US633625A - Straw-carrier for threshing-machines. - Google Patents

Description

No. 633,625. Patented Sept; 26, I899.

C. M. STEVENSON.

,STRAW CARRIER FOB THBESHING' MACHINES.

(Application 11511 Sept. 19, 1239s. v (No Model.) 2 Shanta-Sheet l.

No. 633.625. Patented Sept. 26, I899.

. C. M. STEVENSON.

STBAW CARRIER FOR THRESHING MACHINES.

(Application filed Sept. 19, 1888.) (No Model.) 2 Sheets-Sheat 2.

JFWWM a \IZiZy-S,

a: bum: mans co. Pnorauiuo. WASHXNGTQN. n. c.

UNITED STATES CHARLES M. STEVENSON,

PATENT OFFICE.

OF HARVARD, ILLINOIS.

STRAW-CARRIER FOR THRESHING MACHINES.

SPECIFICATION formingpart of Letters Patent No. 633,625, dated September 26, 1899.

Application filed September 19, 1898. Serial. No. 691,338- (No model.)

To (all whom it may concern.-

Beit known that 1, CHARLES M. STEVEN- SON, a citizen of the United States of America, residing at Harvard, in the county of McHenry and State of Illinois, have invented certain new and useful Improvements in Straw-Carriers for Threshing-\Iachines, of which the following is a specification.

My invention relates to improvements in the straw-elevator attached to the rear or tail end of a threshing-machine, which is commonly called the straw-carrier; and the purpose of the invention is to cause the carrier to deliver the straw at any desired spot with greater certainty. In operation these straw-carriers serve to receive the straw from the thresher and carry it to and deposit it upon a stacker or into a shed or other inclosure, and sometimes even to deliver it to the stack, although ordinarily an auxiliary device is employed for the latter purpose. In all of these uses it is important that the straw be deposited with certainty at the point desired, and great difficulty has been, encountered because of the tendency of the wind to blow the straw away from such point. This difficulty I have overcome by means of an attachment applied to the carrier, which may be adjusted to carry the straw wherever desired.

The invention is illustrated in the drawings presented herewith by means of seven figures, of which Figure 1 is a perspective view of the tail end of a threshing-machine provided with my improvements. Fig. 2 is an enlarged detail of a portion thereof in side elevation. Fig. 3 is a detail perspective of certain separated parts. Fig. 4 is a sectional view looking downward from the line 4 4 of Fig. 2. Fig. 5 is a sectional view in line 5 5 of Fig. 2 looking in the direction of the arrow 5. Fig. 6is a vertical longitudinal section of the entire apparatus in line 6 6 of Fig. 7, and Fig. 7 is a plan of the same with the hood removed.

Referring to the figures, A is the frame of an ordinary thresher, B the straw-carrier, attached to the rear thereof, and C C the ordinary ropes, by means of which said strawcarrier is sustained at any desired angle. An ordinary straw-elevatorD, composed of three belts and cross-slats, is run by a shaft E at the lower end and passes over pulleys 6 upon a shaft E at the upper end. To the latter end of the carrier and upon the opposite sides thereof I secure two brackets F F, fastened to the carrier by means of holes f, through which suitable bolts are passed and bored at f to receive the shaft E. At the lower extremity of a depending portion f is a laterally-extending boss f also bored at J, to receive a shaft G. (See Fig- 2.) The boss itself serves as a pivot for a plate H, secured to a pivoted extension 0 of the carrier B, and in an upwardly extending portion of the bracket is journaled a pulley I, over which is run a rope or wire J fastened to the extension 0 at 0 and wound upon a Windlass K, journaled in the frame of the straw-carrier. The Windlass serves to raise or lower the free end of the extension 0 and the wire to sustain said extension when in operation. The extension 0 is provided with a hood 0, having a comparatively large mouth 0 and a contracted discharge-opening o directed downward and formed by carrying the top of the hood down substantially to the plane of the extension 0.

Said extension 0 is provided with a conveyer o constructed like the elevator of the strawcarrier and run by means of the shaft G, which is geared to the shaft E by means of sprocket-wheels e g and a sprocket-chain L. As the extension 0 swings upon the axis of the shaft Or, this gearing is not disturbed by the adjustment of the extension to any desired angle, and therefore such adjustment canbe made without stopping the machine. This is a great advantage because of the saving of time effected. Furthermore, when the machine is to be transported the extension can be swung down as seen in Fig. 6, or, indeed, still farther, and secured beneath the straw-carrier without disturbing any of the belts. A pair 3f hooks M upon the end of the extension are adapted to engage staples N of the carrier to hold the extension in the last position.

The invention is of especial value when the straw is to be delivered to a stacker or discharged through a suitable opening into a shed, for in these cases whatever straw is blown aside from the stacker or the opening must be gathered up and carried to the proper place by hand. It will be seen that the ordinary straw-carrier (shown at B) discharges the straw in the best possible position for the wind to catch itthat is to say, it is projected in an upward direction, so that its momentum tends to carry it beyond and above the end of the carrier, and it is only after said momentum is lost that it falls downward. The extension 0 receives the straw from the carrier, checks the upward movement by means of the hood 0', which at the same time shields the straw from the wind and afterward, as the straw falls downward,

projects it directly toward the desired spot. The extension is vertically adjustable at its free end, so that it may be brought down as near to the stacker as is practical without interfering with the passage of the straw.

The pivoting of the extension upon the boss f frees the shaft G from the weight thereof and reduces the friction caused by the rotation of said shaft.

Vhile the construction above described is the preferred one, I recognize the fact that great variation therefrom is possible without departing from the principle of the invention, and therefore desire notto limit myself to the exact form and arrangement of parts herein shown.

I claim as new and desire to secure by Letters Iatent- The combination with a straw-carrier,of the brackets, F, F, downwardly-extending arms, f upon said brackets, perforated bosses, 1, upon said downwardly-extending arms upwardly-extending arms upon said brackets, pulleys, I, journaled in the upwardly-extend.

CHARLES M. STEVENSON.

Witnesses:

J. C. BLAKE, W. I. RICHARDSON.

Images