US784971A - Threshing-machine. - Google Patents

Description

No. 784,971. PATENTBD MAR. 14. 1905,

- v. o. BAILEY.

THRESHING MACHINE.

APPLIOATION FILED FEB. 3, 1904.

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' V. G. BAILEY.

THRESHING MACHINE.

APPLICATION FILED r23. 3, 1904.

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W ml I I 1 '/j 7 I I 1 M yei ai' CBasy r No. 784,971. PATENTED MAR. 14, 1905.

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T'HRESHING MACHINE. APPLIOATION FILED FEB. a, 1904.

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' Z1 fi'zyaiaz vr UNITED STATES Patented March 14, 1905.

PATENT OFFICE.

VICTOR C. BAILEY, OF HALLOCK, MINNESOTA, ASSIGNOR TO ADVANCE THRESHER CO., OF BATTLECREEK, MICHIGAN, A CORPORATION OF MICHIGAN.

THRESHlNG-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 784,971, dated. March 14, 1905. Application filed February 3, 1904. Serial No. 191,848.

To (tZZ whom it 7I'l/(bZ/ concern.-

Be it known that I, VIoToE C. BAILEY, acitizen of the United States, residing at Hallock, in the county of Kittson and State of Minnesota, have invented new and useful Improvements in Threshing-I\Iachines, of which the following is a specification.

This invention relates to threshing -machines, and has for its object to combine in a IO single organized machine simple, effective, and improved means for thoroughly separating the grain, chaff, and straw and for thoroughly cleaning the grain and separating it from cockle, weed-seeds, and other foreign matter.

To these ends my invention consists in the combination and arrangement of parts hereinaftcr described, and particularly pointed out in the claims following the description, reference being had to the accompanying drawings,

forming a part of this specification, wherein- Figures 1 and 1 are views illustrating the thresher in longitudinal section. Fig. 2 is a side elevation of the shoe. Fig. 3 is a bottom plan view thereof, and Fig. 4c is a detail view 5 illustrating the means for adjusting the inclination of the shakingscreens.

Referring to the drawings, the numeral 1 indicates the threshing-cylinder, and 2 the concave, both of said parts being of well-known 3 construction. In rear of the concave 2 is arranged an open grate comprising a frame 3, provided with transverse parallel grate-bars 4, said grate extending rearward from the concave and curving upward. Arranged above the grate is a guard comprising a plurality of parallel stripst, slightly separated from one another and attached at their opposite ends to the frame of the machine.

Journaled in the sides of the machine is a 4 double crank-shaft 5, andloosely mounted on cranks 6 of said crank-shaft are fork-heads 7, in which are rigidly affixed downwardly-projecting parallel fork-teeth 8. To the forkheads 7 are attached rigid upwardly-projecting arms 9, and to the upper ends of said arms are attached links 10, which at their other ends are pivotally connected, as at I1, to the upper portion of the frame of the machine. The straw and grain as they leave the cylinder and concave are discharged upon the open 5 grate 4, the upper rearwardlycurved portion of which operates to prevent the straw and grain from being thrown too far through the separator. As the crank-shaft revolves the teeth 8 of the forks move in close proximity to the cylinder and the grate-bars and engage the straw, and as the crank-shaft continues to revolve they move rearwardly and upwardly, describing a curve at their lower ends ap proximately coincident with the curvature at 6 the open grate, and during this movement they lift the straw and deposit it on the first shaker, which will presently be described. During the movement of the rake-teeth they move between the parallel strips at, which constitute the guard, and after they have deposited the straw on the shaker the rake-heads move in a reverse direction in curved paths. Said rake-teeth are retracted from between said strips for a certain distanceas they move back toward the frontof the machine and any straw that may be retained by said rake-teeth is stripped therefrom by the guard-strips. As shown, the double crank-shafts are so arranged as to cause the forks to operate alternately, one fork moving forward to carry the straw up and over the grate while the other fork is moving rearwardly to assume a position. to engage the straw. Further description of the construction and operation of the 0 grate, guard, and forks is deemed unnecessary, as the same is fully shown and described in United States Letters Patent granted to John B. McCutcheon on July 19, 1898, No. 607,699. 8 5

