US1235241A - Window-screen. - Google Patents

Description

M. S. POTTER.

WINDOW SCREEN. APPLICATION man sEPT.22.1914.

Patented July 31, 1917.

Q o a UNTTED STATES PATENT OFFICE.

MILES s. POTTER, 0E sYRAoUsE, NEW YORK.

WINDOW-SCREEN.

To all whom t may concern.'

Be it known that I, MILES S. POTTER, a citizen of the United States, and resident of Syracuse, county of Onondaga, State of New York, have invented an Improvement inv Window-Screens, of which the following description, in connection with the accompanying drawings,is a specification, like letters on the drawings representing like parts. Y

My invention has two principal objects, viz:'to save frame metal, and to save wire cloth; my aim being to secure both of these objects without sacricing strength and rigidity of the screen, firmness and permanency, but to provide a screen which is/just as practical and advantageous as the old screens, and yet much less expensive in materials, more simple to make, less liable to corrosion (not having so many bends and recesses to hold moisture), and lighter in weight. To these ends I have devised the wire screen whose preferred embodiment is illustrated in the accompanying drawings, in which- Figures 1 and 2 are broken perspective views of complementary portions of the screen taken at the corners thereof to show r as much of the construction as possible;

Figs. 3 and f1 are similar cross sectional views of the two portions shown in the precedingl figures;

Figs. 5 and 6 are fragmentary plan views of the blank from which the respective frames are bent up, these figures showing the shape to which the blank is cut; and

Fig. 7 is a cross sectional view to'show the old construction and thereby illustrate the saving effected by the new construction.

Referring to Figs. 1, 3 and 5 which illustrate that portion of the frame which may be referred to as U-shaped, for holding the other portion whichmay be referred to as L-shaped, I provide a strip 1 of metal, usually steel or iron, yhavingopposite notches 42 and 3, and this is bent longitudinally along the lines 4, 5 to form the top flange 6 and the bottom flange 7 respectively, the edges of the notch 2 coming together to abut tightly against each other as indicated at `8, and the edges of the notch 3 coperat-l ing in `the same manner while the body of the metal strip is bent at right angles along the line 9 to form the corner of the peripheral `body portion between the edges 4, 5.

Specification of Letters Patent.

Patented July 31, 1917.

' Application led September 22, 1914. Serial No. 862,909.

The extreme edge of the member 7 is bent over along the line 10 to form a smooth, neat flange or strengthening rib 11. A frame formed simply thus would, of course, be somewhat frail, but I have discovered that by crimping the wire cloth 12, tightly into the inner edge of the holding members 6 throughout the entire length-of said members, the wire supplements the frame so that the two brace each other, with the result that great rigidity and strength ensue. In carrying this out, I bend the free edges of the members 6 back underneath the latter along the lines 13 and place against the underside of these bent back portionstheedges of the wire cloth 12, which edges are thereupon tightly clamped by bending the free edge of the metal strip around, under, and outwardly along the lines 14 until the wire is clamped tightly in this S-shaped bend, the extreme edge 15 of the metal strip being preferably further deflected toward the wire-cloth to clamp the latter with a crimping grip and tend still further to stretch the wire cloth. The wire cloth is preferably held under slight tension by a clamping device and is in accurate position facture, I do not show the mechanism for making it.

The complementary portion of the screen which is shown in Figs.'2, 4 and 6 is formed in substantially the same way, except that there is no provision for forming a flange 7,

but instead thereof, the lower edge of the strip is simply bent upwardly all around to form a flange 16.

From the foregoing description it will be understoodthat the rigidity of the screen is mainly secured by having an integralA corner 9 formed in the frame members perpendicularly to the frame of the screen proper, or wire cloth 12, and members 6, 6

wise extremelylight and neat. If the parts 1 I are japanned, they are more or less soldered or stuck together by the japannmg material, but the crimping, or' folding, of the frame screen was quite complicated and expensive and is best shown in Letters Patent 794,470 of July 11, 1905, which construction the present invention aims to supplant. In said patented construction, besides a more or less complicated system of cutting, bending and` interlocking parts, it was considered necessary, in order to hold the wire cloth properly, to bend the frame strip lengthwise at its middle 17 and back upon itself as shown in Fig. -7, the wire cloth 18 entering between the opposite free edges, or leaves, 19, 20 of this fold, and extending thence to the fold, or edge, 17. Comparing this construction with my present invention, it will be seen that, aside from the avoidance of the various otherA complications of construction, I

have succeeded in saving about 5% of the screen material, or wire cloth, and 20% lof the metal strip material, and yet, by reason of the corner construction and the specially stii edges, my improved screen is practically as stiff as the other one. It has all the requisite rigidity, permanency and adaptability. VLikewise, the wire cloth is always held taut and the frame cannot get askew.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A wire screen, having a metal frame provided with wirecloth holding members arranged to hold the wire cloth at their inner edges, and a peripheral body portion supporting said holding members and a corv ner bent perpendicular to the plane of the wire cloth, said inner edges of the holding portions being bent in S-shape and clamped immovably onto the adjacent edges of the wire cloth. v l

2. A wire screen, having a metal frame provided with wire-cloth holding members 'arranged to hold the wire cloth at their tains the wire cloth, said peripheral portion having a right angle bend at the corner to constitute an integral corner perpendicular to said plane, and holding members extending integrally inward from one edge of said peripheral portion abutting in one and the same plane at said corner and provided with clamping bends at their inner free edges for embracing and gripping immovably the wire cloth, and a piece of wire cloth set at its edges into said clamp-ing bends and permanently crimped and immovably gripped thereby.

In testimony whereof, I have signed my name to this specication, in the presence ofy two subscribing witnesses. Y

MILES S. POTTER.-

Witnesses:

GEORGE R. WEBB, EDWIN P. CHAPMAN.

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