USRE13720E - Edvard carlson - Google Patents

Description

B. GARLSON. I

SHEET METAL SASH AND DOOR. APPLICATION FILED APR 2,1913.

Reissued Apr. 28, 1914. 1 3,720.

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v exact description UNITED STATES PA TENT OFFICE.

IDVLRD OABLSON, 0F JAHESTOWN NEW YORK, ASSIGNOB 1'0 JAIFSTOWN SCREEN COMPANY, OF JAMESTOWN, NEW YORK, A CORPOBATION 0F NEW YORK.

SHEET-HETAL S ASH AND DOOR.

Specification of lelssued Letters Patent.

Reissued Apr. 28, 1914.

Original Ro- 1,005,509, dated October 10, 1911, Serial No. 825,124. Application to:- reissue fi ed April 2,

' 1913. Serial 80.758518.

To all whom it may concern Be it known that I EDVARD'CARLSON, a subject of the King of Sweden, residing at Jamestown, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Sheet- Metal Sashes and Doors; and I do hereby declare the followinfg to be a full, clear, and will enable others skilled in the art to which it a pertains to make and use the same.

T liis invention relates to certain improvements in sheet metal sashand doors' The main object is to produce a hollow sheet metal sash, with a mrniinum number of parts which may be economically con--' structed and assembled in such-manner asto produce a. light, strong and durable frame capable of firmly retaining in place a screen, glass or other panel.

Another object is to provide means whereby the panel-retaining strips will more firmly retain the screen or other panel in operative position and. at the same time allow such strips to be more-easily and quickly replaced in operative position or removed. without displacing, destroying or otherwise mutilating any of the parts of the a frame.

Other objects and uses will be brought out in the following description.

In the drawings'Figure 1 is a perspective view of a. portion of the frame and screen therein. Fig. 2 is an enlarged perspective view of a small portion of the main body of the frame. Figs. 3 and4 are fragmentary perspective views of the screen retaining strip and the closing strip. Fig. 5 is a detail perspective view of a portion of the closing strips for one of the side rails.

Referring to the drawing, the numeral -1' designates in general a continuous hollow frame consisting of bottom, top and side rails formed from a strip of thin sheet metal bent in substantially U-shape cross sectional formation with its open side facing outwardly. The free edges of the sides of the rails are bent inwardly at 2 and interlocked at 3 with the returned edges of a closing stri 4. The central lengthwise portions o the closing strip for the upright side rails are pressed outwardly formthe invention, such as rails and also the ribs 7 and ing hollow ribs 4' guides of an ordinary window rame or casing. The inner sides 5 of the rails of the frame are pressed outwardly. to form lengthwise recesses -5 and opposite inwardly projecting parallel ribs 7 and 9 formin the opposite sides of the recess fi'i', t e depressed inner sides 5 of the rails running parallel with their respective closing strips or tie pieces 4- for engagement in the The inturned outer edges of the hollow 9- serve to reinforce and to stiffen the hollow rails against buckling and permits the use of com aratively thin sheet metal which is easi y bendable to the desired form.

The ribs 7 and 9 are spaceda sufficient distance apart to receive between them the edge of a screen 10 or other panel and a suitable retaining strip 11 shown more clearly in Figs. 1 and 3, the

portion of the rib being offset laterally from the recess. 5" to form a groove 6- for a purpose hereinafter described. The inner edge of the rib 7 is disposed in a substantially flat vertical plane to form a rest or abutment against which the adjacent portion of the screen is held by the retaining strip 11.

The rib 9 forming one sideof the recess -5-'is disposed to the 0 en side of the groove 6 and forms an a utment to hold the retaining strip -11 in looking engagement with the screen.

The retaining strips 11'extend from end to end of the inner edges of the re spective rails, said strips being substantially U-shape in cross section, thereby forming flanges 12'and 14- which are disposed at an angle with each other and are connected by a relatively narrow web 13- disposed at substantially right angles to the flange 12. The transverse width of the flange 12 is slightly greater than that of the open inner side of the recess 5 into which it is adapted to be inserted with the web 13- in contact with the inner face of the rib 9 thereby causing the opposite edge of the flange 12 to project into the groove G. The transverse width of the angular flange 14- is slightly less than the corresponding width of the recess -5- and adapted to press the screen or other panel firinlyngainst the opposing face of the rib -T- when the retaining strip is placed in operative position.

The opposite sides as -8 and --8- of the hollow' rails forming the frame -1 are substantially parallel. transversely and longitudinally, the rib -9 being integral with the inner edge of the side S, while the rib 7- is integral with the inner edge of the side -8-,- thus permitting the remaining portions of the sides to be extended outwardly and transversely any desired width for various sizes of sash and doors.

It will be seen that the inner side of the rib -7 and flange lelof the retaining piece 1l converge inwardly from the sides of the rail at an angle of substantially 45, thereby bracing these portions of the frame againstlat-eral strains and at the same time giving to characteristic appearance.

The screen as -10 is stretched tightly across the opening in the frame from side to side and from end to end with its edges projecting into the recess -5-- and against the inner sides 5- of the rails so as to lie across the open sides of the grooves -6.