To the rear end of the frame 3 is attached an upwardly and rearwardly inclined board 12, the upper end of which is provided with rearwardly and approximately horizontally extending fingers 14, preferably formed of 9 metal, which project over the forward edge of the shaker 15. The shaker 15 comprises a rectangular frame, the bottom of which is formed of parallel transverse slats 16, which are arranged parallel to each other at suitable distances apart, each slat being inclined in an upward and rearward direction. From such construction and arrangement it will be perceived that a slot or space exists between the rear upper end of each slat 16 and the lower forward end of the next succeeding slat. To the upper sides of the shaker are fastened serrated or toothed pieces 17, preferably of wood, arranged parallel to the sides and spaced at convenient distances across the face of the shaker for moving the straw rearwardly. The fin-ward edge of the shaker-frame is provided with a transverse board 18, to which is fastened a series of metal prongs or teeth 13, between which the fingers 14 of the strawboard 12 project, said strawboard operating to direct the travel of the straw, which is carried forward by the forks and deposited on the shaker 15. The shaker 15 is supported at its forward ends by links 19, which are journaled in suitable bearings 20, attached to the sides of the machine-frame, and at its rear end the shaker is suspended by links 21, which at their upper ends are journaled in bearings 22, attached to the sides of the machine-frame, and at their lower ends are pivotally connected to the shaker-frame, as at 23. By supporting and suspending the shaker-frame in this manner it will be evident that as the shaker-frame is moved rearwardl y it will also have imparted to it an upward movement, and, conversely, as said shaker is reciprocated in the opposite direction it will have a downward movement. Secured to the under side of the shaker-frame is a transverse shaft 2 1, to the ends of which are pivotall y attached pitmen 25, the forward ends of said pitmen being connected to the upper ends of levers 26, said levers being pivotally connected intermediate their ends, as at 27, to the frame of the machine and at their lower ends to a shaft 28, which is fixed transversely to the outer side of a reciprocating grain-pan 29. To the shaft 28 is loosely connected one end of a pitman 30, the other end of said pitman being journaled on the crank of a shaft 31, journaled in suitable bearings attached to the sides of the machine-frame and driven in any suitable manner.

The grain-pan 29 comprises a rectangular frame arranged beneath the cylinder and concave, the grate 1, and the shaker 15 and is provided with a serrated or toothed bottom, which may be conveniently formed of-overlapping slats, the upper surfaces of said slats being inclined upwardly and rearwardly and the rear edges thereof being approximately vertical, whereby as said grain-pan is moved rearwardly the grain is caused to move with it; but during its forward movement, the reciprocatioi'i of said pans being very rapid, the grain remains stationary, and hence the grain is fed rearward] y by the grain-pan with a stepby-step motion in a well-known manner. The frame of the grainmi is suspended from the sides of the machine-frame by links 32, and, as before stated, the shaft '28, which connects the pitman 30 to the lovers 26, is journaled in suitable bearings on the under sides of the frame of the grain-pan. It will therefore be obvious that as the crank-shaft 31 is rotated the pitman 30 will be moved backward and forward,thus imparting a reciprocating movement to the grain-pan and at the same time will impart an oscillating movement to the levers 26, which in turn will move the pitmen 25 to and fro, thus imparting a reciprocating movement to the shaker 15; but owing to the manner in which said shaker is supported and suspended, as before described, said shaker, in addition to its reciprocating movement, will have imparted to it an upward and downward movement in reversely-inclined directions.

The straw and grain as it is thrown onto the grate 4 from the cylinder and concave is engaged by the oscillating rake-teeth, the straw being thrown rearwardly onto the shaker 15 in the manner before described. The loose grain falls between the grate-bars onto the grain-pan, and as the latter is reciprocated the grain is moved toward the rear of the machine, as before set forth. Such grain as may have been thrown up upon the shaker 15 with the straw falls by gravity through the straw and through the spaces between the slats constituting the bottom of the shaker 15 owing to the rapid vibratory or shaking movement of said shaker and falls upon the grain-pan below.

