US228971A - John f - Google Patents

Description

2 Sheets-i-Sheet 1. J. F. APPLEBY. Device for Raising and Lowering Harvesters.

Patented June 22, 1880.

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2 Sheets Sheet 2.

J. F. APPLEBY.

Device for Raising and Lowering Harvesters.

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Patented June 22, 1880.

-N. PETERS, PHOIGUTHOG PHE ASH NGYON D C UNITED STATES PATENT OFFICE.

JOHN F. APPLEBY, OF BELOIT, WISCONSIN.

DEVICE FOR RAISING AND LOWERING HARVESTERS.

SPECIFICATION forming part of Letters Patent No. 228,971, dated June 22, 1880.

Application filed November 2, 1877.

' and platform provided with myimprovement;

Fig. 2, a rear view of the same; Figs. 3 and 4, views of parts detached; Fig. 5, partial side view, showing a modification of my improvement.

Like letters designate corresponding parts in all of the figures.

In the drawings, A represents the harvester-frame; B, the platform; 0, a single driving-wheel, and D a grain-wheel at the outside of the platform.

My improvement is applied to a drivingwheel, 0, the axis or shaft E of which is mounted in revolving sleeve-bearings G G, which have an up-and-dowu movement in slotted standards H H, attached to the barvester-frame, the adjustment of the latter thereon being effected by circular cogs or pinions a a on the said bearings matching and traveling in racks b b at one side of the slots of the standards, the opposite side of the slots being smooth to allow the pinions to turn and be guided therein, the end of the wheel-shaft also projecting through and movin gin smaller slots 0 c in the standards, to guide the movements in the standards more accurately and with less friction.

To effect the up-and-down adjustment at this side of the frame the following construction is employed: One of the sleeve-bearings G has a pulley, I, thereon, to which a cord or belt or chain,K, is secured, and upon which it is wound in the proper direction, each bearing being coupled to the shaft, so that both sleeves have equal and simultaneous movements in their standards. The cord or chain K extends from its pulley, preferably, but not necessarily, dowpward under a guide-pulley, L, on the frame below the adjacent standard H, and thence to a winding-shaft, M, mounted on the frame at the back thereof, so that, winding it upon the said shaft, the bearing-pinions a a are caused to revolve and travel downward on their racks, thereby raising the frame to the same extent, and by winding the cord or chain from the shaft the pinions are caused to travel upward on their racks by the weight of the harvesterframe and parts supported thereon, which thereby adjusts itself downward.

The cord-winding shaft M is situated so as .to be readily reached by the driver sitting in the seat N, and has, or may have, a handwheel, (I, or its equivalent, by which to handle it. The shaft also is provided with a ratchetwheel, f, into which a detent, g, takes to hold the shaft from turning or unwinding the cord or chain.

The platform B or platform side of the frame is adjusted up and down by means of the winding and unwinding of another cord or chain, 0, on the same winding-shaft M, so that the manipulations of the latter effect both adjustments simultaneously and equally.

The device for effecting the adjustment of the platform by the cord or chain 0 is substantially as follows: The grain-wheel D is mounted in a bearing-arm, I, which is pivoted at h in the platform, so that the latter is moved up or down, supported by the arm which turns on the wheel-shaft. The cord or chain 0 is attached to a lever, t, which projects upward from the bearing-arm, its direction being such that a forward or backward movement thereof causes a downward or'upward movement of the said hearing. The cord or chain 0 extends from this lever, first backward and around a guide-pulley, p, at the rear outward corner of the platform, and thence back of the platform to the shaft N. Thus by winding up the cord or chain the lever is moved backward and the platform or frame raised thereby, and by unwinding the cord from the shaft M the weight of the platform causes it to assume a lower position by turning its bearing arm downward.

The proportional movements of the two adjusting devices above described are such, with the construction above described, that the cord or chain 0 must wind upon a smaller circumference than the cord or chain K; also, the lever 2' must project above the platform and be in the way; hence the cord or chain K would ordinarily require to be wound upon a spool or drum, 1, of greater circumference than the shaft itself, as shown in Fig. 2, or else the shaft would have to be quite small and correspondingly weak when the cord or chain 0 is wound thereon. But I have applied a modification of the device, as shown in Fig. 5, by which the shaft M may have an equal size where both of the cords or chains are wound thereon. For this purpose a less movementis given to the lever t of the wheel-bearing, while the cord or chain winds upon the full size of the shaft M. The said cord or chain is secured at one end to the platform, as shown at m, Fig. 5, near the rear side thereof, and extends thence forward around afriction'sheave, n, or its equivalent, in the lever t, and thence back again around the guide-pulley p and to the shaft M. Thus the movement of the lever i at the pulley n is only half as much as the winding of the cord or chain in the shaft M, and the desired result is effected.

What I claim as my invention, and desire to secure by Letters Patent, is-

The main drive-wheel axle, moving in segmental racks and having the pinions and chain wheel or pulley rigidly secured to it, in combination with the cord or chain attached to or wrapping said wheel and connecting it with a shaft or Windlass for rotating the axle and effecting the adjustment of the frame, substantially as specified.

JOHN F. APPLEBY.

Witnesses:

J. S. BROWN, A. A. HOSMER.

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