US107721A - Improvement in harvester-rakes - Google Patents

Description

l `Aires RANK, or SALEM, omo.

IMPRQVVBMENT IN HARVESTER-RAKES.

.i Speet'catt'oajbrming part of Letters Patent No. 107 ,721,)clated September 27, 1870.

To all. w/mm tt may` cneem i Be it known that I, AMOS RANK, of Salem, in the county of Columbiimaand State of Ohio, have invented certain new and useful Im*` provements in Harvester-Rakcs, of which the nl)tna harvester, so much only of the machine being shown as is necessary to illustrate the invention claimed.

Figure l isa plan of the machine; Fig. 2, a

i view, in perspective-,of the raking mechan ism detached, with the switch closed; Fig. 3, a similar view of the same, with the switch open; Fig. 1, a rear elevation of the same; Fig. 5, a side elevation ofthe same; Fig. 6, a plan oi' the cam, with a fixed switch; Fig 7, a plan -view of the movable switch detached.

The construction of the machine, forming no part ot' the subject-matter herein claimed, and being fully shown and described in my prior patents, need not be repeated in detail here. I shall, therefore, confine my description tothe parts necessary to the carrying out ofmy invention.

The drag-bar AV supports a shoe, B, and platform C, as usual. A frame or standard, D, mounted on the shoe, supports a tubular shaft, E, on the top of which aV cam, F, is secured. This cam is, by preference, a single one, and made of the form shown in the drawing. Y

By a single cam, I mean a cam having a single track only for thefriction-rollers which guide the rake-arms, in contradistinction to a doublewalled cam, vor a cam having two "tracks, on or between which the rollers run.

, A switch, G, ou the cam, oscillates horizontally on a pivot, g. A rock-shaft, H, turns in f bearings in the tubular shaft E and carries on its upper end acrank, Ii, pivoted to the switch i G. The lower end of the rock-shaft is operated by the driver, from his 'seat on the machine,

bya crank-arm and link, h', as described in my patent of November 2, 1869, aforesaid, but Y may be operated in other well known ways. A latch, I,`oscillates ou au inclined pivot, i, near the back edge of the cam. A stud-axle,

JJ, on the frame D,.carriesa bevel-pinion,j,4

which is driven by a chain and sprocket-wheel,

or other equivalent means, and in 'turn drives` y a crown-whee1 or bevel-gear, k, turning on the tubular shaft E. Arms L oscillate freely, in a vertical plane around their pivots, in lugs on the top of this crowlrwheel, in the usual way. These arms are bifurcated, and carry beaters and rakes, as shown in my patent of' Novemthe switch, and thus causes the rake to sweep the gavel from the plat-form.

As the roller moves backward, its inner face bears against the outer edge of the switch, and swings it backwardou its pivot until it abuts against a stop,f, on the cam. This is a valuable improvement, as by it the switch is automatically closed by the rake-arm itself,

and I am thus enabled to dispense with a spring to retract the switch. As the roller escapes from the switch, the arm L strikes an incline or riser, M,which lifts the arm until its roller strikes the latch I, which opens and allows the roller to pass upward to the inner side of the cam on which it runs, until the switch is again opened.

It is obvious that the relation of the rakes and beaters might be changed, and also that one or more of the rakes might be omitted, and yet the machine would still do good work.

By opening the switch every time it is closed by the passage of a roller, each rake in succession would discharge a gavel, thus producing au almost continuous swath.

I propose sometimes to use a fixed switch, N, ofthe form shown in Fig. 6, to replace the movable one G, in crops where a continuous discharge is desired, as by this means each rake will in turn sweep a gavel from the platform without any attentionl from the driver.

This capacity of modifying the frequency of the discharges-is important in cutting oats, barley, and other crops which it is preferred to let lie on the stubble in aswath until cured.

l. The switch, constructed as described, to oscillate horizontally on its pivot, and with a flange, (j, to hold the rake down upon 'the platform while sweeping the gavel therefrom, as hereinbefore set forth.

2. The combination of the single cam, coustructcd as described, with the switch constructed as described, to oscillate horizontally on its pivot, to hold down the rake while sweeping the gavel from the platform, and automatically to be closed by the direct action ofthe rake, as hereinbefore set forth.

3. The combination of the cam, the switch oscillating horizontally on its pivot, and automatically closed by the direct action of the rake, the crank-arm pivoted directly to the switch, and the rock-shaft, for opening the switch, passing through the axis of rotation of the raices. all these parts being constructed to operate in combination, substantially as hereinbefore set forth.

4. The combination of the roller on the rakearm, the cam, and the horizontally-moving oscillating switch, automatically closed by the direct action of the rake while raking off its gavel, substantially as set forth.

5. The combination of the roller on the rakearm, the cam, the switch automatically closed by the direct action of the rake, and the latch to return the rake to the upper side of the cam, substantially as set forth.

In testimony whereof I have hereunto subscribed my name.

. AMOS RANK.

Witnesses SAML. T. STREET, WrLLrs UADWALLADER.

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