US543649A - Bolt-cutter - Google Patents

Description

(No Model.)

0. s. HILL.

' BOLT CUTTER.

No. 543,649. Patented July 30, 1895.

piece 3.

\UNILTED STATES PATEN Denice.

CYRUS SUMNER HILL, OF ROCHESTER, NEW HAMPSHIRE.

BOLT-CUTTER.

SPECIFICATION forming part of Letters Patent No. 543,649, dated. July 30, 189-5r Application filed August 7, 1894.

5'0 aZZ whom it may concern:

Be it known that I, CYRUS SUMNER HILL, a citizen of the United States, residing at Rochester, in the county of Strafford and State of New Hampshire, have invented a new and useful Bolt Clipper or Gutter, of which the following is a specification.

This invention relates to bolt-clippers; and it has for its object to provide a tool of this character that shall possess simple and efficient means for exerting a powerful cut on the bolt or rod operated upon, while at the same time being comparatively simple in construction and operation.

With these and other objects in view, which will readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is a side elevation of a pair of bolt-clippers constructed in accordance with this invention. Fig. 2 is a central longitudinal sectional view thereof, showing the cutter-jaws open. Fig. 3 is a detail in perspective of the sliding cutter-jaw. Fig. 4 is a similar view of the stationary or fixed cutter-jaw.

Referring to the accompanying drawings, 1 designates a bifurcated tool-head essentially comprising the parallel head-plates 2, connected at one edge by the intermediate bridge- The said bifurcated tool-head 1 has removably clamped therein between the plates 2 the stationary or fixed cutter-jaw 4. The said stationary or fixed cutter-jaw 4 is made of a suitable length of cast-steel and is v rvwwting-edge 8 that is disposed at an angle or inclination to the longitudinal center of the tool-head and mounted to slide on the stationary or fixed cutter-jaw 4 between the same and the intermediate bridge-piece 3 of the tool-head is the sliding cutter-jaw 9. The sliding cutter-jaw 9 is also made of cast-steel and is provided at that end which works in Serial No. 519,663. (No model.)

opposition to the blade 7 of the jaw 4 with the beveled cutter-blade 10 that is reversely beveled to the blade 7, and is provided with an inclined cutting-edge 11 that is formed parallel with the cutting-edge 8 of the stationary or fixed jaw, so that as the jaw 9 is slidback and forth it will be obvious that the relation of the cutting-edges 8 and 11 will produce a draw-cut, which provide for the severance of a bolt or rod much more quicklyand with less injury to the tool than a direct cut. The sliding cutter-jaw 9 is maintained close against the stationary or fixed cutter-jaw and the wear thereof also compensated for by means of the steel washer-plate 12 that is interposed between one side of the sliding jaw and the intermediate bridge-piece 3 of the tool-head, and a set-screw 13 ismounted in a threaded opening 14 in said bridge-piece and impinges on the washer-plate 12 to hold the same against the said sliding jaw to take up the wear and also to hold the same steady, and a jam-nut 15 working on the screw 13 looks the same in its adjusted position.

The sliding cutter-jaw 9 has projected from the inner end thereof the double rack-bar 16, with the teeth on both sides of which mesh the pinion segments 17 formed on the inner ends of the operating-levers 18. The said opcrating-levers 18 are removably and pivotally mounted within the tool-head 1 at their inner ends'on the pivot-bolts 19, and in their pivoted ends the said levers are provided with the oil-holes 20 which lead to the bolts 19, so

that the bearings of said levers may be lu- From the above the operation and advan- Y tages of the herein-described bolt-clippers will be readily apparent to those skilled in the art, and it will be understood that changes in the form, proportion, and the minor details of construction may be resorted to without depart- TOO plates at one edge, a stationary cutter jaw fitted between the parallel plates of the tool head and provided at one end with a beveled blade having an inclined cutting edge, bolts removably fastening the stationary cutter jaw within .the tool head, a sliding cutter jaw mounted to slide on the stationary cutter jaw between the latter and the bridge piece of the tool head, said slidingjaw being provided at one end with an integral blade beveled reversely to the blade of the stationary jaw and having an inclined cutting edge opposed to and parallel with the cutting edge of said stationary jaw, means for taking up the wear of the sliding cutter jaw, and means for sliding astationary cutter jaw rem ovably held within I said headand provided at one end with a cutting blade, a sliding cutter jaw working within said head and provided at one end with a blade opposed to that of the stationary jaw, a washer plate interposed between the sliding jaw and one side of the tool head, a set screw mounted in the tool head and working against said washer plate, and operating levers pivotally mounted at one end in said tool head and con nected with said sliding jaw, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto aitixed my signature in the presence of two witnesses.

CYRUS SUMNER HILL. Witnesses:

EDGAR M. GATE, CHAS. W. BROWN.

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