually co-acting ribs and grooves thus holding the two sashes at the proper distance, from each other and also forming an effective lock or ¢0 closure against the entrance or passage of air and moisture between the edges of the sashes and the sides of the casing. In order to prevent entrance of air or moisture between the top and bottom of the window <5 casing and the adjacent edges of the upper and lower sashes I insert between the sashes and the casing an upper weather strip 30 and a lower weather strip 31, secured to the casing, and each formed from a piece of resilient brass or other similar metal. The strip 30 is struck up in channel shape with its flanges folded back upon each other and adapted to spring apart slightly and engage mutually co-acting grooves 32 constructed in the upper edge of the top sash. The lower ₇₅weather strip 31 is Z-shaped, having one of its flanges constructed in a double resilient fold, as shown at 33, which enters, a corresponding groove 34 formed in the lower edge of the bottom sash, and the other flange g₀of the said strip 31 is turned down and resiliently engages a downwardly projecting double thick folded flange 35 formed in the lower outer edge of the said bottom sash.

These improved weather strips are very effi- 85 cient, practically indestructible, extremely neat in appearance and very simple and economical to manufacture, install and maintain in operation.

For the purpose of preventing entrance of qq air and moisture between the overlap of the two sashes, the latter are constructed with serpentine interlocking flanges 36 and 37, as indicated in Fig. 3, these forming a very effective joint or closure, as will be readily 95 understood from an inspection of Fig. 3. .

As indicated in Fig. 8, the cords or chains 38 are attached to the tops of the sashes, as shown at 39, and pass over pulleys 40 which are supported in brackets or reversed .stir- 100 rups 41, as indicated in Figs. 3 and 8. These brackets 41 rest upon the upper rail 42 of the window casing and are rigidly secured thereto by means of screws 43. These screws 43 are of the ordinary flat-head variety and 105 are seated in conical depressions 44 punched through the under side of the hollow rectangular ribs 45 in the under side of the said rail 42. In order to prevent bending of the relatively weak thin metal of the parts 110 41 and 42,1 insert U-shaped stiffening members 46 around the said screws and resting in the said rectangular channels 45. It will be noticed that the top rail 42 extends beyond the stile 14 only for a distance sufficient 115 to support the bracket 41, a space thus being left between the end of the said top rail 42 and the outer wall of the window casing, as indicated in Fig. 8. The purpose of this is to permit the removal of the bracket sup- 120 porting the pulleys whenever it is desired, to inspect or repair the latter. To accomplish this, the flat-head screws 43 are removed and then the bracket carrying the pulleys may be moved toward the outer wall.of the casing 125 and drop down between the said outer wall and the projecting end of the top rail 42. It is obvious that in order to effect this removal of the pulleys, the distance between the end of the member 42 and the outer wall 46 of 130

Masses the casing must be greater than the diameter of the pulleys, and, in addition, the stiles 14 and parting strips 47 must be first removed, as will now be explained.

5; Referring to Figs. 2, 8 and 9, it will be noticed that the parting strip 47, which separates the weights in the weight-box, is furnished with a right-angle flange 48 which is perforated with a key-hole slot, as shown 10 in Fig. 9. The upper-reduced end of this key-hole slot is engaged by the head of a shouldered pin 49 which is securely riveted into the outer wall 46 of the casing, the length of the shouldered neck on said pin be1δ ing equal to or slightly greater than the thickness of the metal of the member 47, thus permitting the latter to be pushed upwardly until the head of the said pin or rivet 49 registers with the enlarged lower portion of 20 the said key-hole slot, enabling the parting strip 47 to be removed bodily. It is of course understood that there are a plurality of the key-hole slots and pins 49 in order to maintain the parting strip 47 in proper 25 alinement. Before the members 47 or the pulleys and their brackets can be removed, it is manifest that the stiles 14 must first be removed, which is done as follows. After first unscrewing the screws 17 so as to dig30 engage them from the members 19, the stiles 14 may be .pushed back into the weight-box a sufficient distance to disengage the projecting ribs 28 from the grooves 29. The window sashes may then be dis35 engaged and removed in an obvious manner which removal permits the stiles 14 to be taken out bodily, thus giving access to the members 47, if desired. It should be understood that in most cases where it is de40 sired to remove one or more of the gashes it is necessary to disengage the stiles 14 on one side only ; but if.it is desired to remove one of the stiles 14 in order to gain access to the weights, cords, or pulleys, the inner 45 sa’Sh of the window must be entirely removed. The parting strip 47 projects from the wall 46 of the casing only a sufficient distance to prevent interference between the weights in the weight-box and terminates a 50 sufficient distance from the plate 21 to permit the latter to be moved toward it far enough to disengage the ribs 28 from the grooves 29 in the sashes.

Since the pulleys for the cords or chains are located entirely above the top rail 42 of 55 the casing, it is rendered unnecessary to furnish side grooves in the edges of the sashes to receive the ends of the cords or chains, which latter are in my improved construction attached directly to the tops of the 60 sashes. This feature eliminates a prolific source of trouble caused by the breaking of the sash cord and its falling down into the groove between the sashes and the casing. The entire frame and sash construction be- 65 ing. of metal, there is no possibility of the various parts warping, getting out of shape, or sticking, due to the action of the elements, and the result is a construction having a very long life and exceptionally easy 70 to maintain and keep in repair. The sashes, parting strips, side stiles and pulley mechanism all being removable, renders it a very economical construction to pack and ship.

It is manifest that my construction is ca- 75 pable of being modified to some extent in certain, of its structural details without departing from the spirit of the invention, and consequently I do not limit myself to the precise arrangement shown, except as 80 specified in the appended claim.