US1362599A - Shears - Google Patents

Description

E, BUELL. SHEARS. APPLICATION FILED JAN. 31. 1920.

1,362,599. 'Patentgd Dec. 21,1920. v

UNITED STATES PATENT v c rn ce.

EDGAR 31mm, or onmron, connnc'rrcu'r.

SHEABS.

To all whom it may con-0cm Be it known that I, EDGAR 'BUELL, a citizen of the United States of America, residing at Clinton, Connecticut, have invented a new and useful Shears, of which the following is a specification.

My invention relates to improvements in shears, and is of particular utility in connection with heavy shears designed to cut tough material such as sheet metal.

The object of my invention is to provide a construction whereby such shears can be used in cutting a long or wide sheet of metal, the construction being such that the two opposite edges of the slitted metal will clear the shears so that the latter may be advanced through the metal without interruption and without the necessity of bending to one side the material at one side of the shears to afford clearance of the latter.

Inthe drawings:

Figure 1 is a plan view of my invention embodied in one type of shears.

Fig. 2 is a side elevation thereof.

Fig. 3 is a front end view thereof (the blades being open).

Fig. 4 is a perspective view of adetail.

In the preferable form, 1 represents the upper blades. 2 represents the lower blade. The blade 1 is provided with a rigid rearwardly extending handle 3. This handle where it joins the blade is so constructed as to form in effect a guide frame for support ing the blade 2. The blade 2 is provided with a laterally ofiset upwardly projecting arm 4-. which, as shown in the drawings, is guided in a slot in said frame portion of handle 3. The upper end of this arm 4 is connected by a pivot 5 with a lever 6 pivoted to the said guide frame at 7. This lever 6 constitutes the operating handle for the lower blade 2. When the handles are open to the position indicated in dotted lines, the two blades 1 and 2 will stand apart ready to receive the material to be out between them. When the handles 36 are moved toward each other the cutting edges of the blades 1 and 2 will co-act and sever the-material to be cut in the usual manner. *When'the metal is severed, the shears are advanced for another cut and it will be noted that, by reason of the offset 4 for the blade 2, the severed material on the lefthand side of the shears may freely clear the side of the shears to the rear of the edge of the blade 2, and pass under the handle 3. So also on the opposite side of the shears,

Specification of Letters Patent. Patented Dec, 21, 1920 Application filed January 31, 1920. Serial No. 355,429. I

shears constructed in this manner may be advanced step by step through a sheet of any width or length without interruption and without interference. The value of this construction is not only manifest when the shears are being used to cut flat metal, but

they may be successfully used to cut metal in other shapes; for example, a stovepipe may be cut off true and accurate at any point in its length. 8 is an adjusting screw carried by one side of the frame adjacent to the guide slot in which the arm 4 moves. This screw furnishes one simple and effective means for adjusting the two blades so that they will cooperate properly. simply turning down the screw, the inner end will engage withthe side of the arm 4, and press the blade 2 toward the blade 1, so that the edges will cooperate with the proper cutting action.

Obviously the form of the handles may be varied at will as well as the method of connecting the same to the blades.

I claim:

1. In a pair ofshears, an upper blade with a handle rigidly connected thereto, the connecting portion being .enlarged to form a guide frame for the other blade, a lower blade having a laterally offset upwardly projecting arm arranged to move in the aforesaid frame, a second handle in the form of a lever pivoted to a portion of said frame and connected to said arm for moving the lower blade relatively to the upper blade, the offset portion of the lower blade afford: ing clearance to permit slitted material to pass freely in a rearward direction relatively to the rear end of the edge of the lower blade.

2. In a pair of shears, an upper blade having a rigid handle including a guide frame where the handle meets the blade, a

lower blade having an extension operatlng in said guide frame, a lever-handle pivotally mounted on said guide frame and operatively connected with said lower blade extension to move the lower blade relatively to the upper blade, the lower blade being offset from said extension to afford clearance to permit slitted material to pass freely in a rearward direction from the rear end of the edge of the lower blade.

3. In a pair of shears, an upper blade having a rigid handle including a guide frame where the handle meets the blade, a lower blade having an extension Qperating insaid guide frame, a lever "handle "pivotally mounted on said guide frame and operatively connected to said lower blade extension to move the lower'blade relatively to theupper blade, the lower blade being Offset from said extension tomfiord elearance'itp permit slitted material to pass freely in a rearward .idirection from the rear end of 10 the edge'efthelower blade, and an adjust- -ing device carried by said guide frame and coacting with the lower blade to vVary the degree of pressure between the eutting' I edges ofthe respectiveblades.

' EDGAR BUELL.

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