US4956A - Straw-cutter - Google Patents

Description

F; 0. SAMPSON.

Straw Cutter.

No. 4,956. Patented Feb. 5, 1847.

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UNITED STATES PATENT OFFICE.

FREDERICK D. SAMPSON, .OF .EAST s-BB-QQKFIELD, .MASSACHUSETTS.

, STRAW-GUTT'ER.

Specification of Letters Patent No. 4,956, dated February 5, 1847.

To all whom it may concern Beit known that I, FREDERICK D. SAMP- soN, of East Brookfield, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Knives of Machinery for Cutting 'Straw, generally termed Straw-Cuttersf and I do hereby declare that the nature of the same is fully described and represented in the following description and accompanying drawings, letters, figures, and references thereof.

Of said drawings Figure 1, exhibits a topview of a straw cutting machine having my improvement applied to it. Fig. 2 is a central vertical and longitudinal section of it.

In said figures A denotes the cylinder which carries the cutting knife, or knives.

B is the cutting knife.

0 is a transverse metallic bar, against which the cutting knife runs, and over and upon which, the straw or other material to be cut is made to pass from the trough D. The said bar constitutes what may be considered, in some respects as a knife, for its front and upperedge is beveled down, so as to make an acute angle of about forty five degrees, with its front face or edge, or

that next adjacent to the cylinder A. The angular cutting bar should have its upper edge raised above the bottom of the trough as seen in Fig. 2. The said bar extends entirely across the trough and should be as long as the cutting knife upon the cylinder.

The cylinder A is composed of two circular heads a, 6, (both being of the same diameter) united to a cylinder 0 of lesser diameter-the whole being mounted and fixed upon a horizontal shaft 6 properly sustained so as to revolve in bearings f f applied to the frame the'said cylinder A being arranged with respect to the feeding trough as seen in the drawings.

9 is a toothed pinion placed and fixed upon or near one end of the shaft e. It engages with and is revolved by a gear wheel k fixed upon a horizontal crank shaft '5 disposed as seen in the drawings. The said shaft 2' may be put in motion (so as to impart motion to the cylinder A) by power applied to a crank upon it, or in any other Way.

being so curved the said plate has a reen-,

tering angular notch n, 0, p, out out of one edge of it and from the two ends toward the central part of it as seen in Fig. 1. The lower edges of the said angular space are ground sharp so as to form two cutting knives. When said knife edges are revolved or made to move, when the cylinder is revolved they act in concert with the angular knife bar C and diagonally to its edge after the manner of shears, and toward its center. The material to be cut is moved over and beyond the edge of the knife bar 0, and as the knife passes by the bar, it cuts diagonally in twodirections through the mass.

The pressure of the knife upon the straw in the act of cutting through it, forces it down upon the angular or knife bar 0 to such a degree, as to press the bar into the mass, and hold it firmly, and prevent it I from advancing while the cutting knife is plane perpendicular to the axis of each straw. By means of the angular position of the blades 12, 0, 0 p or edges of the notch 11,, 0 77, the straws are all forced toward each other in the act of cutting them and as the edges n 0, 0 p, descend through them, they each cut them with what is termed a drawing stroke, so that it will be seen that the said blades, not only cut with drawing strokes, but also in paths, inclined to the axes of the straws. This double action the feeding trough, and operating together substantially in the manner'and for the puspose as above specified.

In testimony whereof, I have hereto set my signature this ninth day of July A. D. 15

FREDERICK D. SAMPSON. Witnesses:

EDWARD Brass, MARY ANN Buss.

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