US231826A - Feed-cutter - Google Patents

Description

W. W. MA'RSDBN.

Peed Gutter Patented Aug. 31,1880.

INVENTOR & ATTORNEY NFETERS, PHOTO I ITHQGRAFHE 1 rrED STATES PATENT Friesa WVILLIAM W. MARSDEN, OF BALTIMORE, MARYLAND.

FEED-CUTTER.

SPECIFICATION forming part of Letters Patent No. 231,826, dated August 31, 1880.

Application filedFcbruary 27, 1880. I

To all whom it may concern Be it known that I, WILLIAM W. MARSDEN, of Baltimore, in the county of Baltimore and State of Maryland, have invented a new and valuable Improvement in Feed-Cutters and I do hereby declare that the following is afull, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a longitudinal vertical section of my improved feed-cutter. Fig. 2 is a bottom view thereof, and Fig. 3 is a detail view of the cuttor-wheel.

This invention has relation to improvements in feed-cutters; and the nature of the invention consists in the construction and novel arrangement of the parts of the machine, as will be hereinafter more fully set forth.

In the annexed drawings, the letter A designates the hopper supported by legs a, and having on its under side bearings b for the shaft 0 of the cutting-wheel B.

The shaft 0 is arranged under the hopper in the direction of its length and somewhat to one side of the same, and is provided on its inner end with a crank-wheel, 0, connected by means of a pitman, d, to the power end of a horizontally-vibrating lever, e, having its fulcrum on the under side of the hopper at a.

The lever c has an oscillating movement on its fulcrum, and its weight end is connected by means of a rod, f, to a vertically-vibrating coupler, D, arranged upon a long staple, c, on the under side of the hopper. One arm, i, of this coupler is provided with spaced perforations 0, for the adjustable attachment of the rod f, and the other arm, 6, is pivoted to the end of a pusher or feeder stem, g, extending through a longitudinal slot, h, in the bottom of the hopper, and provided on its upper end, inside ofthe hopper, with a rake-head, J. This head is preferably constructed with teeth of different lengths, and during its backward and forward movements passes over a fixed rakehead, j, on the bottom of the hopper between the cutting-wheel and the movable rake. The latter gives a forward movement to the feed, which, being caught by the fixed head, is prevented'from back ward displacement. Tile-forward and backward motion of the rake J is caused by the connection set forth of its stem or shank wit-h the crank-wheel O.

The cutting-wheel B is composed of a hub, a tire, and four spokes, dividing the rim or tire into four equal parts, the spokes upon opposite sides of the hub being in line with each other.

The spokes are lettered qq q (1 The spokes q and q are provided, close to the hull), with offsets 1", extending inward toward the hopper, and the spokes g g are provided with similar ofi'sets 1", rather nearer the rim than the hubs.

The cutters 0r knives G are secured to offsets r, pass with a sharp curve, l, to offsets r, thence, with a more flattened curve, Z, to an offset, r, on the rim, the offsets r and r at the ends of each blade being on opposite sides of the hub, so that the blade passes around by an increasing spiral curve from one side of the hub to the rim on the other side. The blades are-thus sickle shaped, and when secured to the offsets the outer end of each overlaps the inner end of the other, and each includes the hub in the chord of its arc of curvature. The curves of each blade are homogeneous, so that they may be struck out of a steel plate many at a time without waste of material. These blades work against a metallic plate, a, on the edge of the hopper, extending under the bottom of the same, and cast with ears b, in which are journaled the main shaft, and with sockets lc for the reception of the legs.

The peculiar shape of the knives and their diametrically opposite and lateral position on the wheel gives two effective cuts the whole length of the plate a at each revolution of the wheel, each cut commencing at one end of the said plate, passing thence to the other end thereof, and thence extending from both ends toward its middle portion until the straw gathered between the knife and the hopperbottom is severed.

Hinged to the under side of the middle of the movable rake J is a small lifter, p, the free end of which abuts against the inclined front wall of the recess 0 of slot h, and slightly raises the said rake during its forward movements, and during its backward movements falls back into the recess and'lowers the said rake to take fresh hold.

This device, by raising the rake-head from the bottom of the hopper, insures the forward feeding of the straw or hay, and the fixed toothed rake j prevents it from being retracted as the movable rake is retracted.

I am aware that it is not new to employ a spirally-curved knife starting at the side of the hub and extending by increasing curvature more than half around the wheel, and that sickle-shaped knives running from the hub of the wheel are common. Therefore I do not claim such devices broadly.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a hay and straw cutter, the combination, with a hopper, A, the cutting-wheel B, and the main shaft 0, having crank-wheel O, of the pitman d, the lever 0, rod f, coupler D, having arms '11 t", stem g, pivoted to arm 1" and extending through a slot in the hopperbottom, its rake J, and the rake j, fixed to said bottom, the whole arranged'to operate substantially as specified.

2. The combination, with the hopper A, having slot h, with recess 0 at one end, and the fixed stop-rake j, of the movable reciprocating feed rake J, the lifter p, hinged to its under side and working in connection With the feed-rake to raise or lower it, substantially as specified.

3. In a feed-cutter, the combination, with the shaft 0 under the hopper, of the wheel B, having bearing-spokes q q q and bearingoffsets r 'r on opposite sides of the hub, and the opposite sickle-shaped knives Gr, having the concavities toward each other, each passing from a bearing, 1", on one side of the hub,

by an increasing spiral curve, ll, to a bearing,

r, on the rim on the opposite side of the hub, thereby spanning the hub, which is in the chord of the are of curvature, substantially as specified;

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

W. 'W. MARSDEN.

Witnesses H. D. SIIRIVER, ANDREW F. OARRICK.

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