US32729A - Grain-separator - Google Patents

Description

vA. J. VANTUYL.

I Thrashing Machine.

Patented July 2, 1861.

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UNITED STATES PATENT FFICE.

ANDREV J. VANTUYL, OF HECTOR, NEW YORK.

GRAIN-SEPARATOR.

Specification of Letters Patent No. 32,729, dated July 2, 1861.

To all whom it may concern:

Be it known that I, ANDREW J. VANTUYL, of Hector, in the county of Schuyler and State of New York, have invented a new and Improved Separator for Threshing Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying being longitudinal with the machine.

drawings, making part of this description, in which Figure 1 is a vertical longitudinal section of a threshing machine with my improved separator attached. Fig. 2 is a perspective view of the cylindrical screen Gr, detached. Fig. 3 is a plan view of Fig. 1, the threshing cylinder being broken away.

Like letters designate corresponding parts in all of the figures.

As represented in the drawings A A, is the frame supporting and inclosing the working parts of a threshing machine, of which B, is the threshing cylinder, .the concave, D the endless apron or elevator which conveys the threshed grain to the point at which it is separated from the straw. This point is indicated by the beater C, which revolves more rapidly than the apron, and shakes and loosens the straw, while it carries it upon the riddle or slat-tedcarrier E, until the grain falls through the space between D and E, onto the inclined board F, which discharges it into the end of the cylindrical screen G, This screen consists of a cylinder open at both ends, and composed of perforated sheet metal or of wire cloth, or other suitable material, which is hung on an arbor or shaft supported in bearings e f, its axis Its relation to the fan or blower H, is such that the blast is divided, a part passing through the screen G, and a portion underneath it. The spindle 9 supports the screen by crossarms 70 connected with a circular frame j, of which one should be provided at each end, and as many intermediate ones as are required to give it stability. The form of the screen may be either circular or octagonal. If the circular form is used there should be three or four longitudinal strips 29 p Fig. 2, with spikes in them placed between the circular frames 011 the interior, the oflice of which is to carry the chaff and grain up the sides and drop it more than it otherwise would, which greatly facilitates their separation. A pulley 72 is fixed on one end of the spindle bywhich it is revolved by a cross band running from one of the side ulleys of the machine, or gearing may be usec to make the connection. It is desirable to make the screen somewhat conical or diminishing toward the fart-her extremity. The bearing of the box 7 is slotted so that it may be raised or lowered by a hand screw Z, to increase or diminish the inclination of the axis of the screen, as may be required to regulate its operation on the grain. The position of the screen is directly beneath the straw carrier E, which is separated from it by a board partition m. The carrier E, moves on the rollers n n and the apron D on similar ones 0 0. These rollers as well as the blower H, are driven by bands or gear pulleys on their respective shafts, which extend through to the outside of the machine as shown in Fig. 8, and are driven from the cylindrical shaft 13. This arrangement is so well understood and common to machines of this class that a particular description here is not deemed to be necessary. The screen should revolve more slowly than either the cylinder or the fan, but the precise rate of motion is not important.

All the grain and chaff that fall on the inclined board F, are conducted directly into the screen, which acts as an efficient separator by passing the grain through its interstices and retaining the chafl until it is discharged at the farther end. The grain falls on the chute-board N, which conducts it to a place of deposit, and is subjected to the blast from the fan H, both while falling into the screen, and after passing through it, so that the lighter portion of chaff is blown through the screen, leaving only the coarse or heavier portions to be separated by it. The result is that the grain is very effectively separated and cleaned, while several important advantages are obtained. It simplifies the machine, requiring fewer parts and less power than a vibrating separator. It runs with a steadier motion, obviating the trembling and shaking which are inseparable from a machine with vibrating sieves. The direction of its motion being at right angles with that of the cylinder and other rotating parts, it tends to neutralize the vibration, and keep the machine steady. The regulation of the screen by the adjusting screw Z enables the chaff to be quickly discharged or longer retained according as its dampness, or other circumstances or condition may render necessary. From the constant changing, and throwing over and over of the chafi as it revolves, this screen Will not clog, While it separates faster than any fiat screen of the same superficial dimensions.

chines, consisting of the adjustable cylindrical rotating screen G, combined and ar- 10 ranged With the fan H, and carriers D and E, substantially in the manner and for the purpose herein shown and described.

A. J. VANTUYL.

Witnesses:

S. J. ALLIs, J. FRASER.

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