US336819A - Manufacture of grass-hooks - Google Patents

Description

(No Model.)

G. NOLIN.

MANFAGTURB 0F GRASS HooKs. Navi-"$86,819. Patented Feb. 23, 1886,

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UNITED STATES PATENT OFFICE.

GERVAIS NOLIN, OF SKOWHEGAN, MAINE.

MANUFACTURE OF GRASS-HOOKS.

SPECIFICATION forming part of Letters Patent No. 336.819, dated February 23,1886.

Application filed July 22, 1884. Serial No. 138,496.

To aZ whom it may concern,.-

Beit known that I, GERVAIs N oLIN, a citizen of the United States, residing at Skowhegan, in the county of Somerset and State of Maine, have invented certain new and useful Improvements in GrassIIooks, of which the following is a specification, Vreference being had therein to the accompanying drawings.

My invention relates to the manufacture of sickles or grass-hooks; and the object of the present instance is to devise a process whereby a sickle or grass-hook can be made from sheet-steel of generally uniform thickness, and by machinery without forging or other handwork, except in grinding the edge, and consequently can be made more cheaply and formed more perfectly than by any other process of which I am aware.

My invention further relates to the grass hook as an article of manufacture.

In the accompanying drawings, Figure l shows the blank. Fig. 2 shows the blank after the first operation on the same. Fig. 3 shows the blank curved. Fig. 4 shows the blank curved and grooved at the back. Fig. 5 shows the tang by which the blade is attached to the handle. Fig. 6 shows the tinished device.

rIhe details under Figs. 3, 4, and 6 are crosssections of the blade in the several states of manufacture.

In the process of manufacture the platesteel, of generally uniform thickness, is first cut by proper machinery into Strips A, as in Fig. l. These are slightly wider at one end than at the other, so that by turning the sheet of steel each time a blank is cut oft' the metal can be cut without waste. In the next step a small piece is cut by proper machinery from the side ofthe blank at each end, and this gives the blank the appearance shown by A in Fig. 2. The blank is then put into a machine and bent along the line of its length into a curved shape, as shown in Fig. 3, and in the detail cross-section under it. It is next put into a press, and by means of suitable dies a groove, a, is formed along its back edge, as shown in Fig. 4 and the detail under it. The holes b, for securing the blade to its tang, are

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also punched at the proper moment. TheV blade as thus made is then properly ground at its edge c, and it is then ready to be attached to its tang D, and finally secured to the handle E. It is not absolutely necessary that the edge'grinding shall be done till the blade is attached to its handle. The groove or corrugation along the back edge is of great value in affording the necessary stiffening to by cutting its edges, bending said blank into a curved shape, and finallyforming a stiffening groove or corrugation along its back edge, all substantially as described.

2. As a new and improved article of manufacture, a grass-hook blade made of a single piece of metal of uniform thickness, except at its cutting-edge,"a11d bent or curved in the direction of its length in sickle or hook shape, and having a concave-convex back, all substantially in the manner and for the purposes described.

3. ln combination with the blade A, made of a single piece of metal of uniform thickness. except at its cutting-edge, and bent or curved in the direction ot' its length in sickle or hook shape, and having a concaveconvex back, the tang D, and handle E, substantially as and for the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GERVAIS NOLIN.

lVitnesses:

J. IV. MCDERMID, FRANK A. NoLIN.

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