US17280A - Improvement in harvesters - Google Patents

Description

M. G. HUBBARD.

`Harvester Gearing.

Patented May 12, 1857.

ATFNT OFFicF.

M. G. HUBBARD, OF PENN YAN, NEW YORK.

IMPROVEMENT IN HARVESTERS.

Specification forming part of Letters Patent No. 1*?,2S0, dated May 12, 1857.

To LZZ whom it may concern:

Be it known that I, Mosns G. HUBBARD, of Penn Yan, in the county of Yates and State of New York, have invented certain new and useful Improvements in Harvesters; and I do hereby declare and ascertain said improvement as follows, reference being had to the accompanying drawings thereof, in which- Figure l is a side elevation of that part of the machine referred to in the description. Fig. 2 is a plan of the same; Fig. 3, the fork and shifting-crank detached.

My improvement herein described consists of a new device for shifting the gear of harvesters.

In going to and returning from the field, and often under other circumstances, it is desirable that the machine should be thrown out of gear, so as not to subject the cutting apparatus to unnecessary wear, &c. Various devices have been invented for this purpose; but none of them seem to combine all of the necessary elements of convenience, economy, ample Wearing-surface, and perfect reliability. As it is often desirable to throw the machine out of gear instantly, in order to avoid obstacles, and as each part o f these machines must be constructed as cheaply as possible, and with a View to great durability, and as it is all important that the gear-shifter should be perfectly reliable, so as not to drop out of gear while at work, I have endeavored to combine all these qualities in the device herein described.

Fig. l in the drawings hereto attached shows the frame of the machine; and a is the bevel- Wheel shaft, on one end of which I fasten an adjustable collar, C, with a groove, g. In this groove I fit the shifting-fork f, and in this fork the short crank d is fitted. The shaft of this crank extends up through the standard s, and on the top of this crank-shaft a short handle, h, is affixed. Thus by taking hold of the said handle and turning the crank half of one revolution the gear will be moved twice the length of the crank. This arrangement gives a great leverage in a very small space, and therefore works very easily. The shiftingfork j should be arranged with respect to the revolution of collar c, so that the rotation of the collar while at work will tend to keep the machine into gear, and when thrown out of gear the same cause will keep it out of gear. Therefore by the aid of this device the machine will hold itself into gear or hold itself out of gear, requiring none of the unreliable notches or pins usually employed to hold harvesters into or out of gear.

Fig. 2 shows the collar c attached to the shaft.

Fig. 3 shows the shifting-fork detached. To prevent the short prong of the shifting-fork being pressed against the bottom of groove g and causing unnecessary friction, lugs may be so arranged as to prevent the handle making more than half a revolution in either direction, as clearly seen at Z Z in Fig. l.

Having thus fully described my improvement, what I claim therein as new, and which I desire to secure by Letters Patent, is-

The combination of the shifting-fork f, short crank d, and handle 7L, or their equivalents, for throwing the machine out of or into gear, when constructed and arranged substantially as and for the purposes set forth.

M. G. HUBBARD.

Witnesses HEZEKIAH BRADFORD, W. H. STANsBUFY.

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