US20378A - Improvement in raking attachments to harvesters - Google Patents

Description

UNITED STATES J. A. ST. JOHN, OF JANESVILLE, WISCONSIN.

y IMPROVEMENT `IN RAKING ATTACHMENTS TO HARVESTERS. o

Specification forming part of Letters Patent-No. 20,378, dated May 25, 1555.

To all whom t may concern:

Beit known that LJ. A. ST. JOHN, of Janesville, in the county of Rock and State of Wisconsin, have invented a new and Improved Rakin g Attachment for Harvesters; and I do hereby declare that the following is afull, clear, and exact description ofthe same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a side sectional view of a harvester with my improvement applied to it, x nr, Fig. 2, indicating the plane of section. Fig. 2 is a plan or top view of the same.

Similar letters of reference indicate corresponding part-s in the two. figures.

This invention consists in a novel Way of operating a double-vibrating rake, so that it will traverse over the platform of the harvester and open and close at the desired points, as hereinafter shown, so that the cut grain will be raked from the platform and deposited in proper gavels upon the ground.

To enable those skilled in the art to fully understand and'construct my invention, I will proceed to describe it.

A represents the main frame of a harvester.

Bis the platform,having the sickle at its front end.

C is the driving-wheel,the axlect of whichis placed in the main frame.

D is a bevel-pinion, which is placed on the axle c of the wheel C. This pinion Dgears into a corresponding pinion, E, the shaft F of which has a crank, G, on its upper end. Thev crank G has a pitman, H, attachedcto it, said pitman being connected to a slide, I, which is fitted between guides b b on the main frame. The slide I has an arm, J, connected to it, the outer end of said arm being attached to a crank, K, on the upper end of a shaft, L.

To the shaft L a horizontal shaft, M, is attached, and on the shaft M a pinion, N, is placed loosely. This pinion N gears into a toothed stationary. segment, O, attached to' the main frame.

On the shaft M two arms, c c, are placed and permanently attached, said arms projecting at equal distances from each side of the shaft M. (See Fig. 2.) To the ends of these arms rake-heads E P are attached by arms d d, said arms being pivoted to the arms c c. The teeth e of the rake-head P are not 'vertical, but inclined towardV the teeth of the other rake-head, as shown clearly in Fig. 1. The two outer arms, dd, of the rake-head have their inner ends rounded and toothed, as shown atf, the two toothed ends gearing into each other.

To the shaft, M, at a point between the pinion N and the inner arm c a plate, g, is attached, said plate being at right angles with shaft M, and having a lever, It, pivoted to it.

This lever has a pin, '5, formed at one end of it, said pin projecting from the lever at rlght angles, as shown clearly in Fig. 2, and a spring, j, which bears against the lever h, has

a tendency to keep the pin forced into a hole made in the inner arm d of the rake-head P'. To the outer side of the pinion N a beveled projection, k, is attached, and also a pin, l.

The operation is as follows As the machine is drawn along, the grain is cut by the sickle, operated from the driving-wheel C by any of the known means employed for such purpose, and a reciprocating motion is given the slide I from the axle aby means of the crankG and connecting-rod H ,the slide I actuating, through the medium of the arm J and crank KM, the shaft M, and also the rake-heads P P', causing them to traverse in the arc of a circle oven-the platform B. Suppose the rake-heads P P to be at the front of the platform B. The teeth c will at this point grasp the cut grain on the platform, the rake-heads heilig kept down by their own gravity, and as the rake-heads are moved over the platform toward its back end the cut grain will be carried back by them. As the rake-heads move back, the pinion N is rotated in consequence of its gearing into the segment O, and by tlie time the rake-heads have passed off the platform and have reached the position indicated in red the pin l strikes the inner arm d of the rake-head P and elevates it, the other rake-head being simulta-A neously elevated in consequence of the gearingf, and the grain consequently is allowed to fall upon the ground. When the rake-heads are fully elevated, the piu i on the lever h is forced in the arm d of rake-head P by the spring j, and the rake-heads are retained in an elevated position While movingl toward the front end of the platform, and when they have reached the front of the platform the beveled projection k strikes the lever h, frees the pin t from the arm d of rake-head P', and the rakes I claim as new, and desire to secure by Letters fall by their gravity, the teeth e grasping the graincut while the rakes were operating as described. This gavel is raked off the platform and deposited upon the ground, as before. Thus it will be seen that the cut grain will be raked o" the platform in gavels, and the gavels kept in compact form. l

I would remark that the parts of the harvester, with the exception of the raking device, are of usual'construction.

Having thus described my invention, what I The particular means employed for operating the rakes--viz., the reciprocating slide I, arm J, crank K, and shaft M, with the rakes attached, in connection with the lever h, pinion N and segment O, the whole being arranged as shown and described.

J. A. ST. JOHN.

Witnesses:

' W. T. BENNETT,

4LUCLUS FIELD.

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