US2007583A

US2007583A - Method of making shovels and the like

Info

Publication number: US2007583A
Application number: US664349A
Authority: US
Inventors: Edwin T Nipher
Original assignee: AMES BALDWIN WYOMING CO
Current assignee: AMES BALDWIN WYOMING Co
Priority date: 1933-04-04
Filing date: 1933-04-04
Publication date: 1935-07-09
Anticipated expiration: 1952-07-09

Description

July 9, 1935. E, T, NlPHER 007,53

METHOD OF MAKING SHOVELS AND THE LIKE Filed April 4, 1933 2 Sheets-Sheet 1 July 9, 1935. E T MPHER 2,007,583

METHOD MAKING SHOVELS AND THE LIKE Filed April 4, 1933 2 Sheets-Sheet 2 Patented July 9, 15935 f UNITED sfrarss PATENT OFFICE W. Va., a corporationof Delaware Application April 4, 1933, Serial No.- 64,349

9" claims.

The object of thisinvention is to provide a method for the construction of a shovel or like blade having a handle-receiving extension involving few and simple operations. My inventionl will` be well understood by reference to the following description taken in connection with the accompanying drawings, whereinz- Fig. Y1 is a front elevation of a completed shovel with the handle broken away;

Fig.v 2 is a section on the line 2-2 of Fig. 1 on an enlarged scale; Fig. 3 is a feront elevation of the blade blank and the part which forms the extension prior to their being connected together;

Fig. 4 is a side elevation of the part forming the extension; and

Fig. 5 is a section on the line 5 5 of Fig. 3 on an `enlarged scale.' p v Prior to my invention shovels have been formed as shown, for example, in the patent to Robertson 673,130, April 30, 1901, by butt welding into a suitable notch or recess in a blade-forming blank the ends of appair of straps which serve for securing the handle and the blank has `then been shaped to gage by a rolling operation. I propose to minimize or entirely eliminate the latter operation by providing a method of manufacture wherein a blade blank is utilized at least approximately of nished area and thickness.

Referring to the drawings, in Fig. 3 I have illustrated a bladeblank proper 'I in the form of a suitable flat piece of steel of the desired thickness of theblade of the shovel and of such size as topermit it to be bent to the finished form shown in Fig. 1, although it may be slightly longer, as by the amount above the dot and dash lines 9 in Fig. 3, for reasons which will hereinafter appear. In the back or upper end of the blank is formed a recess or notch having the converging sides II.` The handle-forming extension is -to be secured to the margins of this notch. Herein this extension is formed of two superposed pieces of metal of desired thickness, ordinarily somewhat lighter yet substantially like the thickness of the blade to provide a structure of adequate strength and these pieces (see Figs. 3 and* 4) are provided with a relatively narrow strap-forming portion I3 terminating in end portions I5 which in the example shown are enlarged and resemble a spear-head at the `end of a shaft corresponding to the strap portions I3 and having `converging edges `Iorrryied-l at an angle corresponding to the angle of the edges II of the notch in the blade blank. The enlarged head I5 has approximately the form of this notch and may be somewhat (o1. ifs- 113) `shorterand is wider so that if moved downwardly into the notch from the spaced position of Fig. 3 the sides thereof would make contact with the side margins II of the notch before the head would bottom in the notch. In the example disclosed the handle-receiving part is preformed as `a unit to at least approximately its final nished form prior to attaching it to the blade blank proper l. Herein (see Fig. 4) the strap portions I3 are shaped to approximately semi-cylindrical form and disposed at a desired angle relative'to the head portions I5, the margins oi` which latter are disposed in face to face contact. The central portions of these heads, as indicated at Il, may be formed, as seen in Fig. 4, spaced from each other to form a frog which in the iinishedshovel (see Fig. 1) is disposed below the rear of the blade and receives the end of the handle. 4 At least the lower portions of the straps I3 may be formed to presenta tubular structure and be welded togetherV asindicated by dotted lines at I9 in Fig. 4. A

