US349496A - Wire-cutter - Google Patents

Description

(No Model.)

I R. HAYDEN.

. WIRE (BUTTER. No. 349,496. Patented Sept. 21, 1886.

.- UNITED STATES PATENT OFFICE.

RANDOLPH HAYDEN, OF HADDAM, CONNECTICUT.

WIRE-CUTTER.

SPECIFICATION forming part of Letters Patent No. 349,496, dated September 21, 1886.

' Application filed March 19, 1886.

To all whom it may concern:

Be it known that I, RANDOLPH HAYDEN, a citizen of the United States, residing in Haddam, in the county of Middlesex and State of Connecticut, have invented certain new and useful Improvements in Wire-Cutters, of which the following is a specification, illustrated by the accompanying drawings.

My invention relates to that class of wirecutting pliers which are provided with separable or removable cutters mounted contiguously in or between the pivoted jointplates; and the object is to increase the strength of such pliers without increasing their size or weight, to provide a tool in which theeutters may be readily reversed, and to reduce the cost of manufacture by diminishing the labor and material expended in their manufacture. To accomplish these objects I construct and apply my invention in the manner shown in said drawings, in which- Figure 1 is a front View of my improved wire-cutter with jaws open. Fig. 2 is an edge View of the same. Fig. 3 is an edge view of my improved wire-cutter with the jaws shut. Fig. 4 is a section on a a in Fig. 1. Fig. 5 is a front view of one leg and joint-plate of said wire-cutter. Fig. 6 is a front view of the removable blade or cutter of the same; and Fig. 7 is a front view of the head of said wire-cutter modified by rounding off its edges.

In these figures, A and A are two jointplates, which are formed of iron or steel in a single pattern, are provided with legs B and B, respectively, and with arms or pinchingjaws C and C in the usual manner. PlatesA A also have marginal slots S S, and are con trally pivoted upon screw D. Each of these plates is hollowed out on the ,inner side by a transverse channel, E, having parallel sides F F, and a suificient depth to contain the cutter G, hereinafter mentioned. This channel extends from side to side of each joint-plate, in the manner illustrated in Fig. 5.

G G are two cutters, being plates of tem-' pered steel, formed of one and the same size and shape, and having terminal slots H H, which constitute the shearing-jaws of this tool. The cutters G G are fitted snugly into the channels E of both joint-plates, and are securely held therein by the pivot-screw I), which passes Serial No. 195,800. (No model.)

through central perforations therein. The slots S S in the joint-plates are diametrically opposite each other, and the slots H H in the out ter-plates are so located that they coincide with the slots S S when the parts are put together. Preferably, I form the slots H H near diagonally-opposite corners of the plates G G, in order to make the cutting-jaw, which is on the wider side, as strong as possible.

The nearest approach to my construction of which I have any knowledge is a tool in which the cutters are circular, and are fitted into circular recesses in the joint-plates, and are held against rotation by lugs on the walls of the circular recesses, which fit into corresponding notches in the disks.

The advantages of my construction are that the straight walls of the transverse channels E E receive the strain put upon the jaws in cutting upon opposite sides of the pivot, which adds materially to the strength and durability of the cutters; also, by leaving themetal be tween the front wall of the channel E and the plier-jaw, the strength of the latter is mate: rially increased 5 and by my construction the cutters may be reversed or turned end for end, should it be found desirable (as it often will be) to do so.

Such being the construction of my improved wire-cutter, the mode of its operation is similar to that of all other wire-cutters of the same general class above specified. It is to be observed, however, that the cutters G G, being of the general form of a parallelogram with rounded ends, can be cut from steel plates with greater economy of labor and stock than has been attained in forming cutters of any other practicable form. The form of the cutters G G also allows the joint-plates A A to contain abundant material, and consequently abundant strength in that part in which jointplates of this general character have hereto fore been practically weakestnamely, in that part of the joint-plate which lies between leg B or B and screw D; also screw D holds the" cutters G G firmly in position in channels E E, without the aid of any additional or special device whereby to prevent the rotation ofcutters G G within said channels; and, again, the form of cutters G G is such that a new cutter can be made and. inserted in the tool by any .machinist very easily and quickly, when desired.

. I claim as my invention, and desire to secure by Letters Patent 5 1. In a tool of the character described, the jaw-plates A A, provided on their inner faces with transverse channels E 1 having straight parallel walls, in combination with the cutters G G, fitting said channels, and each provided ID with a central opening to receive the pivot D, by which the joint-plates are united, substantially as shown and described.

2. In atool of the characterherein described,

the joint-plates A A, provided on their inner I 5 faces with transverse channels E E, having straight parallel walls, and at opposite sides \Vitnesses:

WVILLARD EDDY, GEORGE G. VA'ILKLEY.

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