US 2733788 A
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Description (OCR text may contain errors)
Feb. 7, 1956 G. FARMER 2,733,788
FRAME CORNER CONSTRUCTION Filed Dec. 27, 1951 2 Sheets-Sheet l INVENTOR. GEORGE L. fi RMER Ayi Feb. 7, 1956 e. L. FARMER 2,
FRAME CORNER CONSTRUCTION Filed Dec. 27, 1951 2 hee s- 2 INVENTOR. if GEORGE L EQRMER United States Patent" FRAME CORNER CONSTRUCTION George 1L. Farmer, Louisville, Ky. Application December 27, 1951, Serial No. 263,625
1 Claim. Cl; 189-76) This invention relates to preformed stockfor forming the frames of storm sashes-screens, and the like.
An object of this invention is to provide a stock member which can be used in forming either a screen or a storm sash.
A further object of this invention is to provide a stock member from which screen and storm sash-frames can be formed which are interchangeable. V
A further object of this invention is to'provide astock member which can be used for forming the cross bar of the frame of either a storm sash or a screen.
A further object of this invention is to provide means for joiningor securing such stock members at the corners of the frames of screens 'orstorm sashes;
The above and other objects andfeatures of the invention will in part be apparent and will in part be obvious from the following detailed description, and the drawings, in which:
Figure 1 is a perspective view showing a screen constructed from stock members which are formed in accordance with an embodiment of this invention;
Fig. 2 is a perspective view showing a storm sash constructed from the same stock members;
Fig. 3 is a perspective view showing a corner block used in joining stock members;
Fig. 4 is an enlarged-perspective'view showingdeta'ils of a joint between one side member and the cross bar of the screen illustrated in Fig. 1;part of the screen cloth being removed for clarity of detail;
Fig. 5 is a view'in section taken along a line 5--5 in Fig. 2;
Fig. dis a perspective view showing a sash holding clamp which forms a portion of the sash illustrated in Fig. 2;
Fig. 7 is a view in'vertical section showingthe sash illustrated in Fig. 2 mounted inassociation with a second sash; and Fig. 8 is a perspective'view showing a spring which forms a part of the sash illustrated in Fig. 2.
In the following detailed description and the drawings, like reference characters indicate like parts.
In Figure l is illustrated a screen 14 having a frame 15 formed of preformed stock members which are constructed in accordance with this invention. Frame 15 includes side members 16 and top and bottom members 17 and 18, each of which is formed from the same stock, the members therefor. being identical in cross section. The stock from which the members of frame 15 are formed is tubular, and formed from sheet metal.
Details of construction of one of the side frame members 16 are shown in Fig. 4. Since the top, bottom and side frame members are all formed from stock sections of the same construction as side frame member 16, only side frame member 16 will be described in detail.
Side member 16 is formed from 'a ribbon or strip of sheet metal bent to form a hollow tubular sheet metal member of rectangular cross section. One wall 26 of the member 16 is provided with a trough 27 offset inwardly into the hollow thereof at the joint between edges of the strip. The trough is formed of a U- or channel-shape. One arm of the trough is integral with the wall 26, while the other armthereof rests flatwise against wall 28 of the tubular member. Wall 28 terminates in a return bend or hook 29 which overlies andclamps the free edge or tongue 30 of trough 27. Moreover, wall 28 terminates short of the plane of wall 26 so that, when screen cloth 31 is clampedin the trough 27, the plane of the screen cloth'is just inside the plane of wall 26 of frame member 16. One edge of the screen cloth is held in place in trough 27 by a hollow tubular clamping member 32. Member 32 is formed of a resilient rubber-like material and clamps the screen cloth in place. As indicated in Fig. 4, hook 29 projects into the trough so that the neck of the trough is narrower than the lower portion thereof and the member 32 firmly clamps the screen cloth in place in the bottom of the trough.
Where a screen is to be formed which is sufficiently large to require two sections of screen cloth, the sections are separated by a cross bar 37, as shown in Figs. 1 and 4. As shown in Fig. 4, cross bar 37 is formed from a tubular sheet metal member of rectangular cross section. One wall 38 of the cross bar is provided with a pair of troughs 39 and 40 oliset inwardly thereof adjacent side walls 41 and 42, respectively. Troughs 39 and 40 receive edges of sections of screen cloth. In addition, a trough 43 is formed in wall 44 of the cross bar for use when the cross bar is assembled in a storm sash, as willbe described in greater detail hereinafter. Trough 39 is formed similarly to trough 27 of the side member 16 and is so constructed that book edge 45 thereof extends into the trough, and the top or neck of the trough is narrower than the base thereof. Side walls-4l and 42-terminate short of the plane of wall 38 so that the screen cloth received therein is held inside or below wall 38.-
Trough 40 is formed integrally with walls 38 and 42; At the juncture between wall 42 and the flange of trough 40 adjacent thereto is formed a bulge or bead 46 so that the mouth of trough 40 is narrower than the base, and screen cloth-can be firmly held therein. Trough 43 is formed in the same manner as trough 4-0 but is formed in wall 44 of the'cross bar.
