US636754A - Threshing-machine. - Google Patents

Description

No. 636,754. Patented Nov. l4, I899. E. CAMPBELL. mmzsmma MACHINE.

(Application filed Mar. 2, 1898.)

2 Sheets-Sheet l.

No. 636,754. Patented Nov, I4, I899.

E. CAMPBELL. ITHRESHING MACHINE.

(Application filed Mar. 2, 1898.) .(No Model.) 2 Sheets-Sheet 2.

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UNITED STATES PATENT Price.

EZRA CAMPBELL, OF DAYTON, WASHINGTON.

THRESHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 636,754, dated November 14;, 1899.

Application filed March 2, 1898.

To all whom it may concern:

Be it known that I, EZRA CAMPBELL, a citizen of the United States, residing at Dayton, in the county of Columbia and State of Washington, have invented a new and useful Improvement in the Wind-Power of Threshing- Machines, of which the following is a specification.

This invention relates to improvements in attachments for threshing-machines; and the object that I have in view is to provide means by which the blast from the shoe-fan may be directed or deflected to traverse the full lengths of the screens or riddles of the cleaning-shoe, thus thoroughly carrying off the chaff and refuse from the shoe and reducing to a minimum the loss of grain by the latter passing over the tail ends of the riddles.

A further object is to provide an improved construction by which the blast may be defiected more or less upon the riddles of the shoe, according to the nature of the grain which it is desired to clean, to permit the passage of the air in two currents, one of which currents may pass above the cleaningshoe, and the other current'may pass below the baffle, between the latter and the shoe.

A further object is to provide for the ready attachment of the device to a threshing-machine and its convenient adjustment therein.

With these ends in view my invention consists in the novel construction and arrangement of parts, which will be hereinafter fully described and claimed.

To enable others to understand the invention, I have illustrated the preferred embodiment thereof in the accompanying drawings, forming a part of this specification, in which- Figure 1 is a vertical longitudinal sectional view through a part of an ordinary threshingmachine, illustrating my blast-diverting attachment in position above the ordinary cleaning-shoe. Fig. 2 is a detail perspective view of the blast-diverting attachment removed from the shoe-chamber of the threshing-machine. Fig. 3 is a longitudinal sectional view through the attachment represented by Fig. 2 on the plane indicated by the dotted line 3 3 of Fig. 4. Fig. 4' is aplan view of the device illustrated by Figs. 2 and 3.

Like numerals of reference denote like and Serial No. 672,299- (No model.)

corresponding parts in each of the several figures of the drawings.

To enable others to understand my invention, I have illustrated it applied to an ordinary threshing-machine in Fig. 1 of the accompanying drawings, in which 1 designates so much of a threshing-machine as is necessary to an understanding of my inven* tion. The machine has the usual chamber 2, in which is hung or supported the cleaningshoe 3, that lies in rear of the blast-fan 4 and in advance of an ordinary stacker mechanism '5. No novelty for these devices is claimed in this application,because theinvention resides in a peculiar form of blast-diverting attachment which is arranged in the shoe-chamber 2, above and in operative relation to the cleaning-shoe 3 therein, for the purpose of deflecting the blast upon the riddles or screens of the shoe, as graphically represented by the arrows in Fig. 1.

My attachment is designated in its entirety by the numeral 6, and it may conveniently be termed a baffle plate or cap, which This baffle is arranged in 'the shoe-chamber in an inclined position above the shoe 3, and the upper forward end of said baffle 6 terminates on a line in rear of the front end of said shoe 3, while the lower rear end of the baffle overhangs the shoe at or near its delivery end.

As shown by the arrows in Fig. 1, the blast from the fan passes through the riddles or screens of the shoe and strikes or impinges against the inclined baffle 6, which presents an imperforate barrier-surface to the passage of the blast and serves to deflect the blast downwardly toward the shoe before the blast passes through the throat or space between the lower rear end ofthe baffle and the delivery end of the shoe. This deflection or diversion of the blast prevents it from passing freely and unobstructedly through the enlarged rear part of the shoe-chamber 2, and the blast is thus caused to traverse the full length of the screens or riddles of said shoe 3. One advantage of this diversion or deflection of the blast resides in the fact that it is caused to traverse the screens or riddles to more thoroughly carry off the chaff and refuse from the shoe, anda further advantage due to the lies in the path of the blast from the fan 4.

employment of the inclined bafile is that the light grain carried by the blast impinges against the baffle and is deflected thereby upon the screens or riddles, thus causing the shoe to save and deliver to a suitable receptacle the grain which is deposited thereon. By arranging the baffle in the inclined posi-' tion to overhang the cleaning-shoe and so that the lower edge of the baflie lies above the rear end of the shoe a narrow space is provided between the lower edge of the suspended bafiie and the shoe, whereby the bafiie diverts the blast from the fan, and the blast is concentrated at and over the rear end of the shoe for the purpose of efiectually carrying the chaff from the shoe, while the grain is permitted to lodge and fall on the riddles of the shoe. In the preferred embodiment of my invention I adjustably support this inclined baffle in place within the shoe-chamber for the purpose of changing its angle with relation to the shoe and enabling the attachment to be used to good advantage when cleaning grains of diiferent kinds. In cleaning grains of one kind it is desirable to use the full strength of the blast from the fan 4 and provide for the ready and free escape of the refuse and chaff therethrough; but in cleaning other kinds of grain the baffle may be lowered into close relation to the shoe to in a measure obstruct the passage of the blast of air from the machine. As indicating one means for adjustably suspending the baffle within the shoe-chamber, I have shown the upper front end of the inclined baffle hinged, as at 7, to a part of the threshing-machine, while the lower rear end of the baflie is sustained by an adjustable connection 8 with said threshing-machine. This adj ustable connection 8 is represented as a bail 9, which is pivoted at 10 to the rear end of the baffle, and this bail has a central loop 11, which may be adjusted to engage with either of the series of screw-hooks 12, which are fastened to a part of the threshing-machine at variable distances from the hinged connection 7. It is evident that the bail 9 may be adjusted to engage with either of thehooks 12 of the series of spaced hooks shown by Fig. 1 to support the baflle in Variable inclined positions and at different distances from the cleaning-shoe; but I would have it understood that I do not strictly limit myself to the precise means disclosed for adj ustably suspending the bafiie within the shoe-chamber of the threshing-machine. I also contemplate making the bafile in adjustable sections which are slidably connected together to enable one section to be moved upon the other section and shorten the baflie, whereby to provide a space or opening above or below the battle 6, through which opening a part of the air current or blast may pass.

