US1296235A - Method of manufacturing pick-mattocks. - Google Patents

Description

s. T; TYLER.-

METHOD OF MANUFACTURING PXCK MATTOCKS.

- APPLICATION FILED APR.2B.1917- 1,296,235. Patented Mar. 4,1919.-

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S. T. TYLER.

METHOD OF MANUFACTURING PICK MATTOCKS'.

APPLICATION FILED APR.28. 1911..

1,296,235. Patenteii Mar. 4,1919.

2 SHEETS-SHEET 2- WITNESSES INVENTOR.

V ATTORNEY.

\ nrrnn STATES PATENT omuo SAMUEL "r. TYLE OF'WHEEIJING, -wEs'r VIR INIA, ssmnoa 'ro-wnnwoonroon COMPANY, 0FWABWQOEWHEELINGyWEST "VIRGINIA; A CORPORATION or W ST VIRGINIA.

To all whom it may concern: V

Be it known that LnSAMUEL T. TYLER, a citizen of the United States of-America, and resident of Wheeling, county of Ohio, and State .1 of Virginia, .have invented certain new and useful Improvements in Methods of Manufacturing Pick- Mattocks, of which the following is a specification.

This invention relates to a method of pr ducing pick mattocks, and it has for its object to provide a method of forging tools of that type in which a mattock blade and a pick are disposed at opposite sides of the head in unalined, or offset, relation.

In describing my improved method reference is herein had to the accompanying drawings which illustrate the successive steps or stages in the manufacture of the tool, and in which Figures 1 and 2 show, respectively, a side elevation and an edge view of a bar of metal from which the tool is formed;

Figs. 3 and 4. are, respectively, a side elevation and an edge view of the same as it appears after the first forging operation;

Figs. 5 and 6 are, respectively, a side elevation and a bottom plan view of the same subsequent to the second operation;

,Figs. 7 and 8 are similar views subsequent to the third operation;

Figs. 9 and 10 are similar views subsequent to the fourth operation; and- Figs. 11 and 12 are, respectively, a side elevation and a bottom plan view of the finished tool.

In carrying out the method of manufacture which constitutes the invention, a plain bar or blank 1 of steel, as shown in Figs. 1 and 2, is provided,'the same being rectangular in cross section and having the requisite stock to produce the finished tool. This blank 1 is initially shaped at a single operation, as in a forge press, to produce the forging shown in Figs. 3 and 4:, which consists of a head portion .2 and oppositely disposed straight rectangular arms 3 and 4, the latter being of substantially equal cross-sectional dimensions and differing in length to the extent that'more stock is required in arm 3 than in arm 4:. The head 2 has a vertical thickness approximately double that of said arms. Said arms are made in this initial step to occupy positions in offset relation with the under surface of the arm 3 disposed in the plane of the under surface of said "Specification-of Letters Patent,

. Pa ent d M r- -.4.1119ia ,Applicationafiledpril .28. 1917. Serial No. 165,122.

head wbi-l he op surfa e rthe a m i in heplane ofithe opsurfaoe Q I. l-1 Q3. a shown, 7 v v The second step of the operation consists introduoingthe forgingshown in Figs; 3 .:;1nd: ,&' in a forge-press and punching a tapered socket 5 of oval form in a central position in the said head portion, as shown in Figs. 5 and 6. Immediately following the socket-forming step, as aforesaid, the forging is placed in a press and the web 6 at the bottom of said socket 5 is punched out to form a tapered eye 7, as shown in Figs. 7 and 8.

The fourth step consists in introducing the forging shown in Figs. 7 and 8 in a forge-press and expanding the head to the form shown at 8 in Figs. 9 and 10, and finally shaping the eye 7 The final step consists in drawing out the arms 3 and 4 and shaping them respectively to form the blade 9 and pick 10, as shown in Figs. 11 and 12, this final stop being performed in a manner well understood by those skilled in the tool forging art.

As is obvious, the relative positions of the arms 3 and a formed in the first step of the method are substantially maintained throughout the subsequent steps so that the completed tool will have the mattock blade 9 disposed adjacent to the lower end of the head 8 with its under surface flush with said end, while the pick 10 is disposed in an elevated position with its upper edge or face flush with the upper end of said head.

The tool is especially designed for military use, it being adapted not only for emprotect the hand of the user from injury,

preventing the fingers from coming into contact with the ground when the tool is em ployed as a spade or scoop.

What is claimed is- 1. The herein-described method of making 3 a tool having a centrally located head and oppositely extending shanks disposed in olfset relation,-consisting in forging the end portions of the blank to ofi'set them in opposite directions and leave the center portion in its original condition, displacing the undisturbed center portion by a punching operation thus bending but not breaking the grain or fiber of the original blank, and then forging the end portions to the desired shape.

2. The herein-described method of making a tool having a centrally located head and oppositely extending shanks disposed in offset relation, consisting in forging the end Copies of this patent may be obtained for portions of a blank on opposite sides of a central head-forming portion to offset said end portions in opposite directions, and Sub sequently displacing the central head-forming portion by a punching operation thus bending but not breaking the grain or fiber of the original blank. V

In testimony whereof, I aflix my signature in presence of two subscribing Witnesses.

SAMUEL T. TYLER.

'Witnesses: e I

' JOH A. MOORE,-

five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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