US502473A

US502473A - Thrashing-machine

Info

Publication number: US502473A
Authority: US
Publication date: 1893-08-01
Anticipated expiration: 1910-08-01

Description

(No Model.) 3 Sheets-Sheet 2..

W. N. SPRINGER.

THRASHING MACHINE. No. 502,473. Patented Aug. '1, 1893.

I ATTORNEK' (No Model.) 3 Sheets-Shet 3.

W. N. SPRINGER. THRASHING MACHINE.

No. 502,473. Patented Au 1, 1898.

WITNESSES: l/VVE/VTOR V 9?; v Br ATTORNEY.

UNITED STATES PATENT ()FFICE.

WILLIAM N. SPRINGER, OF FORTVILLE, INDIANA.

THRASHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 502,473, dated August 1, 1893.

Application filed February 20,1893. Serial No. 463,045. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM N. SPRINGER,

a citizen of the United States, residing at Fortville, in the county of Hancock and State of Indiana, have invented a new and useful Improvement in 'lhrashing-lvlachines, of which the following is a specification.

My invention relates to an improvement in thrashing-machines.

The objects of myimprovement are, to cut the straw of the wheat, or other grain to be thrashed, into short lengths, so as to facililate its passage past the thrashing-cylinder, and to discharge it from the machine by means of an exhaust-fan, all as hereinafter fully set forth. The accompanying drawings illustrate my invention.

Figure 1 represents a central longitudinal section of the machine. Fig. 2 represents a side elevation of the receiving end of the machine. Fig. 3 is a plan of the same, having the top of the casing removed. Fig. 4 represents an elevation of the discharging end of 2 5 the machine. Fig. 5 represents a section at a- Fig. 1.

The principal portion of the machine does not differ from ordinary thrashing machines, except, that the rear of the discharging end,

o instead of being open as usual, is closed by doors.

In the drawings, A, indicates the thrashingcylinder; B, the blast-fan O, the grain-trough, and D, the tailings-trough.

The ordinary mechanism for separating the grain from the straw is arranged in the body of the machine between the thrashing-cylin- ,der and the blast-fan.

,1 For the purpose of cutting the straw into 4 short lengths before it reaches the thrashingcylinder, I mount, on the main frame of the macine, above the thrashing-cylinder and in w the passage leading thereto, a rotary cutter,

1 E, having knives F, F, which extend entirely across the passage leading to the thrashingcylinder, and which operate in connection with a fixed cutter H.

For the purpose of automatically feeding the material to be thrashed to the cutters, I

provide a chute, I, having on its under side an endless conveyor-belt, J, above which is arranged a series of rotary knives, K, which operate to cut the bands of the sheaves in the usual well known manner. That end of the carrier-belt which is next to the cutter E, passes over suitable pulleys on a fixed shaft, L, and the other end of the belt passes over a shaft, M, mounted in the outer end of the chute, which is vertically adjustable by means of an extension leg, N.

Arranged above the conveyor-belt J, is a second shorter conveyer-belt, 0. One end of the conveyer formed by said belt 0 passes over pulleys on a fixed shaft, P, mounted in the chute 1; while the other end of the conveyer passes over pulleys on shaft R, which is mounted in vertically adjustable bearings which are held normally downward by weighted levers, S, S. The arrangement of conveyers J and O, is such that a passage, Z, is formed having converging upper and lower moving walls leading to the cutter; the inner or narrow end of the passage being automatically adjustable to the thickness of the mass of material passing through it. The opposed surfaces of the conveyer-belts J and O, are driven in the same direction, as indicated by arrows, by suitable intermediate connecting mechanism connecting the shafts on which the belts are mounted with a moving portion of the thrashing-machine, as the shaft of the thrashing-cylinder.

At the discharging end of the machine, I form a closed chamber, T, into which the straw is discharged after separation from the grain; doors G being provided which permit access to the chamber.

Leading from chamber T is a chute, U, which communicates with the eye of the fan-chamber V, inclosing the exhaust-fan W. Extending from the fan-chamber is a dischargespout, X, which is vertically and horizontally adjustable so as to discharge the straw at any desired point upon the stack.

For the purpose of giving greater steadiness to the operation of the thrashing-cylinder, 1 mount the rear carrying-wheels Q, under that end of the machine, and the forward carrying-wheels under the discharging end.

The operation of my machine is as follows: The bundles of grain, as they come from the field, are thrown into chute 1, upon conveyerbelt J, the bundles extending longitudinally along the belt. The bundles are conveyed by the belt beneath the band-cutters, K, by which the bands are severed, and are then carried forward into the passage Z, and, passing between the fixed end of conveyer J as it passes over shaft L, and the weighted adjustable end of conveyer-belt O as it passes under shaft R, the straw is spread out into a thin stratum, and, being forced over the cutter-bar H and beneath the revolving knives F, is cut into short lengths which fall into the thrashing-concave and are subjected to the action of the thrashing-cylinder. The straw being short the grain is easily separated therefrom, and the thrashing-cylinder is run at the required speed with much less power than when the straw is introduced in the usual manner. The straw after passing the thrashing-cylinder is delivered, together with the chaff, into the closed chamber T, by means of the usual well known separating mechanism and the blast-fan B. The straw and chaff are removed from chamber T through the chute U, and are discharged through the spout X, by means of the exhaust-fan W I claim as my invention In a thrashing-machine, the combination with the thrashing-cylinder, a revoluble cutter arranged to out the straw into short lengths on its way to said cylinder, and suitable separating mechanism arranged to receive the straw and grain after it leaves the thrashing-cylinder, of a closed chamber arranged to receive the straw and chaff after it leaves the separating mechanism, an exhaustfan arranged to draw the material from said chamber, and a discharge-spoutleading from said exhaust-fan, all combined and arranged to co-operate substantially as set forth.

NILLIAM N. SPRINGER.

Vitnesses:

H. P. H001), V. M. H001).