US2760608A

US2760608A - Sash construction

Info

Publication number: US2760608A
Application number: US402669A
Authority: US
Inventors: Andrew T Hagerty
Original assignee: Adlake Co
Current assignee: Adlake Co
Priority date: 1951-01-26
Filing date: 1953-12-30
Publication date: 1956-08-28
Anticipated expiration: 1973-08-28

Description

Aug. 28, 1956 A, T. HAGERTY sAsH CONSTRUCTION 2 Sheets-Sheet l original File Jan. 26, 1951 IN VEN TOR.

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Aug. 28, 1956 A. T. HAGERTY sAsH CONSTRUCTION 2 Sheets-Sheet 2 Original Filed Jan. 26, 195] JNVENToR. dnafew Tfzcggerg,

Unite tates This invention relates to metal window constructions and is more particularly concerned with improvements in a lire underwriters window.

This application is a division of application Serial No. 207,979 led January 26, 1951, now Patent No. 2,672,- 960, dated March 23, 1954.

It is a general object of the invention to provide a double sash window which is fabricated of metal members assembled and connected together to provide a rugged construction and which will withstand considerable heat without apreciable buckling or separation of the members.

It is a more specific object of the invention to provide a window of metal frame construction which when glazed with wire glass will be sufficiently rugged to prevent a substantial blaze from penetrating the same and which will not be penetrated by any substantial amount of water from a conventional tire hose directed against it after it has been subject to such a blaze for a predetermined length of time.

It is a further object of the invention to provide a metal window construction formed of built up sections which are readily assembled and connected together in a simple and e'cient manner and with a minimum of manufacturing equipment.

It is another object of the invention to provide in a window of the type described having horizontal and/ or vertical muntins which muntins are fabricated from two plate sections, one of the sections being bent along axial lines to form a member which is T-shaped in cross section with the marginsA of the material forming the stem and with screw holes formed in the stem by separating the walls thereof to provide a circular shape and spot welding on each side thereof, the holes so formed being threaded to. receive retaining screws which secure the other plate section thereto, which other section is bent along axial lines to provide a member having a central longitudinal recess therein for receiving a marginal portion ofthe stem of the T-shaped section and having side flange portions cooperating with the top portions of the T-shaped section tol form therewith glass receiving chanel formations or glazing recesses.

It is another object of the invention to provide in a double sash Window a meeting rail for the upper xed sash which is fabricated from two bent plate sections, one section being formed to provide an outer member having a channel-like cross section with the margins of the plate material extending downwardly and inwardly along the side walls thereof and terminating in inwardly directed spaced angeformations intermediate the top and bottom edges of the side walls, and with the other plate section being formed to provide an inner member having a smaller channel like cross section with the margins of the material extending outwardly of the ends of the side walls and adapted to be positioned in juxtaposed relation with the inwardly directed marginal ange formations of the outer member and with clinched interlocking tongue and slot connections arranged therebetween to connect the members in assembled relation.

It is another object of the invention to provide a joint construction between the ends of the stationary meeting rail and a jamb which will' allow the rail to expand with heat and still be anchored solidly to the jamb.

vatent 'ice It is a further object of the. invention to, provide a re underwriters window which is economical to manufacture and which is also suiciently rugged to meet all the. rigid underwriters requirements.

These and other objects of the invention will be apparent from a consideration of the window construction which is shown by way of illustration in the accompanying drawings, wherein:

Fig. 1 is an elevation of a window construction embodying the principles of the invention;

Fig. 2 is a vertical section taken generally on the line 2-2 of Fig. 1 and to an enlarged scale;

Fig. 3 is a cross section of a horizontal muntin in assembtled condition with thev Section taken through one of the connecting screws;

Fig. 4 is a cross section similar to Fig. 3 at another point on the muntin;

Fig. 5 is an exploded perspective, view of the. members which form the muntin;

Fig. 6 is a transverse section through the bottom or meeting rail of the fixed sash;

Fig. 7 is a perspective view of a, length of the bottom or meeting rail; and

Fig. 8 is a section taken on the lines 8,-,8 of Fig, l showing the joint construction between the meeting rail and the jamb.

