US116372A - Improvement in dies for forming beefsteak-cutters - Google Patents

Description

Unirse STATES PATENT @Trice HORACE THOMPSON, OF CONCORD, NEW HAMPSHIRE.

Speeiiioation forming part of Letters Patent No. 116,372, dated June 27, 1871.

T0 all trimm t may concern:

Cutters; and I do hereby declare that the following is a i'ull, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this Specification, in which- Figure 1 is a rear view ot' my improved dies, partly in section through the lower die, through the line y y, Fig. 5. Fig. 2 is a detail view ot a part of one oiA the cutters. Fig. 3 is a top view of the lower die. Fig. 4 is a detail view ot' a part of one ot' the cutters. Fig. 5 is a vertical crosssection of the two dies taken through the line a:

x, Fig. 1.

Similar letters of referenceindieate corresponding parts.

My invention consists in an improved construction of dies, as hereinafter fully described, and subsequently pointed out in the claim.

Al A2 is the lower die, in which, near its forward side, isformed a longitudinal slot, al, ot' the length and breadth of the back of one ofthe cutters to be formed. a2 are cross-slots leading from the slot a1 toward the forward side of the die A1, said cross-slots being of a length and breadth equal to the length and breadth of the teeth ofthe cutters, and at a distance apart equal to the breadth of said teeth. The lower die is made in two pieces or parts, Al A2, the plane of division being the rear side of the slot el, and the faces of said parts being iiush with each other. a3 is a flange or stop extending along the rear side of the face of the die A1 A2, and across said face, near one end, as shown in Figs. 1, 3, and

5, in such positions as to serve as a stop and Y gauge to the steel plate when fed in. B is the upper die, in the rear side of which are formed cross-slots b1, ot' a depth and breadth equal to the length and breadth ot' the cutter-teeth, and at a distance apart equal to the breadth ot the said cutter-teeth. The i'aee ot' the die B is cut away, leaving the lower end of the metal b2 between the slots bl and a continuous piece, b3, ot'a breadth equal to the breadth oi' the back ot' the cutter C, projecting below the rest ot the said taee to enter the slots el a? ot' the lower die in cutting or punehingthe steel plate to torni the cutters C. 'lhe cutting-tace b2 b;3 ot' the upper dieI or punch B is rounded, as shown in Fig. 1, so that it may begin to cut in the center and shea-r each way toward the ends. D are guide-pins to keep the upper dienin proper position when descending. E are rubber blocks attached to the end part-s of Ythe lower die A A1 to prevent the dies from striking dead, and also, by their elasticity, to start the die when the pressure is removed and it be gins its upward movement. 'By making the lower die in two parts or pieces, A1A2, as shown in Figs. 3 and 5, the ent-ire work of cutting the dies may be done by pla-ning and milling-machines, so that the expense ot' cutting the dies will be greatly diminished. By this construction of the dies two cutters will be cut from the steel plate at each descent of the upper die, one of said cutters passing down through the die A1 A"l and the other passing up through the die B, the entire plate being thus out up without any waste ot' material.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The dies A1 A2 t1 a2 a and B b1 b2 b3, constructed and operating substantially as herein shown and described, and for the purposes set forth. HORACE THOMPSON.

Witnesses:

CHs. S. SMART, S. B. HADLEY.

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