US1110196A - Traction-wheel. - Google Patents

Description

J. FAIR. TRACTION WHEEL. AM'LIOAIION FILED AUG. 8, 1910. RENEWED MAY 14, 1914. 1 ,1 1,0, 1 96.

Patented Sept. 8, 1914.

JAMES FAIR, OF NEAR SAN JOSE, CALIFORNIA.

TRACTION-WHEEL.

Specification of Letters Patent.

Patented Sept. '8, 1914'.

- Application filed August 8, 1910, Serial No. 576,158. Renewed May 14, 1914.- Serial No. 838,620.

To all whom it may concern Be it known that I, JAMES FAIR, a citizen of the United States of America, residing near San Jose, in the county of Santa Clara. in the State of California, have invented cer tain new and useful Improvements in Traction-Wheels, of which the following is a specification.

The object of my invention is to provide a traction wheel which is both simple in de sign and comparatively cheap to 1nanufac ture, and which has certain advantages over other traction wheels as will hereinafter appear.

In the accompanying drawings, which fbrm a part of this specification, like reference letters indicate corresponding parts.

Figure l is a plan View of my traction wheel. Fig. 2 is a side elevation of the same.

In the drawings A A are rims of the same diameter and size in which notches are cut on the outer edge to receive the blades B. The rims A A are constructed so as to present the relatively sharp narrow edges of the rims to the ground when the wheel is in operation, thereby avoiding the necessity of a wide surface or face to the wheel that i might hold the dirt and cause it to pack. Another advantage of narrow rims is that they cut into the ground and prevent the wheel from slipping sidewise. These narrow rims A A also allow the blades B to enter the ground with them and thereby (to velop the wheels full traction cfliciency rather than hold said blades up out of the ground and become clogged with (lll't or permit the wheel to slip on grass or other slippery surface, as in the forms where the rim presents a flat unperforated face to the ground. The blades B are secured in slots C by angle plates D bolted to B and A A, or said angle plates are fastened in place by any other satisfactory method such as brazing. The blades B are preferably placed so as to extend beyond the rims A A. so as to increase the ground contact of the face of the wheel. The blades B extexul diagonally or obliquely across the face of the Wheel rather than straight across it so that when the wheel is in motion the end of the blade V may be in contact with the ground before the end of the next blade "3: leaves the ground, thereby avoiding the slight jar that would result when the. wheel was in motion from having the blades run straight across. In oth r words, parts of two or more blades are always in contact with the surface of the ground even when the latter is hard and unyielding.

As intimated above, I prefer to secure the blades B to the rim sections A by means such as the angle pieces D. the arms or branches of which are bolted or riveted to the sides of the blades or tread pieces and to the sides of the rims respectively. The blades are set in the notches or recesses of the rims in such a Way that their outer edges are substantially flush with those of the rims. whereby the rim edges form a part of the tread surface in addition to and directed transversely of the blade edges, for the purpose hereinbefore explained. As thus constructed the face of the wheel is free from pockets and therefore does not catch or collect the soil and become clogged like wheels whose cross blades are fastened to the, face of the outer edges of the rims and which leave more or less surface or face of the wheel to be presented to the ground. thereby tending to unduly press or bake the ground over which the wheel runs.

Blades B I5 may be fastened so as to be readily removed from the rims A A and slots by taking out the bolts or rivets which are run through the plates D and rims A A and blades B. By taking out the certain blades ll or inserting more blades the space K between the blades may be quickly widened or narrowed, thus allowing the wheel to be readily adapted to the different conditions of soil over which the wheel runs.

E E are steel rods running diagonally between the two rims A and A. These rods may be numerous and large and of such material as may be necessary. The preferable Way of constructing the wheel is with a hub (1 having flanges F I of any suitable material connected by spokes H with the rim A A.

L is a space between and separating the rims A A. This space may be as wide or narrow as desired. This since permits the soil or rocks to freely pass between the rims at the point of contact of the wheel with the earth. By reason of the space L and the space K the face of the Wheel cannot become clogged with dirt or other material but is always kept clear so that the rims A A and the blades B may etfcctually grip the surface of the earth when the wheel is in operation.

My improved traction wheel is to be more adapted.

The main object of the construction of the wheel is to get the greatest amount of traction or grip with the least amount of weight and surface or face exposure to the wheel and with the least amount of baking of the soil over which the wheel passes.

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

A traction wheel comprising a hub, spokes radiating therefrom, fiat circular rims carried by said spokes, said rims being relatively Wide in a radial direction of the wheel and relatively narrow in an axial direction of the wheel, said rims'provided with radial slots, and fiat transverse obliquely set blades engaging in said slots with their extremities projecting beyond the rims, said blades being relatively Wide in a radial direction of the wheel and relatively narrow in a circumferential direction of the wheel, the tread portion of the blades being substantially [lush with the tread portion of the rims.

In testimony whereof, I ailix my signature in the presence of'two subscribing witnesses.

JAMES FAIR.

\Vitnesses:

CHAS. F. Cnornnxs, EDWIN A. VVILcoX.

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