The window construction which isV illustrated in the `drawings is particularly adapted for use where there are substantial fire hazards and has embodied therein the principal features of the invention.

Referring to Fig. l, the illustrated window comprises a top sash 10 and a bottom sash 11, the top sash 10 being relatively xed with respect to thewindow frame and the bottom sash 11 being vertically movable relative thereto. The frame construction is characterized by side rails or jamb members 12, a bottom sill 13 and a top cross mernber or header 14, The various members of both the window frame and the sash f rarnesare lformed from metal plates or strips of relatively thin strong material such as stainless steel. Each of the frame members is fabricated from one or more plates by bending the plate material on lines extending along the longitudinal axis to form the desired structural cross section.

The side and top members of the, upper xed sash i0 are formed as an integral part of thefjambs A12 and top cross member 14 which constitute main. members of the window frame. The upper sash 1.0 also includes a hor-i.- zontal muntin 15 Iand a bottom cross member or meeting rail 16.

Each jamb lMember 12 is shaped to provide vertically extending inner and outer face plates 1 7 and 18y and a connecting web divided into three parallel offset

vertical portions

19, 20 and 2.1 which face inwardly of the window Opening and Connecting portions 2.2 and 2.3 which are parallel with

face plates

17 and 18 and, irl- .Spaced or other ,relation The margins of the connecting web4 are integral with

theface platesv

17 and 15 or are joined thereto' albng lines intermediate the vertical side ledges, thereof.

The inner face plate 17 and web portions 19 and 22 form a vertical recess for receiving a side guide channel 24 of U-shaped cross section which is secured therein in inwardly opening relation. The sidey guide channel 24 receives the side edges of the movable sash 11v on which there is mounted a channel-shaped weather strip 25.

An inside strip v26 of angle formation is attached to the vertical portion 21 ofthe web of the jamb in spaced relation to the face plate 1S andV forms with the inner marginal portion of the face plate 18 a recessI or glazing channel for receiving the side edge. of the, panes of glass 27 in the upper fixed sash 10.

The top cross member 14 of the window frame is formed to provide an upwardly opening channel-like sec tion with face plate forming inner and

outer walt members

28 and 29 and an integral connecting web portion 30 extending between the same. An inner strip 31 of angled section is secured to the web 39 in spaced relation to the outer face plate 29 and cooperates with the inner marginal portion of the face plate 29V to provide a glazing channel for receiving the top edges of the glass p-ane 27.

One or more muntins arranged horizontally (as shown in Fig. 1) or vertically (not shown) may be provided in either or both sash lil and 11. The Inuntins are fabricated from two strip or plate members of the desire length which are bent and connected together to form oppositely opening glazing channels for receiving the edges of the panes 27 in the sash. Each of the muntins 15 comprises inner and outer members with the outer member formed by reversely bending portions of a plate strip along longitudinal lines to provide a T-shaped cross section with a stem portion 32 and a head portion 33 which extends laterally on opposite sides of the stern portion. The head portion 33 and stem portion 32 are thus characterized by two thicknesses of the plate material with the edges of the plate material terminating at or constituting the free edge of the stem portion 32. At intervals along the length of the stem portion 32 the two margins of the plate material are separated to form a circular recess 34 which is internally threaded to receive a fastening screw 35. The stem portion 32 is preferably spot welded at 36 on opposite sides of each recess 34 to hold the plate material together. The inner member of the muntin is shaped to provide a central longitudinal- 1y extending recess 37 of channel-shaped cross section for receiving the marginal edge of the stem portion 32 of the outer member and laterally extending flange portions 38 at the sides of the recess forming portion. The flange portions 38 of the inner member are spaced from the top portion 33 of the outer member a snicient distance to provide oppositely opening glazing recesses for receiving marginal portions of the glass panes 27. The inner and outer members are secured together in glass receiving position by means of the connecting screws 35 which extend through suitable apertures in the inner member and are in screw-threaded engagement in the threaded holes 34.

