US80254A - Improvement in sheaes - Google Patents

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@einen tatee glstrltt @ffice HERMANN WENDT, OF ELIZABETH, NEW JERSEY, ASSIGNORTO HENRYSEY- MOUR AND ROBERT H. SEYMOUR, OF BROOKLYN, NEW YORK.

Lam-s Param No. 80,254, dated. July 21, 186s.

IMPROVEMENT IN SHEARS.

TOl ALL WHOM I'I MAY CONCERN:

Be it known Ithat I, HERMANN WENDT, of Elizabeth, inthe county of Union, and State of New Jersey, haveV invented a new and useful Improvement in Shears; and I do hereby declare that the following is a full, clear, and exact description thereof', which `will enable others skilled inthe art to makeand use the same, reference being had'to the accompanying drawing, forming part of this specification, in which Figure 1 is a side viev.1 of a pair of shears of ordinary construction.

Figure 2 is a side Aview of a pair of shears, constructed according to my invention,

Figure 3, an inner side view of a portion of one of the blades. i

Figure 4, a transverse section of iig. 2, `taken inthe line a' x.

.Similar letters oi' reference indicate like parts. l

This invention relates to a new and useful improvementin shears for general us'e,"and it consists- First, in formingthe thumb-piece'of the eye or loop of thel'handle, through whichv the thumb passes, in such a manner that the shears may be operated with far greater facility than hitherto. i

' Second, therinven'tion consists in a certain means whereby the holes through which` the rivet`or screw passes, to hold the parts oi' the shears together, may be formed by punching insteadof drilling, which is now` a necessity. w v Y At present the rivet-holes Acannot berpnnched, in consequenceoi` the drop which holds the steel to the malleable cast-iron portions coming in contact, in its descent, with the portions of the malleable cast ironV Athrough which the rivet or screw passes, and compresses or hardens said portions to such a degree as to preclude punching. .This diliiculty is fullyobvia-ted by. my improvement. I Y

A A" represent the handles of the shears, which, wit/h. the extensions a, to which the`- steel b is welded,V

are oi' malleable cast iron. The lhandle A is castor formed with au eye or loop, c, of usual shape; The handle A has its-eye or loop'd about of the usual shape, but the thumb-reste has a quite different position from that, f, of the ordinary shears, as will be readily seen by referring to figs. 1 and 2. The thumh-restfextendsA downward and laps over the upper front part of the eye or loop c, and does not properly support thethumb, while, in my improvement, the rcst e inclines but slightly downward, but a trie below the upper edge of the handle A', in front of the eye or loop d, and is of concave ferm at its upper surface. In consequence of thiskthe reste serves as a better support f or the thumb, and the shearsmay be operated with far greater facility than those of ordinary manufacture. f n o I v B represents the rivet or screw, by which the two parts of theshears are held together. ,This screw or rivet passes through holes gg, made through the two parts of the'shears. The steel b, (see'iig.'3,) is welded to the inner surface of the parts, the steel exten-ding from the points nearly to the holes g g. This steelis welded to the parts by vmenus of a drop, and in manufacturing the ordinary shears, the malleablejcast iron,` around the holes g, will be compressed and'hardened bythe drop, as the latter necessarily laps'jo'verithe inner endof the steel. Y l' ,l

This hardening of the malleable cast iron at that point renders it necessary to form the holes g by drilling, whichV is attended with considerable expense, and by whichal perfect ho'l'e cannot-be produced.' A's the h'ole in one of the blades requires to be made square, and as a drilled hole isround, Vit must. he squared by filing, and this Ais rarely or n'ever done in a.A perfect manner. This difficulty is fully obviated by my improveA ment, as the square hole may be .punched in proper form without any trouble whatever. i

In my improvement, I make arrecess, z', in the innersurfaces ofthe malleable cast iron, at the parts' where` the holes g are to be made, and these'reeesses, of course, are Vbeyond -the reach or action of the drop, and' hence the iron within these recesses will be soft, and the holes g may consequently be readily punched, which costs but a trifle compared with drilling. i

These reeesses may receive any absorbent materia-i, saturated-with oil, to'keep the rivet or screw weil lubricated.

Having thusdesoribed my invention, I claim as new, and desire to secure by Letters Patent- Casting the circular recess z' in the shear-blade, for the purpose of preventing a drop-hammer from compressing or hardening the metal at the point where the rivet-hole is to be made, whereby the metal within the recess is left soft, in order that the rivet-hole may be formed'by punching, as hereiny shown and described.

The abovespeciicatin of' my invention signed by me, this third dayof March, '1868.

HERMANN WENDT.

Witnesses:

STANLEY G. MASON, JAMES M. HADDEN.

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