US2768670A - Sheet material bending machine - Google Patents

Description

Oct. 30, 1956 M. w. EVERTON SHEET MATERIAL BENDING MACHINE Filed March '7, 1952 5y r y ATTY United States Patent SHEET MATERIAL BENDING MACHINE Melvin Waldron Everton, Burley, Idaho Application March 7, 1952, Serial No. 275,388

1 Claim. (Cl. 153*16) This invention relates generally to the bending or shaping of metal material and is directed particularly to improvements in machines for bending woven or welded metal screening or netting.

A principal object of the present invention is to provide an improved machine for forming bends in woven or welded wire netting such as is commonly employed for forming fences or in the construction of pens for confining animals, more particularly in connection with the raising of fur bearing animals such as mink, chinchillas, rabbits and the like, wherein the bending of such netting may be accomplished easily and quickly to form a clean accurate angle without at the same time making the angle so sharp as to cause the breaking of the metal at the bend.

Another object of the invention is to provide a machine of the character stated wherein cooperating elements are provided to function in a novel manner for effecting the firm clamping or holding of the netting while the same is being bent to the desired form.

A further object is to provide, in the manner hereinafter set forth, a novel machine for bending wire netting of the character stated which is of relatively simple construction and consisting of a material supporting table having a clamping jaw for securing the material thereon, together with a bending jaw which, after the material has been firmly clamped, is movable to a position whereby the material is bent against a face of the clamping jaw to impart the desired angular form to the material.

Other objects and advantages of the invention will become apparent as the description of the same proceeds and the invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawing forming a part of the specification, with the understanding, however, that the invention is not to be limited to the exact details of construction shown and described since obvious modifications will occur to a person skilled in the art.

In the drawing:

Figure l is a view in front elevation of the machine of the present invention, a portion of the same being in section.

Figure 2 is a view in top plan of the machine.

Figure 3 is a tranverse section taken substantially on the line 3-3 of Figure 1.

Referring now more particularly to the drawing it will be seen that the bending machine of the present invention comprises a pair of spaced, fiat end wall plates and 12, the plate 10 to be hereinafter referred to as the head plate and the plate 12 as the foot plate for convenience in locating the various part of the machine, although such head and foot or end wall plate-s are of the same form.

Each of the end wall plates has a generally rectangular lower portion 15 and includes at its back edge, an offset upper rectangular portion 14 and disposed between the end wall plates at the rear edges thereof is the elongate angle beam which is generally designated 16 and which is positioned to have one flange horizontally disposed to 'ice form the wire netting supporting table 18, with the other flange 20 vertically disposed and joined at its ends along the lower portions =15 of the vertical back edges of the end wall plates as is clearly shown in Figure 3. The upper surface of the table 18 is disposed slightly below the upper edges of the lower portions 15.

Extending inwardly from each of the end wall plates 10 and 12 are two vertical guide plates 22 which are spaced apart transversely of the table 18 as is clearly shown in Figures 2 and 3.

Overlying the top of the table 18 and positioned between the two pairs of guide plates 22 is the elongate jaw member which is generally designated 24 and which, as shown in Figure 3, is of substantially U-shaped cross section, having the vertical upwardly directed webs 26 and the bottom connecting web 28 which isin opposed relation to the top surface of the table 18.

Each end of the channel member forming the jaw 24, has the closing end wall 30 and rising from and forming a part of the top of each end wall is the rectangular box or yoke 32.

Also formed integral with each end wall 30 and extending longitudinally therefrom is a vertical guide flange 34 which is slidably positioned between the adjacent pair of guide plates 22 for guiding the jaw in up and down movement with respect to the underlying table.

Extending longitudinally of the machine above the jaw 24 is an eccentric shaft 36 which has its ends extended through the end wall plates 10 and 12 as shown in Figure l and which also passes through the yokes 32 carried at the ends of the jaw.

