US629632A - Metal-shearing machine. - Google Patents

Description

No. 629,632. Patented July 25, |899. B. WESSELMANN.

METAL SHEARING MACHINE.

(Application led Dec. 8, 1898.) (No Model.)

2 shanty-sheet vl.

No. 629,632. A Patented luly 25, 1899. B. WESSELMANN.

METAL SHEARING MACHINE.

(Application led Dec. 8, 18.98.) (No Model.) 2 Sheets-Sheet 2.

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. 'INITED l STATES PATENT OFFICE.

BRUNO wEssELMANN, OF GTTINGEN, GERMANY.

METAn-SHEARING MACHINE.

.SPECIFICATION forming part of Letters Patent N o. 629,632, datedl July 25,

Application filed December s. 189s.

.To all whom it may concor/t.-

Be it known thatI, BRUNO WEssELMANN,a subject of the King of Prussia, Emperor of Germany, residing at 58. Friedlander Weg,

, Gttingen,in the Province of Hanover, Kingdom of Prussia, Germany, have invented new and useful Improvements vin or Connected with Metal-shearingA Machines,.of `which the following is a specication. .n

The present invention has for its object anr improved construction and shape of framing for a metalshears and a device by which the work being-cut may be led and held in cor` rect position during the operation of cutting.

In the accompanying drawings, Figure lk v.shows a side elevation of the metal-shearing the required lengths the cut lengths simply require portions of the metal cut away to form the entire framing. l l

The metal from which thev improved stands or framing are to be made is rolled in the sectional form shown in Fig. 3 or in Fig. 4. A suitable length,which would vary according to the size of the shears, is out from the piece. To accommodate the fast blade m of the shears, a part of the metal at one side of the upper part o b is cut away'and the stand is complete, as is shown in Figs. 2 and 2A.

The base d, which serves to support the stand, maybe formed on each side of the portion c, as in Fig. 3, or on one side only, as shown in Fig. 4.

The cutting blades m and m are so arranged relativelyto each other that the lever h2, to which the blade m is secured, lies in an angular recess formed by the bent-back portion a of the stand, the fast blade m being secured to the part c of the stand. By this arrangement thev v cutparts ff of the work F can both be led below the pivot-bolt 0 to the rear of the shears without occasioning any Serial No. 698,652. `(No model.)

excessive bending of the plate being cut.

The passage of the work through the shears is thus greatly facilitated, as little friction and springing of the cut parts of the lWork are set up. In addition to these advantagesL the stand is stronger by being formed out ofone yh is avholderfor the material being out and is capable of adjustment by being passed through and heldin the bolt o of theleve'r of the blade fm.

yand its free lower end may advantageously be made in the form of a foot-plate h",'adapt ed to rest O nthe work F,'and thus prevent the latter turning or being tilted upward by.

the pressure ofthe movable blade at the place where it is being out. Thevertical distance of theunder surfaceof the foot 'h' above the cutting edge of the blade 'm is vsuch as will admit the easy introduction of workof the The holder 7L is bent'downwardly f greatest thickness to be cut by the shears.

- In cutting, the part of the work between the blades thus liesbeneath theV holder h. The' bolt 0 is prevented-from turning in the shear framing o b c d, and the .horizontal arm of the holder isheld in the bolt o by means ofa setscrew s. It can thus be adjusted in any posit-ion desired. v

By means of this invention malleable iron of suitable outline can be rolled into the required shape, and the operation of the blades is facilitated, as the horizontal web or branch Sio b can in the'case of malleable iron be made so thin that the cut parts of .the work in passing'back or away from the blades are only slightly bent. The cutting operation is thus y eased. This invention also offers facilities for manufacture, since by simply cutting olf varying lengths from a piece of malleable iron shear supports or bases of varying sizes can be obtained, it being merely necessary to cut out or concave thetop edge of the web a, as seen in Fig. 2, and to cut away at the upper frontpart of the web b, as seen to the left 'malleable iron canibe adapted for'rightor' lefty hand shears, as the cutting away ,of the part b is done at one end or another. In cast frames, on the other hand, two patterns or forms would be necessary.` In east bases, moreover, the required strength cannot be attained Without correspondingly thickening or strengthening the material. Especially the horizontal connection b would have to be of great thickness,- so that it would materially obstruct the work, adisadvantage which is avoided in the above-named base of malleable iron. In addition to the malleable frame being strong and of light Weight the manufacture thereof is cheap.

Having now particularly described and ascertained the nature of mysaid invention and in what manner the same is to be performed,

i I declare that what I claim isl. A metal-shearing machine having a stand or frame comprising an upper vertical branch a, an intermediate horizon tal branch 1J, a lower vertical branch c and a lower horizontal branch d, said frame having a portion of the intermediate horizontal branch b and a portion of thenppervertical branch a, cut away, a stationary cutting-blade secured to the vertical branch c adjacent to said cut-away portion, a movable blade, and an operating-lever for the latterfulcrumed to thevertical portion ct at the rear of the cut-away portion thereof, as and for the purpose set forth.

2. A metal-shearing machine comprising a frame a b c d, a bolt 0 non-rotatively secured to the frame, a blade m fnlcrnmed on the bolt, and a holder h adjustably secured' tothe fnlcrum or bolt, substantially as described.

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

BRUNO WESSELMANN.

Witnesses:

HENRY HASPER, EMINAL. GoLDscnMtnr.

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