US509024A - Wheel-cultivator - Google Patents

Description

(No Modl.)

E. BINPELDT.- v i WHEEL GULTIVATOR? No. 509,024. Y Patented Nov. 21, 1893.

UNITED ,STATES` PATENT OFFICE.

EMIL EINFELDT, OF DAVENPORT, IOWA.

WH EEL-ou I TlvATo R. Y

SPECIFICATION forming part of Letters Patent No. 509,024, dated November 21, 1893.

Application iiledMarch 17, 1893. Serial No. 466.5714.- (No model.)

To a/ZZ whom it may con/cerrar Be it known that I, EMIL EINEELDT, of Davenport, county of Scott, and State of Iowa, have invented a new and' useful Improvement in Wheel-Cultivators, of which the following is a specification.

This invention relates to that class of Wheeled cultivators in which the pipe box or coupling which connects the forward end of the shovel carrying beam to the axle or frame is provided with an upright arm jointed to an uprising-rod which slides through a guide at its top and which is encircled by a spiral spring exerting a downward pressure so that -when the beam is lifted at the rear end the spring connection will tend to raise it and to relieve the operator of a portion of the weight.r

The drawing represents in perspective the forward end of the beam or drag'bar or por-A tion of the frame to which'it is jointed and the spring connections in accordance with my invention.

A represents the forward end of the beam or drag bar connected by a vertical pivot B to arms on the rear sideof a pipe box or.

sleeve C which loosely encircles the axle D, projecting in one side of the arch or main frame. The box C isprovided with an upright arm E cast thereon or fixed rigidly thereto. neoted by a horizontal pivot pin F, to the lower end of a rod G, which slides at its upper end through a guide H on the frame. This rod is encircled by astrong spiral spring I, bearing at the upper end against the guide H and at the lower end against the collar on the rod. The rod, instead of being made straight as usual is curved forward at its lower end to receive the pivot, the effect of this being to incline the body of the rod backward and throw the spring behind the arm E.

When thermachine is in operation and the rear end of the beam lowered, the spring sustains all or part of the Weight of the gangs,

The upper end of this arm is con and has practically no depressing edect thereon. As the beam is lifted at the rear end to vraise the shovels from the soil, the pivot F 1s thrown forward so that the rod actuated by the spring, tends to force the arm farther forward and therebj1 raise or assist in raising 'the rear end of the beam.

In practice the forward curvature of the rodl is found to be attended with many advantages,-tl1e principal one of which is that itl permits the other parts to be so proportioned and arranged in relationto each other that .and down while in operation, without the Springs exerting any depressing effect, the

beams being practically suspended at the differentpositions which they assume while in use, while on 'the other hand, with the straight spring rod, there is less range, and practically but one point at which the beams are suspended. Asthe beams go lower, there is an objectionable depressing laction of the springs. `Having thus described my invention, I claiml. In a cultivator the combination with the axle of the beam and the' arm E, connected therewith, the rod G curved forward at its lower end and jointed to the arm, the guide for said rod and the spring surrounding the rod, the joint between the arm and rod being 'in front of the line of action of the spring.

ing the rod between the jointed end and the guide, the said rod having the portion which carries the spring thrown rearward out of ,line with the arm. Y

In testimony. whereofvI-hereunto vset my hand, this 4th day of February, 1893,in the presence of two attesting witnesses.

` EMIL EINFELDT.

Witnesses:

MAY L. DODGE,

NATH FRENCH.

the axle frame, the spiral spring surround-

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