Metal window construction

Application filed July 16,

This invention relates to metal windows. Tlie principal objects of the present tion are to produce a strong, rigid, lightweight metal window of simple construc3 tion and pleasing appearance which can be cheaply manufactured; to reduce the number of parts of the window, and to provide for the easy assemblage of these parts to form window casing and sashes of accurate 10 dimensions and of such cross-sectional shape that they will readily accommodate metal weather strips and render easy the application of such strips thereto; to utilize parts of the same cross-sectional shape and dimen15 sions for most of the framing members ot . the windows of different types; and to provide members adapted to serve as combined window stops and screen supports for said windows. . . . .

The invention consists principally m the metal window constructions hereinafter shown and described; and it also consists in the parts and in the arrangements and combinations of parts hereinafter described 25 and claimed. . . ...

In the accompanying drawings which form part of this specification and wherein like symbols refer to like parts wherever they occur, ,. ,, ,

Fig 1 is a vertical cross-section through a metal window of the double-hung slidingsash type conforming to my invention;

Fig. 2 is a horizontal section through one side of the window frame and the adjacent 35 portion of the upper sash, the section being taken on the line 2—2 in Fig. 1;

Fig. 3 is a fragmentary side view ot one corner of the window frame, showing the manner of securing together at the corners 40 of said frame the adjacent ends of the tram-.

ing members thereof; .,

Fig. 4 is an edge view of said corner portion of said frame;

Fig. 5 is a vertical cross-section through a 45 window of the reversible ventilator type, the sash being shown partly open;

Fig. 6 is a horizontal section through one side of said window on the line 6—6 in Fig. 5, the sash being shown in closed posi50 tion; . , ,. ,, . „

Fig. 7 is a vertical section through a double casement window;

Fig. 8 is a horizontal section through one side of said window on the line 8—8 in Fig. 05 7; and .,, . ,,

Fig. 9 is a horizontal section through the

1,663,134

PATENT OFFICE.

ST. LOUIS, MISSOURI.

CONSTRUCTION.

1925. Serial No. 43,902.

meeting rails of the sashes of said double casement window.

Referring to Figures 1 and 2 of the accompanying drawings, the invention is il- «0 lustrated in connection with a window of the double-hung sliding-sash type. Said window comprises a window casing arranged for vertically sliding upper and lower sashes B and B¹, respectively, wooden 68 parting strips C and metal inside and outside stops or mouldings D. The window casing or frame A is made up of one-piece metal side, head and sill members. The side and top members 10 are of the same cross- 7® sectional shape and size, each of said members comprising side marginal flanges 11 connected by a web portion 12. The web portions of the framing members 10 are provided with grooves or channels 13, which 78 extend longitudinally from end to end thereof and are adapted to receive the parting beads or strips C.

The end faces of the side marginal flanges 11 of the framing members 10 are provided with undercut grooves 13' which extend longitudinally of said flanges from end to end thereof; and the webs of said members are provided at their middle portions with undercut ribs 14 which are disposed on the ⁸⁰flanged side of said web and extend from end to end thereof. Doubly-channeled sash weight boxes 15 have side marginal flanges 16 provided with undercut ribs 17 adapted to slidably engage the undercut grooves 13 ⁹⁰in the framing members 10 that form the jamb members of the window casing; and the webs 18, which separate the two channels, are formed with undercut grooves 19 adapted to slidably engage the undercut ribs 14 on said jamb members. By this arrangement, the members 10 and 15 can be readily assembled to form completely enclosed boxes for the sash weights and pulleys, lhe members 15 are preferably made from a single piece of sheet metal which is longitudinally folded to the shape desired.

The top and side framing members 10 ot the window casing A are also provided at their inner and outer corners with rectangular recesses or rabbets 19' adapted to receive the inside and outside stops or mouldings D which are removably secured in position by means of screws 20. The bottom frame or sill member 20' of the window casing A is of slightly different cross-sectional shape, said member comprising a sloping web portion, ® 1,6( a depending outer marginal flange and an upstanding rib portion adjacent to the ends of the inner margin of the other sill which serves as a stop for the bottom rail of the 5 lower sash.

The stops or mouldings D are shown in the form of metal strips of substantially Hshaped cross-section; that is, each strip is provided on each side with a channel, either 10 one of which is adapted to serve as a slide for a window screen (not shown). As shown in the drawing, one channel 23 of the strip, is of greater depth than the other channel 24 thereof; and the strips forming 15 the slideways for the screen are preferably ananged so that the shallow channel-of one strip faces the deep channel of the opposite strip. As the width of the screen is greater than the distance between the edges of the 20 opposing channel-shaped slideways, the greater depth of one slideway enables the screen to be readily placed in, position by placing one edge thereof in the deep slideway, and swinging the opposite edge in25 wardly towards the opposite shallow slidevay to clear the edge thereof. The screen may then be shifted laterally to bring said opposite edge into the shallow slideway ,. -J¹¹⁶ i^raming members 25, which form the side rails of the upper and lower sash B and B¹, are of the same cross-sectional size and shape. Each of the members 25 comprises side .marginal flanges 26 connected by a web portion. The outer marginal portions of the adjacent side marginal flanges of the upper and lower sashes are offset laterally away *^r.®m the parting bead C and are formed with integral undercut bead or rib portions 2fi which ^{extend from} t°P to bottom thereof «ο These undercut ribs or beads have a sliding nt in undercut grooves formed near one margin of resilient metal weatherstrips 29 whose opposite margins are clamped to the jamb members of the window casing by 45 means of the stop strips C. The grooved margins, of said weatherstrips are extended in the direction of the jamb members of the window frame to form a flange portion 30, which extends between the adjacent sides of ⁰ the parting strips and the walls of the grooves provided therefor in said jamb members. It is noted that this arrangement permits the sashes to be loosely fitted in the window frame while preventing draft and keeping out dust and water,