The same stockmembers as are used informing the framework of screen 14 (Fig. 1 may, also be used in forming-the frameworkof the storm sash 47 illustrated in Fig. 2. In screen 14 (Fig. l) the members are disposed with their troughs facing forwardly. On the other hand, in the storm sash (Fig. 2) the members are placed with their troughs facing inwardly so that the troughs can receive panes of glassas indicated at 49 in Fig. 2. The
edges of the glass panes are received in the troughs. The: troughs may beprovided with sealing strips as indicated at 53 in Fig. 5, or with putty or other appropriate sealing material in the troughs to hold the panes of glass firmly in place.
The ends of the frame members at the corners of the screens and storm sashes are mitered and are held together by internal corner blocks 54, as indicated in Figs. l-3 and 5. Each of the corner blocks is of the construction illustrated in Figs. 3 and 5 and is made from sheet metal formed to provide arms or flanges 56 and 57 which project at right angles to each other and fit into adjoining ends of stock members to hold the members in assembled relation. Each arm is of U-shape in section, as shown in Fig. 5, and the arms fit tightly in the ends of the frame members with one leg of the U engaging the base of the trough in one frame member and the other leg of the U engaging the wall of the frame member in which the trough is formed (see Fig. 5). In addition, each arm is provided with a linear corrugation 58, as shown in Fig. 3, for purposes to be described more fully hereinafter, and transverse grooves 59. The transverse grooves are employed in locking the frame members upon the corner block. When the arms of corner block 19 are disposed inside the ends of adjoining members, the mitered edges of the ends of the members meet in a smooth joint as shown in Figs. 1 and 2. The frame members are held in place by lugs 61 (Fig. l). The lugs are punched or deformed from the material of the frame members after the frame members and corner blocks are assembled, and the lugs seat in grooves 59 in the flanges of the corner blocks.
The storm sash 47 illustrated in Figs. 2 and is received in channel-shaped guides, one of which is shown at 76 in Fig. 5. When in position in the guides, sash 33 is held in place by means of a spring 77. Spring 77, as shown in Fig. 6, includes two arms 78 and 79 which project as the arms of an inverted U. Arm 78 is disposed between corner block 54 and a wall 81 of side member 82 and is received in the groove 58 of one of the arms of the corner block. Spring arm 79, on the other hand, extends outwardly of the sash. A pull rod 83 is connected to spring arm 79 and projects through the walls of side member 82 to the inside of side member 82. The pull rod carries a finger grip 84 at the inner end thereof by means of which member 83 can be drawn inwardly to release the clamping action of the spring. When the clamping member is released, a clamping knob 86 at the head of rod 83 is held outwardly by spring 77 in engagement with guide 76, and, when the sash is advanced to proper position, knob 86 is seated in a well 87 in guide 76.
Sash 47 is also provided with a sealing strip 88 of spring metal or the like as shown in Figs. 2, 7 and 8. As shown in Fig. 8, member 88 is generally of C-shape in section, and extends around lower frame member 81 with an arm thereof engaging the lower wall of member 89 while the other arm thereof is seated in the trough of member 89. Member 88 serves to form a tight joint between sash 47 and another generally similar sash 91.
As shown, the stock members are generally of square cross section so that the screens and storm sash are interchangeable and both screens and storm sash may be constructed from the same stock members. In addition, the troughs of the side members are so constructed that the distance A (Fig. 5) between the base of the trough and the side wall parallel to the base of the trough is equal to the distance B from the inner flange of the trough to the wall parallel to the inner flange so that in any position of the block 54 in the side member, one flange of one arm thereof engages the trough to hold the corner block firmly in the side members.
Screens and storm sashes of various shapes and sizes can be formed from the stock sections of this invention, and it is only necessary to cut stock members to proper size and join them together to quickly and readily form storm sashes and screens of any desired shape or size.
The stock members disclosed above and illustrated in 4 the drawings are subject to structural modification without departing from-the spirit and scope of the appended claim.
Having described my invention, what is new and desired to secure by Letters Patent is:
A frame corner construction which comprises a pair of hollow tubular sheet metal members of substantially rectangular cross section, meeting ends of said members being mitred, one wall of each member having a trough offset inwardly into the hollow thereof along an edge of said wall, the other three walls of each of said members being substantially flat, the troughs of the members being in communication, .a corner piece having an arm disposed inside each of the adjoining ends, each arm of the corner piece being of channel shape in section, one flange of each arm being narrower than the other flange, the edge of the narrow flange of each arm engaging the trough of its associated member, the edge of the other flange of each arm engaging one of the walls of its associated member, the web and each of the flanges of each arm of the corner piece engaging flatwise one of the fiat walls of the member associated therewith, whereby the arms of the corner member firmly engage the tubular members to hold the tubular members in assembled relation, the web of one of the arms of the corner piece having a lengthwise groove therein to form a space between said one of the arms and the one of the flat walls associated with the web thereof, a spring member of U-shape having one arm received in said space and another arm overlying said one of the walls, said web of said one of the arms of the corner piece and said one of the flat walls of the member associated therewith having aligned openings therethrough, and a pull rod attached to the other spring arm and extending through said opening in said one of the arms of the corner piece and through said opening in said one of the flat walls of the member associated therewith for drawing the other spring arm toward said one of the members.
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