US129245A - Improvement in thrashing-cylinders - Google Patents

Description

H. MOORE;

Improvement in Thrashing-Cylinders. No. 129,245, Patentedluly 16,1872..-

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HIRAM MOORE, OF GREEN LAKE, WISCONSIN.

IMPROVEMENT iN THRASHING-CVLINiJERS.

Specification forming part of Letters Patent No. 129,245, dated July 16, 1872.

To all whom it may concern:

Be it known that I, HIRAM MOORE, of the town and county of Green Lake and State of Wisconsin, have invented certain Improvements in Thrashing-Oylinders, of which the following is a specification:

The object of my invention is to secure a thrashing-cylinder which shall be cheap to construct, durable and emcient in operation, readily adjusted, put together or taken apart, and the diameter of which may be increased without materially adding to its weight.

These objects I attain by constructing my cylinder of independent teeth clamped upon a central shaft.

The accompanying drawing shows so much only of my improvement as is necessary to illustrate the subject-matter herein claimed.

Figure lrepresents a side elevation ofmy improved cylinder with teeth of various forms secured in working position, and Fig. 2 an end View of the same. Fig. 3 represents a longitudinal central section through the cylinder, showing the teeth in one vertical plane in order to represent their various forms in one view.

The teeth are, by preference, out out of sheet-steel (their length being equal to the radius of the cylinder) of the form shown in the drawing-that is, wide at the base so as to be rigid transversely, and tapering toward the ends to insure lightness. They may also be corrugated longitudinally, as shown in the drawing, to give greater stiffness. This mode of construction insures lightness and strength as well as economy of material.

The shaft A is provided with anut or shoulder, a. The teeth are perforated and slipped on the shaft. Perforated washers or blocks relatively to the others.

B of proper width are interposed between the teeth, and the teeth and washers are firmly clamped together on the shaft by a nut, a. Where radial teeth 13 are used they may be turned on the shaft into any desired position Where diametrical teeth-plates (l are used they may be bent, as at c, to insure the proper relation to the teeth of the concave. A braced tooth, E, is also shown as constructed of two plates with a block interposed, the plates being bent and riveted together on opposite sides of the shaft. The cylinder may be perfectly bal anced by "turning the teeth into the proper relation, and its diameter obviously may be increased by lengthening the teeth with but a slight increase in weight. It may be driven at a high speed without danger of bursting or breaking the cylinder, and should the teeth strike a rigid obstacle they would turn on the shaft and thus prevent breakage.

1 claim as my invention- 1. A thrashing-cylinder tooth, B B constructed of sheet-metal, with a broad base to secure strength, and tapering toward its point to insure lightness and economy, and applied substantially as set forth.

2. The longitudinally-corrugated sheet-meta1 tooth B constructed as set forth.

3. The tooth-plate O, bent as described t strike different spaces in the concave.

4. The braced teeth E, constructed as set forth.

In testimony whereof I have hereunto subscribed my name.

. HIRAM MOORE. Witnesses:

E. O. DAVIDSON, EDM. F. BROWN.

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