US107334A

US107334A - Improved wire-cutter

Info

Publication number: US107334A
Authority: US
Publication date: 1870-09-13
Anticipated expiration: 1887-09-13

Description

F." CAREW.

Wire Cutter.

No. 107,334. Patented Sept. 13, 1870/ F2 venior.

fithtitml w w ca FRANK- OAREW, or son'rn HADLEY FALLS, nassacnnsnrrs.

Letters PatcntNo. 107,334, dated September 13,1870.

amp-Revs]: WIRE-CUTTER.

The Schedule referred to in these Letters Patent and making part of the same Figure 2 is a side elevation of one handle and jaw,

showing the cutter removed from the jaw.

Figure 3 is an'cnd view of the cutter alone.

Figure 4 is a'frontor plan view of the handle-and one jaw, showing the cutter partially removed from thcjaw.

My invention consists of an improvement in the construction of wire-cutters, having movable cutting jaws, as hereinafter explained and described.

The cutting parts may be retained in place bya small screw, the head of which impinges against the ends of the parts after being'insertcd in place.

- That others may be able to make and use my iu-' vcntion, I will proceed 'to describe its construction and operation. f

In the drawing,

A A represent the handles of the device, which are pivoted together by means of the pivot a passing through the hole a, and

13 15 represent the jaws, in each of which is madea channel or groove, which is dovetailed in form a; and a", representing the sides of said channels, which sides are nearer to each othcrat one end than at the other, which gives to the channel a tapered form longitudiually.

The handle A and jaw B may be madeof any common suitable metal.

The cutting piece 0, shown in fig. 3, has a piece, c, upon the backv side, which is of a corresponding form to the dovetail channel 0,- and is made to fit properly therein, and has the same taper longitudinally as has the said channel c.

The opposite side of the piece chasa sharp cuttingcdgo, c',-along its entire length.

The cutting part c is inserted in place by inserting the small end of the part c in the large end of the dovetailcd channel 0, and sliding it in longitudinally, until the ends of said part c are upon thesame plane with the sides of the. jaw B, when, if properly. made and fitted, the cutting part 0 will be firm and secure in place. They may be retained in. position by making a small threaded hole at'any convenient place near the cuttingfpart, and inserting a small screw, i, therein, so that the shoulder at the head of the screw shall impinge against the end of the cutting part, or'against the widest end of the part 0, thus operating to retain it in its proper position. I

The device might be equally operative if the dovetailed channel was cut but partially across the jaw B, or, if made entirely across, a stop might be placed at one end of the channel, against which the cutting part should impinge when in place, the small screw 1', above described, operating at the other end toretaiu the cutting part in place as before. In this. case the sides of the channel c might-be made parallel, instead of tapered: I prefer, however, the form and construction shown in the drawing, and as hereinbefore described,

as being the best in practical operation. 7

It will "be seen that in my device the dovetail cavity 0' is made wit-h its depth extending in a direction nearly perpendicular to a line passing through the center of the pivot a and the point where the editingedges meet at 0, so that, when used in cutting, the

force is exerted in a direction nearly perpendicular to the inner face of the part B, and the movable jaw or part c is not so liable to be wrenched out of its socket c, as the part B-inorc nearly surrounds said socket c, and gives a greater mass of metal to strengthen it.

I am aware that wire-cutters have heretofore been made having movable jaws, as shown in Letters Patent granted to Nathan Thompson J nly'14, 1868, and I do not claim the same, nor any part thereof irrespective of my particular construction of the device to gain strength ofthc jaw and cutters; and

.Having'thereforc described my invention,

What I do claim as new, as an improvement in said cutters, and desire to secure by Letters Patent, is-

The insertion of the dovetailed shanks of the re movable cutters c, in the dovetailed recesses e, in the approximate surfaces of the jaws B, and the confinement of said cutters in said recesses by screws applied from the lateral surfaces of the jaws, substantially as described.

\Vitnesses: FRANK OAREVV.

'1. A. CURTIS, (i. E. BUCKLAND.