In Figs. 2, 3, and 4 of the drawings the inclined baiiie is represented as constructed in two sections 12 13, and on the sections 12 and 13 I provide two series of alined guide eyes or loops 14, which are adapted to receive the pair of guide-rods 15. The guide-rods 15 are slidably fitted in the eyes or loops 14: to sustain the two sections 12 13 in their adjusted positions, and said guide-rods 15 are fitted with hooks 7 at one end, which are attached to the threshing-machine, giving the bafiie 6 a hinge movement, and said rods are also provided with loops 10 at their other ends, to which is attached the bail 9, which may be engaged with either of the series of suspension-hooks 12. The two sections 12 13 of the bafiie may be adjusted upon each other to shorten or lengthen the baffle, and when the baflie is shortened an opening or space will be provided above or below the battle 6, and thus a part of the blast is permitted to pass through said opening above the bafiie while another part of the blast will be deflected toward the shoe 3.

By reference to Fig. 1 of the drawings it will be noted that the upper end of the baflie is suspended by the hook 7and a link to provide a space above the baffle for a part of the air-blast to pass over the forward upper edge of the bafiie. In practical use of my deflector the upper end of the baflie should be arranged below the straw-carrier in rear of the plane of the front end of the cleaning-shoe and in such relation to the working parts or elements of the threshing-machine as to permit the straw to pass on the straw-carrier over the baffie, while the grain falls upon the forward end of the cleaning-shoe.

The described construction and arrangement of the sectional baflle provide for the attainment of two currents of the air-blast delivered from the fan, and thus the blast may be controlled to carry ofi the refuse or the chaff from the shoe and the threshing-machine proper to the best advantage to the stacker mechanism 5.

From the foregoing description, taken in connection with the drawings, it will be seen that I have provided an improved attachment for diverting the blast from the fan upon a primary cleaning-shoe with a View to utilizing the full energy of the blast in carrying ofi the refuse and chaff from the shoe and to effecting economy in the loss of grain which ordinarily results when the blast is permitted to escape without obstruction. The improved attachment may be readily applied to any ordinary threshing-machine, and it is adapted to be easily and quickly adjusted according to the demands of the service.

It is thought that the operation and advantages of the invention will be fully understood from the-foregoing description taken in connection with the drawings.

The baffle may be made of wood, tin, canvas, or other suitable material and may be made in one or two sections fastened permanently or hinged to the threshing-machine.

I am aware that changes in the form and proportion of parts and in the details of construction may be made by a skilled mechanic IIO without departing from the spirit or sacrificing the advantages of my invention, and I therefore reserve the right to make such modifications as clearly fall within the scope of the invention.

Having thus described the invention, what I claim is I 1. In a threshing-machine, the combination with a shoe-chamber, a shoe, and a blastfan, of a sectional deflector having its members coupled slidably together in overlapping relation and arranged over the shoe to lie in the path of the blast after it passes through said shoe, means for pivotally supporting the upper end of the deflector in the shoe-chamher, and means for adj ustably suspending the lower end of the deflector at variable distances from the rear part of 'the shoe, said deflector being maintained at all times in an inclined position over the shoe and with its lower edge above said shoe to leave an in-.

tervening space for the passage of the blast and the chaff, whereby the deflector concentrates the blast at the rear end of the shoe, substantially as described.

2. In a threshing-machine,the combination with a shoe-chamber, a shoe, and a fan, of a deflector arranged within said chamber and. inclining downwardly toward the rear end of the shoe, means for pivotally supporting the front end of the deflector in the shoe-chamber, a bail attached to the inclined deflector near its lower end, and suspension devices engaging with said bail for suspending the lower edge of the deflector in variable relation to the shoe, substantially as described.

3. In a threshing-machine, the combination with a shoe-chamber, a shoe, and ablast-fan arranged to force a blast through the sieves of the shoe, of a sectional extensible deflector suspended at two points in the shoechamber in the path of the blast from the fan and inclined downwardly toward the tail of the shoe, said deflector having its members connected slidably together and adjustable relatively to each other between the points of suspension, whereby the length of the deflector may be changed and the width of the space between the shoe and deflector varied, substantially as described.

4. In a threshing-machine,the combination with a shoe-chamber, a shoe, and a blast-fan, of a sectional extensible deflector arranged in an inclined position over the shoe, a fixed suspension device for one end of the shoe, and a shiftable suspension device for the other end of the shoe, said deflector being -extensible between the fixed and shiftable suspension devices,for the purpose described, substantially as set forth.

5. In a threshing-machine, an extensible sectional deflector comprising sections arranged to overlap each other, guide-rods attached to one deflector-section, guides carried by the other deflector=section and slidably receiving the guide-rods, and suspension devices connected to the respective de-' fiector-sections, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

EZRA CAMPBELL.

Witnesses:

O. W. HANGER, LEE HANGER.

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