|Publication number||US1305303 A|
|Publication date||Jun 3, 1919|
|Filing date||Oct 19, 1917|
|Publication number||US 1305303 A, US 1305303A, US-A-1305303, US1305303 A, US1305303A|
|Inventors||Victor E. Nelson|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (3), Classifications (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
V. E. NELSON,
APPLICATION FILED 0CT.I9.1917.
1 ,305,303. Patented June 3, 1919.
i 'nvawto b V/CTO/i E. NELSON.
Gamma VICTOR E. NELSON, OF DETROIT, MICHIGAN.
Specification of Letters Patent. Patented J 11119 3, 1919 Application filed October 19, 1917. Serial No. 197,418.
To all whom it may concern Be it known that I, VICTOR E. NELSON, a citizen of the United States, residing atDetroit, county of Wayne, State of Michlgan, have invented a certain new and useful Improvement in Tractor- Wheels, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and usethe same, reference being had to the accompanying drawings, which form a part of this specification.
This invention relates to tractor wheels, and its object is a wheel comparatively simple and inexpensive in construction provided with retractable cleats adapted to project into the ground to give a great traction and prevent slipping of the wheel in driving the machine. A further object of the invention is to provide cleats that are automatically projected and retracted as the wheel revolves, the arrangement being such that the cleats may be made to project on the lower or ground contacting side of the wheel and to retract on the upper side thereof or vice versa as occasion may demand, and for the purpose hereinafter more fully described. A further object of the invention is to provide a wheel having a series of cleats adapted to be automatically projected or retracted.
as the wheel revolves, and a manual means to control the operation thereof to vary the extent to which the cleats may be projected and further, to set the apparatus so that the cleats may be projected either on the upper or lower side of the wheel.
A further object of the invention is a device having automatically projecting and retracting cleats as stated, whereby an accumulation of mud or earth behind the cleats may be avoided and a scraper attachment that may be brought into use on the upper side of the wheel periphery when the cleats are retracted to remove the accumulation of dirt therefrom. These and other objects and the several novel features of the invention in its preferred form are hereinafter more fully described and claimed and shown in the accompanying drawings in which Figure 1 is a side elevation of a wheel embodying my invention.
Fig. 2 is a horizontal section thereof.
Fig. 3 is a section taken on line H of Fig. 2. v The wheel may be of any approved type preferably a wire wheel having the outer rim 1 and the inner hub members 2 and 3 secured to therim by means of spokes 4:. The hubs 2 and 3 are provided with laterally extending flanges 5 and-6 facing one toward the other as indicated in Fig. 2 and are spaced apart as shown, to receive the inner rlng member 7 which rides therebetween. This ring member is grooved to receive the apertured ends of the shanks 8 of the blades or cleats 9, the shanks being pinned to the ring as will be readily understood from Fig. 3. A peripheral plate 10 covers the space between the flanges 5 and 6, as will be understood from Fig. 2, being bolted to the periphery of the flanges. Thus the two upper members are secured together, the plate 10 being apertured to allow movement of the shanks 8 of the cleats as required in the operation of the device, the slots being elongated somewhat to allow movement of the shanks on the pivots. Both the plates 5 and 6 are provided with similar slots 11 and a pin is provided extending through the ring member 7 and riding in the said slots so that on rotation of the wheel and hub members the ring member is made to turn therewith and carry the blades or cleat members 9. The ring member 7 is centrally apertured to receive the eccentric 12 which extends into the space between the hub members 2 and 3 and is itself provided with a hub 13 on which the hubs 2 and 3 of the wheel may revolve. This inner hub 13 of the eccentric extends outward to one side of the wheel preferably the inner side, and a hand lever 14: is secured thereto by means of which it may be turned. As will be understood from Fig. 1 the handle may occupy the position shown in full lines at. which time the eccentric member 12 is on the lower side ofrthe wheel, and the cleats are projected into the ground surface and retracted on the upper surface. By turning the handle 14: to reverse position, the eccentric is exactly reversed in position so that the cleats are retracted from on the lower periphery of the wheel and projected onto the upper ,periphery. V a
With the usual tractor for soft ground a cleat of considerable depth is required to prevent a spinning of the wheel, and even then with a very soft earth the mud binds up behind the cleats and the wheel may spin.