Arranged in the rear of and in a slightlylower plane than the shaker 15 is a shaker 33, similar in all respects to the shaker 15 before described, excepting that its forward end instead of being supported by links it is mounted on a crank 34, which latter is driven in any suitable manner. It will be evident that as the crank rotates the shaker 33 will be reciprocated back and forth and will also have imparted to it an upward and downward movement in an inclined direction in the same manner as the shaker 15.

Arranged beneath the rear end of the shaker 15 is afan 36, surrounded by a casing 37, said casing being closed about its periphery, excepting at a point between the rear end of the shaker 15 and the forward end of the shaker 33, and at that point the casingis made in the form of a discharge-spout 38, which is adapted to be controlled by a hinged gate 39.

Arranged beneath the shaker 33 is a downwardly and forwardly inclined chute or return-table 40, which at its forward end is supported on links tl, which are pivotally connected at their lower ends to the sides of the macliine-frame, and at its rear end is suspended from the sides of said frame by links 42, which are pivotally connected at their lower ends to the frame of the return-table. Attached to the forward end of the returntable 40 is a shaft or rod 43, and to said rod are attached at its opposite ends links M, the other ends of said links being pivotally connected to two depending suspension-arms 45. The links 44 are pivotally attached to the suspension-arms 45 intermediate the ends of the latter, and the upper ends of said suspensionarms are pivoted to the sides of the machineframe, and their lower ends are pivotally connected to the rear end of an extension 46 of the grain-pan, the forward end of said extension being hinged, as at 48, to the rear end of said grain-pan. The extension 46 is provided with an apertured bottom formed of transverse slats 46, which are arranged at slight distances apart and parallel with each other,

said slats being preferably inclined upwardand rearward, as shown.

Arranged beneath the rear end of the grainpan and its extension 46 is a shaking-shoe 49. the rear end of which is supported on links 50, which are pivotally connected at their upper ends to said shoe and at their lower ends to the sides of the machine-frame. The forward end of said screen is suspended by levers 51, which are pivoted, as at 52, to the sides of the machine-frame and at their upper ends are loosely connected by links 53 to the rear end of the grain-pan. Hence it will be evident that the reciprocating grain-pan, will through the medium of the links 53 and the levers 51, impart to the shaking-shoe 49 a combined reciprocating up-and-down movement. The lower end of the shaking-shoe 49 overhangs the edge of a conveyer trough or casing 54, in the bottom of which casing is arranged a spiral conveyer 55. Forward of the conveyer-casing is arranged a fan 56, surrounded by a casing 57, provided with an outlet 58, controlled by a hinged gate 59. Arranged over the open upper end of the conveyer-casing is a hinged deflector 60, which operates to prevent the blast from the fan from blowing the grain from out of the conveyer-casing. Arranged in the rear of the shaking-shoe 49 is a conveyer trough or casing 61, in which is arranged aspiral conveyer 62. The conveyer chutes or troughs 54 and 61 are arranged to discharge their contents at one side of the machine. The operation of this portion of the machine is as follows: The crank-shaft .34 is driven in any suitable manner and operates to impart to the shaker 33 a combined reciprocating up-and-down movement. As the straw and chaff is thrown by the shaker 15 onto the shaker 33 it is subjected to a blast of airfrom the fan 36, which operates to separate the chaff from the straw and blow the chaff out forcibly from the rear end of the thresher, the shaker 33 operating to discharge the straw onto the usual strawcarrier. (Not shown.) Should any grain have been carried by the straw and chaff from the shaker 15, it would fall by gravity through the slatted bottom of the shaker 33 onto the return-table 40. The return-table 4O will have imparted to it a vibratory movement through the medium of the levers 45 and connecting-rods 44, and any grain falling thereon will be discharged onto the extension 46 of the grain-pan and from the latter will fall onto the shaking-sieves 63, through which it is sifted and falls by gravity to the screens 63 below, from which it will be delivered into the chute or trough 54, and from the latter it will be discharged by the spiral conveyer 55. As the grain falls from the grainpan and its extension onto the shaking-screens 63 it will be subjected to a blast of air from the fan 56, and said air-blast will operate to blow the lighter portionssuch as cockle, chaff, and the like-through the rear of the machine and onto the straw-carrier. (Not shown.) The rear end of the sieves can be elevated by means of a device 68, a detail of which is shown in Fig. 4.