At the foot end of the machine the shaft 36 has a suitable element 38 fixed thereon to prevent endwise movement of the shaft in one direction while at the opposite end the shaft has fixed thereto upon the outer side of the adjacent wall extension 14, the collar 40 carried at the inner end of an operating lever 42.

Fixed eccentricaly to the shaft 36 are the two eccentric members or cams 43, each of which is positioned within an eccentric yoke or frame 32 whereby upon the turning of the shaft and the cams desired up and down movement is imparted to the jaw 24 for the purpose of securing tightly upon the top surface of the table 18, the screen wire netting or fabric, not shown, which is to be bent.

Positioned forwardly of and in a plane below the clamping jaw 24 is the bending jaw which is generally designated 44 and which also preferably comprises a suitable length of angle iron material as shown in Figure 3. This bending jaw is positioned between the end wall plates 10 and 12 and at each end it has extending longitudinally therefrom at the angle between the work flange 45 and the downwardly directed flange 46, the pivot pins or pintles 47 1tltvhich extend through suitable apertures 48 in the end wa 8.

At one end of the machine the bending jaw work frame 45 has secured thereto against the underface thereof, an end of a lever arm 49.

As shown in Figure 3, when the lever arm 49 is swung down to a horizontal position the bending jaw 45 will also be in a horizontal plane and will have its top surface substantially in the same plane as the top surface of the table 18. Such plane is, of course, below the bottom of the work engaging face of the web 28 of the gripping jaw as shown. Also the pivots 47 are in a vertical plane slightly forwardly of the front face of the jaw 24 so that the Working surface of the bending jaw 45 when swung to a vertical position and parallel with the vertical front Web 26 of the clamping jaw will be suitably spaced from the clamping jaw for the thickness of the material being worked upon.

It is believed that it will be readily apparent from the foregoing that in the use of the machine the wire netting or metal cloth is slid across the top of the table 18 belowa the jaw 24 until it is in thenproper position for bending along a predetermined line, which line will be in the plane of the forward face of the clamping jaw. The clamping jaw 42 is then swung over in the proper direction to force the jaw down so as to firmly clamp the netting upon the surface of the table. The bending jaw lever 49 is then forced upwardly so as to also turn up the portion of the screen netting lying across the top surface of the bending jaw, causing the netting to be bent around the forward bottom corner 50 ofthe clamping jaw which is rounded slightly as illustrated so as to avoid giving a too sharpbend to the wire netting which might result in the breaking of the same. After the netting has been bent in the manner stated it can be easily removed by releasing the clamping jaw 24 by drawing it forwardly over the top of the bending jaw 45.

I claim:

In a sheet material bending machine, a pair of flat end plates, each having a lower rectangular portion and an upper rectangular portion offset from the upper portion of the rear edge of the lower portion, a flat sheet supporting table having a straight front edge and extending between and connecting the lower end portions of the upper portions of'said end plates, the upper surface of said table lying in a plane slightly below the plane of the top edges of the lower portions of said end plates, a flange depending from the front edge of said tableand extending between and connecting the rear edges of the lower portions of said end plates, a vertically movable jaw of substantially U-shape cross-section and having channel closing end walls, said jaw being positioned between the upper portions of said end plates above said table, said jaw having cooperative guide members between the upper portions of said end plates and the adjacent end walls of said jaw, and a bending jaw extending between and pivoted to the lower portions of said end plates.

References Cited in the file of this patent UNITED STATES PATENTS 131,239 Adler Sept. 10, 1872 141,329 Cozzens July 29, 1873 474,283 Belding May 3, 1892 793,728 Mackall July 4, 1905 942,440 Danforth Dec. 7, 1909 1,402,801 Schott Jan. 10, 1922 2,160,441 Peters May 30, 1939 2,521,840 Fennell Sept, 12, 1950 FOREIGN PATENTS 10,668 Great Britain May 9, 1902 161,949 Germany July 7, 1905 23,158 Great Britain Oct. 10, 1912 757,197 France Oct. 9, 1933

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