US296719A - Process of forming shovels - Google Patents

Description

(No Model.)

E, A. BARNES. v

PROGESQ 0F FORMING SHOVELS. 01%. 296,719. v Patented Apr. 15, 1884.

i I Yw iy i I A w Nirs Srn'rns AiiINT tries.

ELMORE A. BARNES, OF PITTSBURG, PENNSYLVANIA.

SPECIFICATION fm'mirlg part of Letters Patent No. 296,719, dated April 15, 1884.

Application filed September 17, i883. (Nomodeh) described and claimed a method of forming shovel-blanks in a single piece by first casting an ingot with a socket'parting or cavity therein 5 then rolling the ingot down to a uniform thickness about double the ultimate thickness of the blade; then completing the blank, so as to rc-enforce it over the handle-socket by inserting it between revolving; rolls from the dis- -,charge side thereof, the said rolls having recesses for forming the re-euforced portion of the blade, and one or both rolls having cutaway portions to furnish space for inserting the blank on the said discharge side thereof. The said method of forming shovel-blanks is excellent in every respect, and very superior sh ovels are madethereby in perhaps the cheapest possible manner. I have a means, also, of first forming the blanks ready for rolling different from that described in the said Letters Patent,which means also produces ultimately avery superior shovel, though the entire process is not quite so economical as that, yet superior in this respect, also, to other methods of making shoveis heretofore in use. By my presout method I forge or partly roll and forge the blank preparatory to the final or regular rolling, and forge the piece in such a way as to form a socket cavity or parting, and at the same time to connect the upper ends of the strap part, since these parts would not keep in proper position while rolling if they were entirely separate.

block extended 5 and Fig. 5, an edge view of the Fig. 4 is a side view of a forged some with the two ends doubled together, showing a way of prod ucing the form ready for ro1ling diiferent from that represented in Figs. 1, 2, and 3.

Like letters denote corresponding parts in all the figures.

The manipulation of the block beingrequired to be such as to form a socket parting or cavity and to unite the upper ends of the strap parts, I accomplish these results, according to the views shown in Figs. 1, 2, and 3, by forging or rolling the main or blade part A of the block in one solid piece of proper dimensions; then drawing out into narrower form the strap part B, as seen in Fig, 1; then splitting the strap part edgewise into two parts, I) b, Fig. 2, and punching a cavity, a, in the upper end of the blade part A, between the strap parts B B, as shown in Figs. 1 and 2; and, finally,welding together the upper ends of the strap parts B B, as seen at o in Fig. 3; or the strap parts B B may not be separated at the upper ends when they are split apart. Also,any variation in the order of the manipulations above stated may be adopted with out departing from my invention; or any unessential departure from the method described may be adopted, provided the ultlmate result is as herein set forth.

According to the manner indicated in Figs. 4 and 5, the block is forged or rolled with the blade partin two portions, A A, Fig. 4, at the two ends of the bar, and the narrower and thinner part B in one continuous portion between these two end portions. The bar is then doubled over endwise, thus bringing the two parts A A together, one lying closelyupon the other, as shown in Fig. 5, and tying the two strap parts B B, Fig. 5, at the bond 0. The socket cavity or parting is provided for in this way of forming the block by making depressions a a in the bar, as seen in Fig. at. Then, when the ends of the bar are doubled together, these two depressions are brought opposite to each other and form the socket-cavity. Finally, the two parts A A are welded togetheraround this socketcavity. Any unessentia-l variation from this way of forging may be adopted without departing from my invention. The principles of the two methods of forging above specified are substantially the same, and with the same result in both. cases. The blocks prepared as above are then rolled, first, between plain rolls to reduce them to auniform thickness double the required thickness of the shov el-blade; then put between special rolls, with re-enforcing depressions and feed notches or openings therein, in the same manner as specified in the aforesaid Letters Patent.

The shovels are preferably made of caststeel; but they may be made of blister-steel, semi-steel, or of any proper material.

I claim as my invention 1. The process of forming shovels which consists in first forging a block of metal of suitable form and thickness to produce the required shape and size of rolled blade-blanks, with a socket parting or cavity therein, then rolling the said block to a uniform thickness double the required thickness of the shovelblade, or thereabout, andthen completing the blade-blank by inserting it between revolving rolls from the discharge side thereof, to reduce the same, the said rolls having recesses for forming the re-enforced portion over the socket of the blade.

2. The'improved process of forming shovels which consists in first forging a block of metal of suitable form and thickness to produce the required shape and size of rolled blade-blank, with a socket parting or cavity therein and the upper ends of the strap part united. then rolling the said block to a uniform thickness double the required thickness of theshovel-blade, or thereabout, and then completing thebladeblank by inserting it between revolving rolls from the discharge side thereof, to reduce the same, the said rolls having recesses for forming the re-enforced portion over the socket of the blade.

In testimony whereof Ihave signed my name in presence of two witnesses.

ELMORE A. BARNES.

\Vitnesses:

O. T. THOMPSON, CHAS. W. HUGUELY.

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