To provide for securing such a handle-receiving part as described to the blade blank proper, which is of approximately nished thickness or gage by means of an electric butt welding operation, I may securel together to welding the marginal portions of the enlarged Yheads I5 as indicated by the dotted linesII in Fig. 3 and the dark line similarly numbered in Fig. 5 where they pass the sides I I of the notch in the blade blank. Alter-` natively I may locally shape edge portions of the parts to correspond in thickness one to another as herein by thickening or upsetting the margins I I ofthe notch so that it is of substantially the thickness of the edges of the two heads i5, as seen in Figs. 2 and 5. y Preferably `i da both. The heads I5 of the handle-retaining part shown in Fig. 4 may then be inserted into the notch and advanced therein until the sides thereof contact with the margins II. Because of the greater` width of these heads as compared with the width of the notch the heads will not bottom in the notch and because of the somewhat greater depth of the notch the margins I I will make Contact with the sides of the head throughout the length of the latter. Effective Contact between the parts to permit them to be heated to a fusing temperature for welding is thus provided andthe joint isthen completed by advancing the handle-receiving part into the notch. The opposed margins of the parts are fused and burned away during this operation until the head is united to the blade blank throughout vits margin. The upper edge of the enlarged head at the completion of the Welding Sli will have advanced to the location of the dot and dash lines 9 in Fig. 3 and the extension of the blade blank vabove these lines may be trimmed away. The blade is then bent to the desired finished form as, for instance, that indicated in Fig. l, and the handle 29 may be bulldozed into the socket formed by the straps I 3 so that its end enters the frog Il at the center of the enlarged head portions and thus having an effective connection to the blade of the tool.

I am aware that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and noty restrictive; reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

I claiml. The method of making a shovel or like bladev having a handle-receiving extension which com- V prises forming a blade blank of substantially Y the former into said notch.

2. The method of making a shovel or like blade having a handle-receiving extension which comprises forming a blade blank of substantially nished size and thickness and provided at the back with a tapering notch, superposing a pair of extension-forming pieces of like thickness to the blank having end or head portions approximately conforming in shapel to said notch and of greater width, welding together the end portions along the sides thereof, entering the end portions in said notch and welding together end portions and blade while advancing the former into said notch.

3. The method of making a shovel or like blade having a handle-receiving extension which comprises lforming a blade blank of substantially nished size and thickness and provided at the back with. a tapering notch, constructing an extension-forming part from two superposed pieces having tongues and enlarged heads, the latter approximately conforming in shape to said notch but of greater width, preforming said part to handle-receiving contour, welding togethersaid heads at their sides, entering the head portions in said notch and welding together head portions and blade while advancing the former into the notch.

4. The method of making a shovel or like blade having a handle-receiving extension which comprises forrning a blade blank of substantially finished size and thickness and provided at the back with a tapering notch having a margin thickened to correspond substantially to the combined thickness of the edge portions of the superposed pieces hereinafter recited, superposing a pair of extension-forming pieces having end or head portions approximately conforming in shape to said notch and of greater width, entering said end portions into the notch with their sides opposed to the thickened margin `thereof and welding together end portions and blade while advancing the former into the notch. v

5. The method of making a shovel or like blade having a handle-receiving extension which comprises forming a blade blank of substantially finished size and thickness and provided at the back with a tapering notch having a margin thickened to correspond substantially to the combined thickness of the edge portions of the superposed pieces hereinafter recited, superposing a pair of extension-forming pieces of like thickness to the blank having end or head portions approximately conforming in shape to said notch and of greater width, entering said end portions into the notch with their sides opposed to the vthickened margin thereof and Welding together end portions and blade While advancing the v former into the notch.

6. The methodof'making a shovel or like blade having a handle-receiving extension which comprises forming a blade blank of substantially -inished size and thickness and provided at the back with a tapering notch having a thickened margin, superposing a pair of extension-forming pieces having end or head portions approximately conforming in shape to said notch and of greater width, welding together the end portions along the sides thereof, entering said end portions into the notch with their sides opposed to the thickened margin thereof and welding together end portions and blade While advancing the former into the notch.

7. The method of making a shovel or like blade having a handle-receiving extension which comprises forming a blade blank of substantially finished size and thickness and provided at the back with a tapering notch having a thickened margin, constructing an extension-forming part from two superposed pieces having tongues and enlarged heads, the latter approximately conforming in shape to said notch but of greater width, preforming said part to handle-receiving contour, entering said heads into the notch with their sides opposed to the thickened margin thereof and welding together the heads and the blade while advancing the former into the notch.

8. The method of making a shovel or like blade having a handle-receiving extension which comprises forming a blade blank of substantially finished size and thickness and provided at the back with a notch having converging edges, superposing a pair of extension pieces of substantially like thickness to the blade and having end portions approximately conforming to the shape of said notch and of greater width, locally shaping edges of the parts to correspond in thickness one to another, entering the end portions in the notch to oppose said edges and welding together end portions and blade while advancing the former into the notch.

v 9. The method of making a shovel or like blade having a handle-receiving extension which comprises forming a blade blank of substantially finished size and thickness and provided at the back with a notch having converging edges, superposing a pair of extension pieces of substantially like thickness to the blade and having end portions approximately conforming to the shape of said notch and of greater Width, locally shaping edges of one of the parts to correspond in thickness to the other, entering the end portions in the notch toA oppose said edges and welding together end portions and blade while advancing the former into the notch.

EDWIN T. NIPHER.