US351478A - Cutting-nippers - Google Patents

Description

(No Model) S. TAP-T.

CUTTING NIPPERS.

Patented Oct. 26, 1886 WITNESSES C. 26.0%)51476 ATTO R N EY a o hognphur, Wash?" UNITED STATES PATENT OFFICE.

STEPHEN TAFT, OF WORCESTER COUNTY, MASSACHUSETTS.

CUTTING-NIPPIERS.

SPECIFICATION forming part of Letters Patent No. 351,478, dated October 26, 1886.

Application filed J une 30, 1886.

To all whom it may concern:

Be it known that I, STEPHEN TAFT, a resident of the county .of Worcester, in the'State of Massachusetts, have invented Improved Cutting-Nippers, of which the following is a specification.

My improvement relates, mainly, to such nippers as have their cutting-edges at right angles, or nearly so, to their handles,and whose edges pass each otheras they out, though they may be applied wholly or in part to others.

It is designed to enable them to do more work with the same power, or the same work with much less power, than any madein the common way. This is accomplished by causing the cutting-edges to approach each other at an angle instead of parallel to each other, one or both edges being made at an angle varying from a right angle to their line of motion, at which angle such nippers have hitherto been made, so that in cutting anything like a wide piece or a coil of wire they cut progressively and successively in a flat piece cutting one edge first and across progressively to the other, and in the coil cutting one wire off first and the others successively. This successive shearcut is made by giving the cutting-edges an angular or diamond form from some point, preferably the middle part, though for some purposes it may be placed at one side. Thus the edges will approach each other angularly and not parallel, but-more or less differing from a right angle to their line of motion, and also holding or supporting the loose end by means of a rest nearby holding it from being bent over the edge in cutting, so that a much thicker or harder piece may be out than if not so held. This is accomplished by extending the fulcrum-pin, or a portion of it, to make a rest on that sideof the edges, the other being usually held, and also by making a groove or grooves in one or both of the edges, so that in cutting a coil of wire the cutters shall overlap one or more turns, as desired, without cutting, and out beyond them, forming rings of two, three, or more turns of the wire, and by using several grooves a corresponding number of rings may be cut at one stroke, a notch being made in the side of the jaw, if necessary. to give room for inserting the coiled wire. These features of myimproved cutting-nippers make ita com- .rings from a coil, E, at one stroke.

Serial No. 206,708. (No model.)

plete tool for a great variety of work, and when used by any kind of power or by hand requiring much less force to do the work than others. v

In the accompanying drawings illustrating a pair of nippers embodying my invention, Figure l is a side view. Fig. 2 is a front view of the jaws as seen from the left of Fig. 1, and Fig. 3 shows some cuts illustrating its work. Fig. 4 is a perspective view of the head of the nippers,showing clearly the cutting-edges and the notches in the edge on one side.

The same letters indicate the same parts wherever they occur.

A A are the handles, made in most any of the usual forms, and having a strong joint at the fulcrumpin B. This pin B, or a part of it, is extended on each side to form a rest for the end of the work, being cut off, as at d, Fig. 1. i

0 Care the jaws, preferably made with thick lips passing each other, and with their edges in the diamond or angular form shown in Fig. 2, so that a small part only is cutting at any time. The jaws G 0 have also notches G G, made to allow a coil of wire to pass over between the edges, which, have one or more grooves, c 0', made in one or both, with cuttingedges left between large enough to out one wire of the coil, the spaces being made for the purpose of leaving one, two, or more turns of the Wire uncut, thus forming rings of two, three, or more turns, as at e 6, Fig. 4, several grooves cutting a corresponding numlfir 13f t Fig. 3, is shown a wide piece partly out, showing the progressive cut, the lines I) I) and b 1) indicating the position of the cutting-edges.

I am aware that it is not broadly new to have cutting-jaws at right angles to the handles, nor to have grooves in the edge of rodcutters, nor to make shear-cutting edges in metal-cutting tools.

Having thus fully described my invention, what I claim therein as new, and desire to patent, is

1. In cutting-nippers, the jaws O C, at right angles to the handles, each jaw having a cutting-edge in diamond or angular form,wherebyon either side a progressive or shear out can be made, substantially as described.

2. In cutting-nippers, in combination with the jaws O O, at right angles to the handles, each jaw having cutting-edges in angular form, the fulcrum-pin B, extended and forming a 5 rest for end of the work.

3. In cutting-nippers having an extended fulcrum-pin, one jaw having an angular cutting-edge and the other provided with alternate grooves and angular cutting-edges, substantially as described.

4. The jaws C G at right angles with the handles, each having diamond-shaped eutting-edges, as described, and one provided with grooves in one edge and having anoteh, I 5 G, whereby the wire coil can be suitably adapted to the notched cutting-edges to be out at any point desired.

5. As an article of manufaeture,the cuttingnippers herein described, consisting of a pair of cutting-jaws pivoted together by a fulcrumpin which extends on each side, said jaws being at right angles with the handle and each notched in the side and having diamond or angular cutting-edges, the cutting-edge of one jaw notched, substantially as shown and de- 25 scribed.

STEPHEN TAFT. Witnesses:

C. H. ARNOLD, J AMES GREENE.

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