66 is a casting bolted to the side of the shoe to support the rear end of the sieves.

67 is an iron clip fastened to the bottom of the top sieve to hold it apart from the lower sieve.

Headed grain and grain which is not thoroughly threshed, being too coarse to drop through the openings in the sieves 63, is carried over the ends of the sieves and falls into the trough 61, from which it is discharged, by means of the spiral conveyer 62, into an elevator 64, which conveys it by means of a raddle back to the cylinder, into which it falls by gravity, and so goes through the machine again. Dirt and weed-seeds which are finer than the grain drop, with the grain, through the sieves onto the screens 63, the mesh of which is too fine for the grain to drop through, but allows the dirt and weed-seeds to pass through onto the bottom 65 of the shoe, from which it escapes onto the ground through an opening 66 in the bottom of the shoe. The sieves and screens are removable and can be taken out of the shoe and other sieves and screens put in to suit the different kinds of grains to be threshed.

The sieves 63 and 63 are also capable of being set at different inclinations to suit different seeds, as is most clearly shown in Fig. 4 of the drawings. Referring to said figure, the numeral 67 indicates one of the sides of the shoe 49, and to the inner surface of said side is fixed a metallic plate or casting 68. Fitted against said stationary plate or casting is a removable plate or casting 69, provided at its lower end with an inwardly-projecting flange 70. The movable plate 69 is vertically slotted, as at 71, and through said slot and through the plate 68 and the side of the shoe passes a headed bolt 72, provided on its outer end with a thumb-nut 73.

It will of course be understood that the above construction is duplicated on the other side of the shoe. The sieves rest on the flanges 70, and by loosening the thumb-nuts 73 the plates or castings 69 may be adjusted vertically, and when the proper adjustment has been secured the thumb-nuts are tightened up, thereby holding the movable plates in ail].

their adjusted positions, and for this purpose the adjacent faces of the movable plates 69 and fixed plates 68 are serrated.

Having described my invention, what I claim is- 1. In athreshing-machine, the combination with a cylinder and a concave, of a rearwardly and upwardly inclined slatted shaker arranged in the rear of the cylinder, pivoted supportinglinks arranged beneath the forward end of the shaker, pivoted suspension-links arranged above the rear end of the shaker, a grain-pan suspended beneath the shaker, a driven crankshaft for vibrating the grain-pan, a transverse rod fixed to the underside of the grainpan, levers pivoted intermediate theirends and jointed at their lower ends to said rod, links pivoted at their respective ends to the upper ends of said levers and to said shaker, a pitman connecting the said crank-shaft and transverse rod, a second shaker arranged in the rear of the first-mentioned shaker, the forward end of the second shaker being arranged beneath the rear end of the first shaker, a driven shaft connected to the under side of the forward end of the second shaker, pivoted v suspension-links connected to the rear end of the second shaker, and a fan arranged to discharge an upward blast of air between the ends of said shakers.

