USRE3889E - Improvement in sheep-shears - Google Patents

Description

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ROBERT M. WILDER, or COLDWTER, MICHIGAN, "ron HIMsnLr, AND

HIRAM-AB. ROBINSON, A-SSIGNEE OEROBERT-M. WILDER."

wenn; Pam 1\f0. 14,840, dared May 6, 1856; reissue No. 3,889, amalgama 22, 1870.

The Schedule referred .to' in these Letten Patent axidmaking pa'xt o! the game..

1'0 all whom it may concern Be it known that Renner M. WILDER, of Goldwater, in the county of Branch and State of Michigan, did invent certain new and useful Improvements in Sheep-Shears; and we do hereby'declare that the `fhllowing is a full, clear,and exact description there?` Figures 1 and 2 are top plan views of tlreapparatus arranged to be operatedby hand, and

Figure 3 is a side View of the same turned bottom side up.

In constructing the improved shearing device'weyfirst construct a rotary cutter, G. This cutter is made jecting blades or teeth on its periphery, as represented in figs. 1 and 2.

This rotary cutter G is theurmounted ona plate,

H, which has at its front end a corresponding series of blades or teeth arranged iu a circle, or the arc of a eircle, corresponding to that of the `cutter G, the latlter being pivoter] upon the` former in such a manner as to'permit it to rotate freely, and thus canse its radial blades,asfthey sweep past the stationary blades ou the plate H, toactin connection with them as shear-blades.

A The stationary bladesH may be formed on the front end of the bed or bottom' plate I, or they may beformed of a separatepiece and secured thereto, as I nay be found most convenient in manufacture.

. The rotary cutter G may be operated in any suitable manner, it .onlybeing necessary-to impart to it a rotary motion to make it cut.

In arranging it for use as a hand-machine, we secure on the shalt of therotary cutter G a pinion, F,

which gears into a gear-wheel, E, mounted directly ir Y rear of it, as shown in the drawings.

On the shaft of this wheel E we secure rigidly a ratchet-wheel, T, and o n the same shaft pivot or hang loosely two levers, C,.each having attached to it a spring pawl, D, ananged to` engage in the ratchetwheel T, as shown in iigs. 1 and 2.

'lo theouterend of each of these levers G is pivloted another lever, B;' and the outer end of these .two levers Bare bothpivoted at the same point to an arm, L, which is connected by a spring, A, toa similar arm, L', which in turn is rigidly secured tothe base plate I, the spring A'tending always to throw the arms L and L' asunder, as represented in tig. 1.

By grasping theseltwo arms in the hand, and compressing them or crowding them toward each other,

the levers C are forced asunder at their outer ends, as represented in fig. 2, one lbeing thrown forward and the''othe backward, the one that'moves forward having its pawl D resting against a tooth of the-ratchetwheel T, and :thereby imparting to said wheel a-forward motion.. At the same time the other lever O, with its pawl, is cmrredbackward around the ratchet'- w-heel, so that, as soon as the gra-spisrelaxed on the arms L and. L', and the-spring operates to throw them asunder, then this rear level-'0, having its pawl engaged in the ratchet-wheel, operates to propel it forward, while, at the same instant and by the-same outward movement of the arm L, the front lever C, with its pawl D, is drawn back ready for another forward movement. And thus the two levers C, with their pawls, operate alternately on the ratchet-wheel T, one moving back as the other moves forward, and 'vice .'versa, the two thereby impart-ing to the ratchet-wheel. in the formof a disk, having a series of radially-pro-` ported in au adjustable plate, O,which is held in place y by-a screw, M, which works or passes through a slot in the plate J, so that, by moving this plate 'O out or in, thecutter G may be tipped so as to throwr` its teeth closer to or further from the teethon vthe plate H, as may be necessary. f

Having thus described the invention of the said ROBERT M. WILDER,

What We claim as new, and desire to secure by Letters Patent, isv 1. The rotary critter G, when constructed and arranged to operate in a. shearing apparatus, substantially as described.-

2. The cpmbination of the rotary cutter .G and thev stationary blades, bothwbeing arranged in a suitable' frame to be held or guided by-thehand, to form a portable shearing apparatus, substantiallyas set forth.

3. A shearing apparatus, consisting ot' a series of stationary blades with a rotary cutter, and the operating lmechanism herein described.

4. The combination of the double-acting pawl and 1 ratchet with the rotary cutter G, substantially as de-

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