The retaining pieces 11 are then placed in operative position under pressure sufficient to force the flanges -12- against the screen into the grooves 6-, until the webs -13 are firmly engaged with the ribs 9-, the pressure of the flanges 12- against the edges of the screen tending to draw such edges across the flanges 7 and into the grooves -6 so as to additionally tighten the screen. During this operation of inserting the retaining pieces 11 in their holding positions, it will be seen that the pressure of the flanges -12- upon the edges of the screen is transversely of the frame or rail and at substantially right angles to the rib -9 so that the tension upon the edges of the screen is opposed by said rib tcnding to hold the retaining piece in operative position. The retaining piece -11- is sufficiently resilient or spring-like to enable it to be sprung into position and when in operative position, the inner edge of the flange -14 will approximately coincide with the corresponding edge of the rib 7.

It will be seen from the foregoing description that in tightening the screen in the frame, the retaining strip 11- will have to be forced or sprung into the recess --5- between the ribs 7- and 9 and by this act will not only firmly tighten and hold the screen but will also be self-retaining by reason of the lateral pressure exerted by the screen upon the retaining strip tending to hold itiirmly against ,the rib It is evident, however, that these the frame a neat and strips may be easily removed by inserting a suitable tool such as a screw-driver between the rib and adjacent web 13- so as to spring the intermediate portion of the strip inwardly a sufficient distance to disengage it from said rib, thereby allowing the strip to be withdrawn laterally and at the same time freeing the screen. In like manner other panels, suchas glass or wood may besecurely fastened in the frame by the retaining strips 11 although in such cases the edges of the panel might be allowed to rest upon the flanges 12. That is, in inserting the retaining strips, the flanges -12 would be forced across the edges of the panel until the webs 13 were engaged with the ribs 9-, .the flanges -1iserving to engage the panel under yielding pressure to force it firmly against the rib -7.

, Vhat I claim is:

1. A'device such as described for securing the edge of a sheet of fabric within a frame,

and consisting of a continuous hollow frame formed by pressing a strip of thin metal in substantially U-shaped crosssectional formation, the free edges of said frame being bent inward and interlocked with the edges of a closing strip, the bottom of the U-shaped frame pressed inwardly to form a recess, the bottom of which is substantially parallel to the closing strip, one side of this recess extending into a groove, the other side depressed slightly below the upper edge of the upright side of the frame, thereby forming a lip, the edge of the fabric placed in this recess, and a closing strip adapted to be retained within the recess by its spring action, and consisting of a strip of thin metal having a horizontal section slightly narrower than the recess formed in the frame, a vertical section formed on one side, the uppenpart of which is bent inwardly at approximately 15 to register with the upper edge of the frame, substantially as and for the purposes set forth.

2. A hollow sheet metal rail for sash and door frames having its inner edge depressed beyond the corresponding edges of its sides to form opposite lengthwise ribs and an intervening recess, one ofthe ribs having its inner edge oiiset laterally toward the other rib to form a lengthwise groove opening into the recess, and a retaining strip insert ed in the recess and provided with laterally divergii'ig flanges for engaging-and retaining the panel in the recess.

3. A sash or door comprising a hollow sheet. metal frame provided with a recess in its inner side, a rib forming one side of the recess and an additional rib forming the other side of the recess and overhanging a portion of the same, in combination with an angular retaining strip having one side interposed between said ribs and its other side extending across said recess into substantial registration with the edge of the opposite rib, v

4. A hollow sheet metal rail for screen frames bent in U-shape form and having its closed edge depressed beyond the adjacent edges of the sides to form opposite ribs and an intervenin recess, a screen retaining piece inserted 1n the recess between said ribs and having one side'engaged with one of the ribs and provided with diverging flanges extending toward the other rib.

5. A hollow sheet metal rail for screen frames bent in U-shape form and having its closed edge depressed beyond the adjacent edges of the sides to form opposite ribs and an intervening recess, a screen retaining piece inserted in the recess between said ribs and having one side engaged with one of the ,ribs and provided with diverging,

flanges extending toward the other rib, and a closing piece connecting'the opposite edges at the open side of the rail.

6. A rail for screen frames having its inner edge rovided with a central lengthwise recess an lengthwise ribs at opposite sides of the recess, the open side of the recess be-- ing narrower than its base, and a screen retaining strip having diverging flanges united by a web bearing against the inner side of one of the ribs, one of said flanges being disposed in the wider portion of the recess and its other flange projecting across the narrower open side of the recess.

7.A hollow sheet metal frame for sash and doors having lengthwise ribs and an intervening recess along its inner edge, one

of the ribs having its inner edge offset laterally toward the other rib to form an overhanging, portion, a panel in said recess and an angular retaining strip having a portion extending under said overhanging portion and another portion extending outwardly from said recess.

In witness whereof I have hereunto set my hand on this 14th day ofMarch 1913 EDVARD CARLSON.

\Vitnesses:

F. B. WORDEN, D. E. BURKE, H. M. ANDERSON.

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