The bottom or meeting rail 16 of the fixed sash 10 is fabricated from two elongate plate members 0r strips which are bent to form outer and inner members di) and 41. The outer member 40 is formed to provide a generally U-shaped channel section having outer side wail forming members 42 with the marginal edges of the plate material reversely bent within the channel and an edge portion thereof formed into inwardly extending opposed flanged members 43 located intermediate the top and bottom edges of side Walls 42 and having a substantial space between the inner extremeties thereof. The ini ner member 41 which constitutes the inner portion of the rail 16 is formed to provide a generally U-shaped channel section of somewhat smaller cross section than the outer member 4i) and having side wall portions 44 terminating in outwardly directed flange portions 45 which are adapted to be placed in overlapping relation with the inwardly extending anges 43 on the member 4b. The flanges 43 are provided with slots 46 at spaced points along the length of the rail 16 and the ilanges 45 are provided with punched out tongues 47 which in assembled relation extend through the slots 46 and are clinched to hold the inner and outer members in assembled relation with the side walls thereof generally parallel and spaced to form an outer glazing recess for receiving the edge of the glass pane 27 and a parallel inner recess for receiving a downwardly extending outer llanged portion 49 on the top cross rail or meeting rail 50 of the lower sash 11. The inner wall 42 of the meeting rail 16 is preferably provided at its upper edge with suitable weather stripping 51.

The meeting rail of the lower sash 11 is formed of one or more plate members or strips bent to provide a hollow rail formation of rectangular cross section having an inner inwardly extending glazing recess 52 for receiving the top edge of the glass pane 53 and a parallel downwardly or inwardly opening outer recess 54 which is formed between the downwardly extending ange 49 and an outer wall for receiving the upwardly projecting portion of the side wall 42 on the meeting rail 16 to provide a weather seal between the two meeting rails.

The meeting rail 16 (Figs. 2 and 8) is secured at its ends to the jamb members 12 by means of a solid connecting block 55 of aluminum or similar material which is of generally T-shaped cross section with the stem forming portion S6 projecting upwardly into the recess 5? dened by the top and side walls of the inner member d1 of the cross rail 16. The block 5S is close fitting but slidable within the hollow rail 16. It is secured to the vertical web portion 21 of the jaimb 12 by means of a pair of screws 58. With this construction the meeting rail 16 is rigidly connected to the jamb members 12 while at the same time it is free to slide on the rigid blocks 55 upon expansion or contraction of the rail in the lengthwise direction.

I claim:

l. In a double sash window construction which comprises a window frame having a fixed sash at one end thereof and a bottom cross rail on the end of said sash, said cross rail being formed of plate members bent to provide a hollow core at the end thereof, an end connecting block for said cross rail having a cross section corresponding to the cross section of the hollow core of said cross rail and having a portion at one end thereof positioned in relatively close fitting slidable relation within said hollow core at the end of said cross rail, and fastener members rigidly securing the other end of said connecting block to an adjoining vertical portion of said window frame.

2. In a Ldouble sash window construction which comprises a window frame having a fixed sash at the upper 'end thereof, said sash having a bottom meeting rail, said meeting rail being formed at the end thereof to provide a hollow core of generally rectangular cross section, a connecting member at the end of said meeting rail having a cross section corresponding to the cross section of the hollow core of said meeting rail and having an end portion thereof positioned in relatively close fitting slid- `able relation in the hollow core at the end of said meeting rail, and means for securing the opposite end of said connecting member in fixed relation to an adjoining vertical portion of said window frame.

3. In a window construction which comprises a sash frame having vertical side members and a transversely extending meeting rail, which meeting rail is characterized by la plate structure having a generally rectangular cross section and hollow open ends, which ends are arranged with their open faces confronting the inner faces of the vertical side frame members, a connecting member for joining the ends of said meeting rail to the side frame members, said connecting member having an external cross section substantially the same as the internal cross section of the meeting rail at the open ends thereof, said connecting member being positioned in sliding telescoped engagement in an end of said meeting rail, and means securing said connecting member in fixed relation to the adjoining side frame member whereby to rigidly connect the meeting rail to the vertical side frame member while permitting limited movement thereof in the direction of the longitudinal axis of said meeting rail.