US1111245A - Method of making shears. - Google Patents

Description

2 SHEETS-SHEET 1.

Evil- E. A. BERG.

METHOD OF MAKING SHEARS.

APPLICATION FILED JUNE 18, 1914.

1,1 11,245, I Patented Sept. 22, 19M

2 SHBBTSSHBET 2.

Eta-s15- Q/vi tnemo THE NORRIS PETERS C0,. PHOTD-LITHO, WASHINGTDN, D C.

' the thumb and hand are both made. or

To all whom it may concern:

NITED --Be itknown that I, EDWARD A. Emma citizenof the'United States, residing at the city of Bridgeport, county of Fair-field, State'of Connecticut, have invented certain new and useful Improvements; in Methods of -Making Shears; and I do declare the:

ffollowing to be a fu11,ac1e r, and exact description of the invention,such' as will enable othersskilled in the art to which it appertains to make and use the same. i

Thisinvention relates to-certain new and.

useful improvements in methods of making shears, and the primaryobject thereof is to provide a method in which. the handles for formed separately of thefblades andare subsequently welded thereto, as distinguished from shears the two members of whichare formed in-a single integral piece, and are drop forged.q i

A furthenobject ofjzthe inventionisto provide a methodof making shears in which the handles forthethumb and hand may '25v made of wire, or short pieces of rods or simi- 'larbar stock, or 'same maybe made from seamless tubing, or by drawing sheet metal into cup form and then shaping and utillzingthe ring formed by the-flange of the cup as the handles' Other and further objects will appear later, and manifest themselves in the course. ofthe following description.

In the. drawings Figure 1 is a plan viewof a plece of sheet metal showing themanner in 'which the blade blanks are cut therefrom; Fig. 2 is a plan view of one of the cut blade 7 blanks; F1g.;3"is asection on the line, 3 3

of Fig. 2; Fig. 4 is a plan view of theblade blank after thetang thereof has been formed by doubling the'shank of the blank; Fig. 5

' 1s a view similar to Fig. 4 showing in dotted 1 8-8 of Fig.5; Fig.19 is a plan view of the completed shears; Fig. 10 is a detail view in longitudinal section taken through the pivoting screwjiof the .shears; Fig. 11 is a plan view'of a blank of wire, or rod, or the i like from which the-handles are formed;

Fig. 12 isa'cross section of Fig. 11; Fig. 13, is asideelevation of the blank of Fig. 11,

.- showing same in the first stage of its forma- METHOD onMAKInei-sniamnsj v Specification of Letters Patent. 1 Application filed June 18, 1914; :3 Ser1'a1No. 845,817.

Fig. 18 is aside elevation which the tang at its heel STATES-PATENT OFFICE fnnwhnn A. Bans, or'ian'rnenronr; connncricur.

Patented se aaz, 1914.

. tion to' provide thefinished hand-handle;

Fig 14 is -a side elevation of the hand handle n the second stageof its formation; Fig. 15 1s a side elevation of the hand handle in its final or completed form; Fig.- 16 is a sec- .tion on the line 1616 ofFig. 15; Fig. 17

isa side elevation of a blank in the process of formationof one of the thumb handles;

of the thumb handle in the third stage of its formation; Fig. 19 is a side elevation handle; and Fig. 20 is a section onthe line 20 20 of Fig. 19. 1

, The first step of the method is that of cut- ;blade blanks 1, from asection of sheet metal 2, after which the stock of the blank is cut away at 3 and 4, at the back of the blade blank, as depicted in dotted lines in Fig. 2 of the drawings, and as shown in full lines in Fig. 3. p The next step in'the method consists in doubling the tang 5 to the form shown in Figs. 4 and 6, whereupon the blank appears as shown in FigL-4, and isthen cut away as shown in dotted lines at 6, in Fig. 5, and as shown in full lines in Fig. 8, following end is concaved at 9, and beveled at its opposite end at 10.,

The thumb and hand handles are'both formed substantially in the'same manner, the only difference being that thegsize and final shape of thehandles diifenthe hand handles 12 being larger than the thumb handle 12 and being of a more elliptical shape than the thumb handles, which latter are possessed of more of a circular form.

t The handles are formed ofa length of stock 10, the ends of which are beveled at 11, the stock being formed ofwire, rods or bars, of suitable material, and being then curved at its ends as shown in Fig. 13, following which the blank is further bent into the form shown inFigL 14, whereupon the hand blank is shaped as shown in Fig. 15,

and laterally flared, as more particularlyshown in Fig. 16, while the thumb handle is given the shape shown in Figs. 19 and 20. The final step ofthe method is to weld the of'the completed thumb handles to the ;concaved portions 9 of the heels of thetangs, which weld is preferably formed at the points where'the ends of the blanks, of which'said handles are formed, abut, whereby the points of abutment of the ends of the blank are included in the weld.

The handles may be made of seamless'tubing by cutting sections of proper width therefrom and then shaping the cut sections, as is obvious, or the handles may be made by drawing sheet metal of proper gage into cup form, and then in removing the bottoms of the cups to leave the rims or flanges thereof, which latter are then shaped to pro v vide handles of proper'shape.

As shown in Fig. 10, of the drawings, the

pivoting screw S for the blades preferably has a hemispherical part F which acts to shears which consists in first cutting-the blades from sheet metal stock, doubling the tangs of the blades and concaving the heel ends of the tangs, then in forming handles for the thumb and hand, and finally in. welding the handles to the concave heel endsof the tang.

Copies of this patent may be obtained for five cents each, by addressingthe f Ooinmissioner or'iatentsj.

Washington, I). G.

1. The hereindescribed method of making j Z The hereindescribed inethod of making shears which consistsin first cutting the I blades from sheet metal and then in reinforcing the. tangs thereof and providing same with concave heel; faces, then in forming the handles for thethumb andhand, and finally in welding the handles to the concave -heel faces; a

3. The herein described method of making shears, which consists in. first cutting' th e blades from sheet metal stock, then thickening the 'tangs v of the blades, then informing the handles for the thumb and hand, and

ends of thethickenedtangs.

In testimony whereof I affix my signature in presence of twowitnesses,

EDWARDA, Nitnesses: j p

F. V SM rinJn, T: N EM.

B RQ

finally in welding the handlesto the heel

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