US45198A - Improvement in the manufacture of sheep-shears - Google Patents

Description

H. WENDT 8v H. SEYMUUR. SHEEP SHBARSg No. 45,198. vPemtemted Nov. `2b, 1864.

.understood that we do not intend to claim UNITED STATES XlpjiaTnNT Genion.

HERMANN WENDT AND HENRY SEYMOUR, OF ELZABETH, NEW JERSEY.

IMPROVEMENT iN THE MANUFACTURE OF SHEEP-SHEAPLS.

Specification forming part of Letters Patent No. (15, 19S, dated November T22, 1884.

v.To a/ZZ whom irl may concern,

- Beit known that we, HERMANN VlfnNnT and HENRY SEYMOUR, both of Elizabeth, in :the county of Union and State of New Jersey,

have invented anew and useful Improvement in the Manufacture of SheeplShears; and we do hereby declare that the following is a full, clear, and exact description thereof', which will enable those skilled in the art to make and use the saine, reference being had to the accompaning drawings, making a par-t of this specilication, in whichy Figure l is a plan view of the rolled sheetiron` blank out of' which the frame is made. Fig. 2 is a plan view showing the appearance ofthe 'frame after it has been swaged into shape, with the rough blade-pieces attached, prior to welding; Fig. 3, a perspective view 4of one of the shanks or blade-holders and rough blade-blanks prior to welding; Fig. 4, a side elevation of blade back piece with at tached stop, Figf, a side elevation ot' t-he finished shears.

ln the ordinary process of manufacturing sheep-shears one method is to make them Wholly of a single piece ot' steel, hammered or forged out into proper shape by hand and then finished by grinding and polishing. This is a very slow and costly method and is rarely practiced. We mention it here that it may be broadly, the making ot' sheep shears of one piece of metal.

The method which is ordinarily practiced is to make the spring bow-ot' steel and attach it to iron blade shanks or holders by rivets or other fastenings. This method is compara,- tively slow and expensive, andthe steel spring is liable under use to become loose or detached yfrom its rivets, and the shea-rs are thus rendered soon worthless.

The object of our invention is to improve, simplify, cheapen, and quicken the whole process.

We make the spring and blade shanks in one piece of metal, of good rolled or hoop iron of the proper width, and cutit into a suitable length, as shown in Fig. l, which represents a blank. This blank is now heated and placed in a swaging press, whereby at one blow of.

the hammer or drop it is converted into the form shown in Fig. 2, in which A is the spring and B B the blade Shanks or holders,the latter bent into semi-tubular form.

The cutting-blades are composed of separate pieces or.blanks C D, of rolled=or sheet V metal. The blank C (shown in Fig. 4) is composed of sheetir'oa and forms a portion of the back of the blade. Each blank C has at its rear end a projection or ear, a, and these cursa aform the usual stops employed to prevent the blades from passing' each other. In the ordinary process otl manufacture these stops or ears a. a are made ot' separate pieces ot' metal welded upon the rear ends of the blades.

. After the blank has been swaged into the forni shown in Fig. 2, the back blade-blanks,

O, are placed one in each of the tubular cxtremities of the blade-Shanks B B, as shown in Fig. 3, and against each blank C thus arranged, but outside ot' the tubular shank, a face or cutting-edge blank, l), similar in form to the blank (E, (except that it has no stop a and is made of steel,) is now placed, as shown in Fig. 3, so as to t'orm acutting-i'ace ot' steel, and lboth of said blanks, together with the shank-ends, are temporarily cemented and subsequently welded into a compact mass or cutting-blade.

The blades are finished by grinding and polishing upon stones in the ordinary manner, and when completedthe face ot' each cutting-edge is composed of sheet-steel, backed by the iron plate C, both being held by the shank B, and all united, as shown in Fig. 5.

At'ter the blank has been Ys'waged up, as before described, and represented in Fig. 2, the part A, which is to form the. spring', is hamv` mered out so as to condense and harden the metal. This hammering also renders the part A wider, and likewise imparts to it a sufficient degree ot' elasticity to render it a good and durable spring.

The subsequent operations of polishing, tempering, setting the blades, and iinishing are done in the usual manner, and no particular description thereof` is necessary.

Having thus described our invention, we-

claim as new and desire to secure by Letters Patent- As a new article of manufacture, the sheepshears hereinbefore described, consisting of the back A and blanks B B, swaged in one piece, the iron blade-plates C C, straps a a, and steel blade-plates D D, all constructed and combined in the manner and for the purposes specified.

. HERMANN WENDT.

Witnesses: .Y lHENRY SEYMOUR.

STANLEY G. Mason,I GEORGE M. SEYMOUR.

Images