US720835A - Bolt-cutter. - Google Patents

Description

' UNITED STATES PATENT Ormes.

ARTHUR L. MOORE, OF SPRINGFIELD, MASSACHUSETTS.

BOLT-CUTTER.

SPECIFICATION forming part of Letters Patent No. 720,835, dated February 17, 1903. Application filed September 23, 1902. Serial No. 124,542. (No model.)

To @ZZ whom, t 1v1/tty concern,.-

Be it known that I, ARTHUR L. MOORE, a citizen of the United States of America, and a resident of Springfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Bolt-Cutters, of which the following is a full, clear, and exact description.

This invention relates to improvements in eral class of bolt-cutters is common and Well' known, and the present improvements relate particularly to the combination,with the handle-levers and the cutter-carrying levers, of the adjusting-levers and the means for effecting the adjustment thereof and maintaining them when adjusted against accidental displacement or derangement; and the object of the improvements relating to the portion of the implement mentioned is to provide the adjusting-lever appliance in and as a part of the bolt-cutter for its entirely efcient utilization in a manner of unusualsimplicity, involving a minimum of parts, permitting the construction of the parts practicablyand with inexpensive mechanical operations, permitting an arrangement which is direct, so that the assemblage is easy, as is also the replacement of a part should occasion therefor arise, and whereby the adjusting operations are not only most easily and quickly performed, but the adjusting-lever when brought to any position of adjustment will be held thereat by the abutment thereagainst of adjustingscrews bearing in opposite directions at sides oppositely disposed in relation to the point of pivotal connection of the adjusting-lever to and upon the handle-lever; and the invention consists in a bolt-cutter having combined therein,with the handle-levers and the cutterlevers, the adjusting-levers, with the means for effecting and holding such levers in their adjustments, all substantially as hereinafter particularly described in connection with the accompanying drawings and as specified in the claims.

Reference is to be had in the accompanying drawings, in which- Figure l is a side view of the bolt-cutter, considerable portions of the free ends of the handle-levers being broken off and a portion of one of the handle-levers being drawn in longitudinal section. Fig. 2 is a top edge or plan view of Fig. l. Fig.- 3 is a top edge or plan view of one of the handle-levers, the adjusting-lever being removed from connection therewith. Fig. 4 is a cross-sectional view, 4 L-indicating the line of section therefor.

Similar characters of reference indicate corresponding parts in all of the views.

In the drawings, AVA represent the handlelevers, pivotally connected at their forward ends at o., and at the forward end of each handle-lever is an adj listing-lever B, the same being. to Vall intents and purposes in the operation of the implement as a ilxed and-rigid part of the handle-lever, and to the forward ends of the adjustinglevers are pivotally connected, at b, the cutter-levers O C, these having the cuttingedges c c at their forward portions, said levers U O being fulcrumed at d d, the fulcrums being held bya cross-strip D to insure the opening and closing of the cutter-leversA equally. In this well-known form of bolt-cutter the opening of the handie-levers causes the moving together of the forward ends of the fixed levers B and the pivotal connections l? h, causing' the cutterlevers to swing on the fnlcrums d o7, and the cutting ends c c to open from each other, and of course the closing together of the handlelevers eects the closing together of the cutters for their severing action on the protruding end of a bolt.

Each handle-lever A at its forward end portion is constructed of cross-sectionally outwardly-open trough shape, as indicated at f, and in the recess thus produced the tongue or ear-lug g is entered with a close lit, the pivotbolt h forming the rocking connection between the adjusting-lever B and the handlelever.

A screw 'i passes with a screw engagement through theportion of the adjusting-lever B IOO which is forward of the pivot h and has its inner end in bearing against the base of the aforesaid recessf, said screw having a polygadjusting-lever in its proper adjustment with the greatest rigidity, permitting no lost motion, looseness, or lash.

Should the cutters after considerable use become worn or ground away at their meeting edges, so that the cutter-carrying levers would require readjustment by having the normal positions of their fulcrum connections b h approached more or less, it is only necessary to loosen by outwardly turning the screws i t', whereby the forward ends of the adjusting-levers may be equally swunginwardly in just the proper extent, and then to screw the rearwardly-disposed screwsj j outwardly to a hard bearing against the rear arms of the adjusting-levers.

I am aware that a bolt-cutter of this general class has been constructed wherein the handle-lever has a narrow recess therein in which is pivotally anchored an eyebolt, which protrudes through the adjusting-lever, made in the form of a skeleton frame and pivoted at its rear end to the handle-lever, having at its forward end an abutment-screw passing therethrough with a screw engagement and having a pressure bearing against the outer edge of the handle-lever, the aforementioned eyebolt pivoted in the recess in the handle-lever, protruding through an aperture in the adjusting-lever, and receiving at the outer edge of the adj usting-lever and at a place quite near to the adjusting abutment-screw a nut; but any such specific construction and arrangement I do not claim; but,

Having thus described myinvention, what I do claim and desire to secure by Letters Patent, is-

1. In a bolt-cutter of the class described in combination, the handle levers pivotally jointed at their forward ends and having an outwardly-opening recess to the rear of said pivotal connection, the adjusting-levers each having between its ends an inwardly-extending ear-lug fitting and pivotally connected in said recess of the handle-lever, a screw applied t-o exert an outwardly-crowding force against the rear arm of the adjusting-lever, and another screw applied to constitute an abutment between the forward arm of said adjusting-lever and a forward portion of the handle -lever and the intermediately-fulcrumed cutter-levers having their rear ends pivotally jointed to the forward ends of the adjusting-levers.

2. In a boltcutter of the character described in combination, the handle-levers pivotally jointed at their forward ends and having their forward portions of outwardly-opening trough form, the adjusting-levers having between their ends, the inwardly-projecting ear-lugs g, fitting within the recesses in the handle-levers and pivotally connected therein, a screwj screw-threading through each handle-lever to the rear of the adjusting-lever pivot and having its outer end protruding and in bearing against the inner surface of the rear arm of the adjusting-lever, another screw z' screw-engaged through the forward arm of the adjusting-lever and having its inner end in abutment against the base of the recess in the handle-lever, and the intermediately-fulcrumed cutter-levers having their rear ends pivotally jointed to the forward extremities of the adjusting-levers, substantially as described and shown.

Signed by me at Springfield, Massachusetts, in presence of two subscribing witnesses.

ARTHUR L. MOORE.

Witnesses:

WM. S. BnLLows, A. V. LEAHY.

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