US66966A - John v - Google Patents

Description

J. V. JENKINS. MAGHINE r011 SHEARING SHEEP.

No. 66,966,. Patented July 23, 1867.

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JOHN V. JENKINS, O F MANCHESTER, MICHIGAN, ASSIGNOR TO RICHARD B. WALKER AND LEWIS MILLER. OF AKRON,- OHIO.

Letters Patent No. 66,966, dated July 23. 1867.

MACHINE FOR SHBARING SHEEP.

TO ALL WHOM IT MAY CONCERN:

Be it known that 1, JOHN V. JENKINS, of Manchester, in the county of Washtenaw, and State of Michigan, have invented certain new and useful improvements in Machines for'Shearing Sheep; and I do hereby declare the following to be a full, clear, andexact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which-,

Figure 1 represents a perspective view of the machine complete, and as it appears when rearlyfor use.

Figure 2 represents a section through the same.

Figures 3 and 4 represent details of the machine, which will be hereafter more specially referred to.

Similar letters of refcrencc'whcre they occur in the separate figures denote like parts of the machine in all the drawings.

My invention consists, first, in a jointed wrist for communicating motion to the shears or cutters, so arranged thatthe wrist-shaft can be placed at any angle with the vibrating beam or sway bar and still accommodate itself to the conneeting-shufh My invention further consists in a presscr that can be brought against the knife or cutter at the will of the operator, or be released at pleasure, and without stopping the action of the shears, the object being tohold the cutter to the fingers with more or less force, as may be required. My invention further consists in the manner of connecting the cutters or knife-blades to the vibrating sway-bar, so that they can be readily detached for being sharpened and as readily replaced again.

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings A represents a base or stand, on which af column, B, is placed for supporting a main drive-wheel, G, and pulley or belt-wheel, D. This column, above the point where the drive-wheel is hung, may, be bent or turned down into a. horizontal, or nearly so, position, to form an extended or ex tension-arm, E, for supporting the working and driving parts of the machine. On the outer end ofthe extension-arm E, there is hung a pulley, F, around which, and aroundthe main driving-pulley D, passes an endless belt or band, G. Connected with (or in the same piece with it) the pulley F there is a second pulley, H, the shaft a supporting both. The pulleys F H, shaft a, and guard 'I', and hail J are all connected to a sleeve or socket, b, that fits over and can swing freely on theend of the extended arm E. The sleeve or soeket is held on to the arm by the belt G, and the beltis properly strained by the nut c, which works on a screw-thread on the arm E and-boars against the sleeve or socket b, and thus holds it at the adjusted distance to properly tighten the belt. The guard I is fast on or a part of the head, sleeve, or socket b, and furnishes one of the bearings for the shaft a, and may furnish both of its bearings, though one can be in the bead proper. To the bail J is suspended or attached a screw-rod, K, having a thumb-nut, d, upon it below the ball. This rod may berun up or down on or in the bail,.and when properly adjusted thc'thumbnut 02 is run'upagainst-the bail 'to hold it. The other end of the screw-rod K curries or supports a bearingblock, L, one end of which, e, forms a hearing for a shaft, f, (fig. 2,) which passes through the block L.' The other end of said block L forms a bell-shaped shield, g, for a toggle or universal joint to work in, as will be hereafter explained. On the central portion of the shaft f there is fastened a pulley, it, around which, and around the pulley H on the shaft 41, an endless belt or band, M, passes, and which turns or gives motion to said shaftf. On one of the extreme ends of the shaft f there is a fly or balance-wheel, N, .to give steadiness to its motion, and the other end carries a boil, 1', united by pins to a disk, hub, or plate, 112, to which latter is also similarly attached at diametrically opposite points another rod,j, thus forming a universal joint between the rods K j, and providing means for carrying the power necessary to drive the shears past said joint, and shielding or protecting said joint, so that it may not catch in or wind up the fleece or wool. The outer end of the rod j has a bail, n, upon it, -which is pivoted to the disk, plate, or hub o, and to this'pl-ate or hub, a-tdiametrically opposite points, is similarly pivoted a bail, 1', that is on the wrist shaft s, thus making a universal joint between the shafts j and s, and which joint, for reasons above stat-ed,'is shielded .or guarded by the bell-shaped guard k. The guard or shield not only serves as ,a protection to the universal joint, and a box or hearing for the wrist-shaft s, but has also east or wrought on to it arms or lugs, t t, for supporting and-forming t pivoted connection with theshear-stock or plate I, and'in line with this pivoted connection is the wrist or eccentric u on the capes 2 wristshaft a. This eccentric 34 works in the forked o'r recessed end 1) of a sway-bar, p, that is pivoted to the shear-stock Z at and by the screw-pin 10, so that it may vibrateabout said pivoted point. The front par-t of the sway-harp is forked, and pointed, with points turning downward, and these points take respectively into holes made to receive them in the cutting-blades a: :c. The points on the stray-bar are all that hold the cutters to the machine, and by'releasing the sway-bar, (as will now be explained) these cutters can be slippediinto or out of place in a moment, The upper portion q of the. shear-stock is pivoted city .to the under portion Z, and the screw pivot-pin w passes up through said upper shear-stock q, and has a nut, z, upon it fitting in a. depression in said upper stock, which holds the two parts of the shear-stock together. Underneath the depression in the upper stock "there-is a corresponding downward projection, 1, and against-.the'under side of this projection a thumb-nut, 2, on the screw-pin w, bears to keep it from going too low. Between thescrew-pin w and tno pivoted point y there is arranged in theupper shear-stock a stud 01 pin, 3, which bears against the sway-bar p, and. the head of this stud is attached to a. screw, .4, hy which it maybe raised or lowered at pleasure, to increase or diminish its pressure upon the sway-bar. r

The operator grasps the shears around and about the point of the screw-pin 10, the curl 5 of the upper stool: Zreceiving'the rear portion of his hand, and thus holding the shears the power to drive them is behind his-hand, or'rather the mechanism to drive themis behind his hand,-and the cutters in front 'of it. By closing his hand on the upper stock,- or drawingit towards the under one, the'stud' 3 is pressed upon the sway-bar and forcestho blades 2: more closely to the fingers 6,'the amount of pressure or force he can exert being limited byi the screw it and the thumb-nut 2, which latter cairbe adjusted or turned from the outside of the stocks. But the operator can thus atwill apply more or less'pressure upon the cutters by simply tightening or releasing his grasp ,upon the stocks. The joint at t, in line with the wrist or eceentriezo, enables the shears to bend andplny upon it to a great extent upward and backward without cramping'or' binding the wrist on tho sway-baror checking its driving m0tion.

Having thus fully described my invention, what 1 claim therein as new. and desire to secure by Letters Patent, is, -first I p I ,The jointed wrist, so arranged that the wrist-shaft can be placed at any angle from the vo'hrating-beam or sway-bar, and accommodate itself to'the connecting-shaft without binding, cramping, or impeding the motion of the stray-honor cutters, substantially as described.

I also claim-a resser, so arranged that the operator can pleasure, and whilst the cutters are in motion, apply pressure upon said cutters to hold them to the fingers or release the pressure, as ocoasiorfrnay require, substantially as described. I

I also claim the holding or uniting of the. cutters to the. sway-bar by means of holes in the former and points on the latter, to allow the cutters to be readily removed for sharpening, and replaced, substantially as described. I

JOHN V. JENKINS.

Witnesses:

JOHN W. Bren, Msnr B. RICE.

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