The framing members 31, which form the top rail of the upper sash and the bottom rail of the lower sash, are of the same crosssectional size and shape. Each of said mem^w bers comprises side marginal flanges 32 connected by a web portion, one of said side marginal flanges being shorter than the opposite side marginal flange and terminating in the laterally extended portion 32' which ^w projects toward said opposite flanges. The >3,134 lower or meeting rail 33 of the upper sash B comprises a framing member of substantially inverted channel-shaped section, whose inner marginal flange is provided with an upwardly extending flanged portion 34 7<> spaced away from said flange lar enough to accommodate the free end of a resilient metal weatherstrip 35. The top or meeting rail of the lower sash B¹ comprises a, channel-shaped member 36 whose, channel 75 is closed by means of a horizontal plate 37 whose inner margin fits in a groove provided therefor in the rear flange of the meeting rail. The outer margin of the plate 37 has a depending flange 38 which rests on so a shouldered portion of the outer marginal flange of the meeting rail and is removably secured thereto by means of screws 39. The weatherstrip 35 is clamped between the depending flange 38 of the top plate 39 and 85 a shoulder provided therefor in the front marginal flange of the meeting rail and is thus adapted to move with the lower sash when the same is raised and lowered. The framing members of the sashes have their 90 web portions offset to form rabbets adapted to accommodate the marginal edges of sash panes 39',. said panes being held in place, by putty, in accordance with common practice. _9g . As shown in Fig. 1 of the drawings, the ” joint between the top rail of the upper sash and the head member of the casino· and the joint between the bottom rail of the lower sash anil the sill member of said casing are mo rendered weather-proof and dust-proof by means of metal weatherstrips 37'. These metal weatherstrips preferably comprise reversely bowed side marginal flanges 38' connected by transversely curved or bowed web 105 portions. The strips are adapted to be sprung in the channels of the framing members 31 and have resilient sealing flanges or tongues 33' adapted to bear against the adjacent faces of the window frame and thus lie seal or close the joints therebetween. A great practical advantage of the construction just described is that it minimizes time and expense in applying the weatherstrip by eliminating the necessity of altering the 115 sash or frame and by enabling the strip to be readily applied without the use of separate fastening members.

At the corners of the window frames and sash frames, the adjacent ends of the side 12« flanges of the framing members thereof are beveled, and are disposed with their beveled ends in abutting relation. The web at one end of a framing member overlaps the adjacent end of the web of the other framing mem- 125 ber and is provided with apertures 40 adapted to receive tongues or fingers 41 which project from the end of said other framing member. The overlapping portion of the framing member that receives the extensions 130

1,633,134 flange of the other meeting rail is provided with an outwardly extending flange 50. The flanges 49 and 50 of the two meeting rails are adapted to overlap in the closed position of the sashes and thus cover the 70 joint therebetween. The metal weatherstrips 37' are sprung into the channels m the framing members of the sashes B⁴ and thus serve to weatherproof the joints between the meeting rails of the sashes and the 75 joints between said sashes and the window frame.

It is noted that the herein described arrangement permits a maximum number of framing members of the same cross-section- 80 al size and shape to be used with windows of different types and reduces to a ininimum the number of specially formed framing members required for each type of window. It also permits windows of different types 85 to be combined in the same opening by > using side and head framing members of the same cross-section, the shape of the sill member depending upon the manner of mounting the sashes.

It is also noted that the frame members of the sash and window frames are of such cross-sectional shape that they cannot, be formed by a rolling or pressing operation. However, these members are well suited for production by extrusion. By such process, the metal, which is usually heated to a fairly plastic condition, is forced under high pressure through an aperture of the shape to be produced. By resorting to this extrusion process, parts of unusual cross-section can be produced cheaply. On account of the high pressure under which the metal is extruded, its structure becomes more compact and its strength is increased. The surfaces ¹⁰⁵of said metal are smooth and free from flaws or other defects. The dimensions, of such extruded shapes can be gaged with, great accuracy so that they can be used directly . without additional finishing. The use of ^υextruded aluminum parts is preferable by reason of their light weight and their resistance to rust and corrosion.

Obviously, numerous changes may be made without departing from the invention ¹⁴⁰and I do not wish to be limited to the precise constructions shown.