2. In a threshing-machine, the combination with a cylinder and a concave, of a rearwardly and upwardly inclined slatted shaker arranged in the rear of the cylinder, pivoted supporting-links arranged beneath the forward end of the shaker, pivoted suspension-links arranged above the rear end of the shaker, a grain-pan suspended beneath the shaker, a driven crank-shaft for vibrating the grainpan, a transverse rod fixed to the under side of the grain-pan, levers pivoted intermediate their ends and jointed at the lower ends to said rod, links pivoted at their respective ends to the upper ends of said levers and to said shaker, a pitman connecting the said crankshaft and transverse rod, a second shaker arranged in the rear of the first-mentioned shaker, the forward end of the second shaker being arranged beneath the rear end of the first shaker, a driven shaft connected to the under side of the forward end of the second shaker, pivoted suspension-links connected to the rear end of the second shaker, a fan arranged to discharge an upward blast of air between the ends of said shakers, a suitably-supported return-table arranged below said second shaker, an arm pivotally supported by the framework and jointed to said grain-pan, and a link connecting said arm and return-table.

3. In a threshing-machine, the combination with a cylinder and a concave, of a rearwardly and upwardly inclined slatted shaker arranged in the rear of the cylinder, pivoted supporting-links arranged beneath the forward end of the shaker, pivoted suspension-links arranged above the rear end of the shaker, a

grain-pan suspended beneath the shaker, a

driven crank-shaft for vibrating the grainpan, a transverse rod fixed to the under side of the grain-pan, levers pivoted intermediate their ends and jointed at the lower ends to said rod, links pivoted at their respective ends to the upper ends of said levers and to said shaker, a pitman connecting the said crankshaft and transverse rod, a second shaker arranged in the rear of the first-mentioned shaker, the forward end of the second shaker being arranged beneath the rear end of the first shaker, a driven shaft connected to the under side of the forward end of the second shaker, pivoted suspension-links connected to the rear end of the second shaker, a fan arranged to discharge an upward blast of air between the ends of said shakers, a suitablysupported return-table arranged below said second shaker, an arm pivotally supported by the framework and jointed to said grain-pan, a link connecting said arm and return-table, a shaking-shoe operable from said grain-pan,

troughs, containing spiral conveyers, situated at the opposite ends of said shoe, and an exhaust-fan located at the forward end of the shoe, said exhaust-fan serving to blow off the chaff and the like from the mass supported on the shoe.

4. In a threshing-machine,the combination with a cylinder and concave, of a rearwardly and upwardly inclined slatted shaker arranged in rear of the cylinder, pivoted supportinglinks arranged beneath the forward end of the shaker, pivoted suspension links arranged above the rear end of the shaker, a grain-pan suspended beneath the shaker, a driven crankshaft for vibrating said grain-pan, a transverse rod fixed to the under side of the grainpan, levers pivoted intermediate their ends and loosely connected at their lower ends to said rod, links pivoted at their respective ends to the upper ends of said levers and to said shaker, and a pitman connecting the said crank-shaft and transverse rod, substantially as described.

5. In a threshing-machine, the combination with a cylinder and concave, of a rearwardly and upwardly inclined slatted shaker arranged in rear of the cylinder, a second slatted shaker arranged in rear of the first-named shaker,

means for independently vibrating said shakers, a reciprocating grain-pan arranged beneath the first shaker and provided at its rear end with a hinged slatted extension, means for vibrating the grain-pan, a downwardly and forwardly inclined return-table arranged beneath the second shaker, suspension-links for supporting the rear end of said table, pivoted supporting-links arranged beneath the forward end of said table, suspension-arms pivoted at their upper ends to the frame of the machine and at their lower ends to the rear end of the said extension-links connecting said arms with the forward end of the return-table, substantially as described.

6. In a threshing-machine, the combination with a cylinder and a concave, of a rearward] y and upwardly inclined slatted shaker arranged in the rear of the cylinder, a second slatted shaker arranged in rear of the first-mentioned shaker,means for independently vibrating said shakers, a reciprocating grain-pan arranged beneath the first-mentioned shaker and provided at its rear end with a hinged slatted eX- tension, means for vibrating the grain-pan, a downwardly and forwardly inclined returntable arranged beneath the second shaker, suspension-links for supporting the rear end of said table, pivoted supporting-links arranged beneath the forward end of said table, suspension-arms pivoted at their upper ends to VICTOR O. BAILEY.

Witnesses:

RALPH O. BLETHEN, Z. B. WooLLEY.

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