US300031A

US300031A - Shear-cutting nippers

Info

Publication number: US300031A
Authority: US
Publication date: 1884-06-10
Anticipated expiration: 1901-06-10

Description

(No Model.)

' S. TAFT.

SHEAR CUTTING NIPPERS.

No. 000,031. Patented Ju ne 10,1884.

7 //v VENTUH' Ayn/k W/TNEEEEE UNITED STATES PATENT Errors.

SHEAR-CUTTING NIPPERS.

SPECIFICATION forming part of Letters Patent; No. 300,031, dated June 1384!- Application filed February 13, 1884.

To all whom it may concern.-

Be it known that I, STEPHEN TAFT,Of1\Iillbury, in the county of Worcester State of Massachusetts, have invented certain Improvements in Shear-Outtin g Ni ppers, of which the following is a specification.

My invention relates principally to handcutting nippers, though applicable with slight modification to others. Its nature is fully shown in the following description and accompanying drawings. of a pair of wire-cutters embodying my invention.

In said drawings, Figure 1 shows a side view of the head with the jaws open. Fig. 2 shows a side view of the cutters with the jaws closed; Fig. 3, a View at right angles to Fig. 2; and Fig. 4 a front View of the jaws closed, the same letters indicating the same parts in each.

G G are the handles, formed with a strong joint for the pin 0; A A, the jaws forming the head. i l y B B are the cutting-lips, made thick and solid,with the edges formed, preferably, a littancefrom the pin or fulcrum O as to pass close to each other and lap somewhat when closed, thus cutting the work by shearing or forcing one part by the other, as has been done in presses and machines, instead of cutting by forcing a wedge into the metal, as in the common edge-meetingform of cutters. The jaws -are also provided with supplemental lips or shoulders c p for'the lips B B to rest on when 3 5 closed, these being so connected by the curves "6 O that a small clear space is left for each cutting-edge when closed, and the other partsform a solid bearing against each other,

as in Figs. 2 and 4, so that hammering may 0 be done, if desired, bya head, a, (shown in tleless-than right angle, and so spaced in dis-' (No model.)

brokenlines, Fig. 2,) without injury to the cutting-edges. These supplemental lips also form, with the others, holders retaining the out, parts and not allowing tlj'enijtofplayfasin the coinni'oii'forni'l'""Iii'some cases it may be prefer,- able"to' make the grooves]? E, Fig.1, in the jawsfo'r cutting wire. This avoids the slight flat compression that would otherwise be made on" one side of each cut piece. 'These grooves are indicated by the broken lines D in Fig. 2.

The operation is deemed sufficiently obvious from the foregoing descriptionnot to need further explanation, and its advantages are apparent, particularly the strength of the cut ting-edges, their solidity rendering them much less liable to injury by the wrenching, pulling, or bending back and forth, so commonly practiced by the workman when he has a large or hard piece of work to cut. the latter 6o bending back and forth (so frequently breaking the common thin cutting-edges) being very much restricted by my construction.

' Having thus fully described my invention, what I claim therein as new is l 1. The cutting-lips B B, as described, in combination with the supplemental or holding lips c c, substantiallyias described.

2. The cutting-lips B B and the holdinglips c c forming a solid bearing together, substantially as and for the purposes set forth.

3. The cutting-lips B B, in combination with lips or shoulders connected to them by the curves or lines 0 O, forming free spaces for their edges when closed, substantially as described.

STEPHEN TAFT.

\Vitnesses: G. H. ARNOLD,

J. G.,ARNOLD. V