US431904A - Traction-wheel - Google Patents

Description

T... NH WW N m A R T (No Mqdel.)

No. 431,904. Patented'July 8, 1890.

UNITED STATES;

PATENT OFFICE.

JAMES LEWVIS, OF OROIVLEY, LOUISIANA.

TRACTION-WHEEL.

SPECIFICATION forming part of Letters Patent No. 431,904, dated July 8, 1890.

Application filed May 15 1890. Serial No. 351,927- (No model.)

To all whom it may concern.-

Be it known that I, JAMES LEWIS, a citizen of the United States of America, residing at Crowley, in the parish of Acadia and State of Louisiana, have invented certain new and useful Improvements in Traction -lVl1eels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon which form a part of this specification.

This invention relates to certain new and useful improvements in that class of tractionwheels which are provided with blades or teeth adapted to move inwardly and outwardly through the periphery of the wheel to contact with the earth and prevent the wheel slipping; and it consists in providing a traction-wheel with a movable eccentric, to which the inner ends of the blades are attached, said eccentric being connected to a movable casing, so that the relative position of the eccentric with respect to the axle may be varied and the blades projected or retracted, said movable block being spring-actuated to move automatically, according to the condition of the soil; and the invention further consists in the construction and combination of the parts, as will be hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side view of a traction-wheel constructed in accordance with my invention. Fig. 2 is a sectional view. Fig. 3 is a detail view of the eccentric and plate for connecting the same with the wheel or axle. Fig. 4 is a side view of the movable sliding block.

A refers to the traction-wheel, which is mounted upon an axle B. This tractionwheel may be of ordinary construction, and is provided with a hub 13, which is loosely mounted on the axle or spindle B or keyed thereto, so that the axle or spindle will rotate therewith. To the spokes of the wheel or to the hub B thereof, as may be desired, is rigidly secured a disk A, which is provided with openings at a, into which pass pins 0 0, carried by a circular plate 0, which is placed over the hub, said plate being provided with a central opening of a greater diameter than the hub and with a projecting flange d, which lies snugly within the circular recess D of the movable block E. This ring 0 is provided on one side with a series of recesses e e, within which lie the inner ends of the blades F, the opposite ends of which pass through transverse slots in the periphery or rim of the traction-wheel. The ends of the blades F can be secured within the recesses by pins orbolts, as shown, or their ends may be notched so as to lie over a raised edge formed on said ring 0.

The block E, in addition to the circular recess D hereinbefore referred to, has an ellip tical openin D of sufficient size to pass over the end of the hub, and the opposite side of this plate E is either recessed or provided with parallel projecting strips, within which lie a fixed bar G, which is provided at its upper end with a staple or eye, through which passes a rod carried by the plate E, said rod being encircled by a spring, which bears upon the staple and upon the movable plate E, so as to normally hold the blades projected beyond the periphery of the traction-wheel. By this construction I provide a tractionwheel the blade of which will be normally projected and which will be moved inwardly when the ground is hard or when the blades strike against an obstruction.

By providing the bar G with an opening and the plate E with one that will register therewith a pin or other device may be in serted, so as to hold the ends of the blades within or flush with the periphery of the.

lower edge of the wheel. In such cases where the traction-wheel is made up of cast metal, the rim being connected to the hub byaweb, the disk A can be dispensed with and the perforations a formed directly in the web of the wheel.

Having thus described my invention, I claim- 1. In combination with a traction-wheel, a rotating ring or disk having blades connected thereto, a spring movable or sliding plate yielding with respect to the hub of the traction-wheel and having a recess within which a portion of the ring or disk lies to carry the same therewith, said plate being adjustable so as to carry the ring or disk to one side of the center of the traction-wheel and form an eccentric, and means for connecting the same to the traction-Wheel so that it will be movable thereon, substantially as set forth.

2. In a traction-Wheel, a fixed plate secured adjacent to the hub thereof, a ring or disk movable upon the hub and provided With projecting pins for engaging with openings in the plate A, blades connected to said ring, the ends of which pass through openings in the periphery of the Wheel, and a slidingframe engaging with the movable ring, said sliding frame being spring-actuated, substantially as set forth.

3. In atraction-wheel, a disk or plate A,

having openings a, a ring having a projecting portion cl and recesses 6, Within Which the ends of the blades lie, a sliding plate E, having a circular recess D and an elliptical opening D, and a spring mounted on arod carried by the plate E to normally project the blades beyond the periphery of the traction- Wheel, said rod engaging with a fixed bar,

substantially as set forth. 7

In testimony whereof I affix my signature in presence of two Witnesses.

JAMES LEWIS. Witnesses:

H. BoDEMiiLLER, O. B. LEWIS.

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