With this arrangement on revolution of the wheel and of the ring members 7 carrying the blades or cleat members, the rotation of the wheel about the eccentric 7 forces the blades outward on the lower side of the wheel and withdraws them as it approaches the upper side preventing an accumulation of earth behind the cleats and a scraper attachment behind the wheel 1 may beprovided attached to a convenient part of the vehicle as a frame member 10, and may be manually positioned over the upper side of the wheel periphery to scrape the earth from the said wheel. The wheel rim is apertured to allow the cleats or blades to be reciprocated in and out as thewheel revolves and as will be noted from the drawing, guides 53 are formed on the inside of the wheel rim to hold the cleats or blades in the aperture therein, In many States tractors with deep cleats are not allowed to travel the usual roadways inasmuch as it cuts the surface of the same. Heretofore the cleats had to be removed from the wheels whenever it was desired to travel the highway. By this arrangement with the device in use in the field the cleats are made to project as shown in Fig, 1, the handle 14 being positioned as shown by full lines, and when it is desired to travel the highway the scraper member 15 is turned from position or removed and the handle turned to reverse the position of the eccentric member 12, which projects the blades on the upper side of the periphery and retracts them on the lower. Various devices may be used to turn the-hub member '13, but I do not desire-to confine myself to the exact construction shown in the illustration, showing only one form of mechanism that may be utilized for the purpose.
The wheel may be used to rotate with the axle in which case the axle extends through the aperture of the hub member 13 which is loose thereon, the axle being secured solidly tothe hub 2. In the case of chain driven wheel the axle is simply not secured to the'hub 2 but a sprocket may be secured thereto, and in either case, the hubs 2 and 3 during the progress of the machine rotate on the hub '13 of the eccentric member, the hub 13 being held from rotation with the wheel bymeans of the hand lever 14: or other mechanism adapted for the purpose.
The hand lever lei is held in position by means of a spin 20 extending into an aperture and a bracket 21 located on one side of the wheeland secured to the framework of the machine. The bracket 21 has several apertures QQthe'rein, and the wheel may be positioned with the pin 20 in any one of the several apertures, whereby the eccentric may be variously positioned about the center of rotation of the wheel, and the extent of projection of the blades into the ground surface varied as may be required by the condition of the ground. A similar bracket 23 is provided on the opposite side of the wheel for securing of the lever 14k in position opposite to that shown in Fig. 1.
By the described arrangement of parts a wheel of comparatively inexpensive construction is provided that is practically selfcleaning in operation, the cleats reciprocating through apertures in the wheel rim in which they fit comparatively closely and by reversing the position of the eccentric the cleats may be made to project on either the upper or lower side of the wheel as is required in use.
Having thus brie-fly described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States is 1. In a tractor wheel,a wheel rim having slots in substantially equidistantly spaced relation about the periphery, radially positioned blades reciprocable in the slots, a hub to which the rim is secured, the hub consisting of two parts in spaced relation secured together, an eccentric band between the hub members to which the blades are attachechan eccentric-positioned within the rim having a hub on which the Wheel hub vmay ride, and means for turning the hub to vary the [relative position of the eccentric about the cen ter of rotation'of the wheel.
2. In a tractor wheel, a wheelrim having a series of slots substantially equidistantly spaced about the periphery, radially positioned blades reciprocable in the slots, ;a Wheel hub formed of two similar partscentrally spaced, an eccentric having a hub on which the wheel hub rides and extending into the space between the parts of the wheel hub, an eccentric band riding on the eccentrio, the blades being pivotally secured to the band, a shield covering the space between the wheel hubs and being: apertured to allow the shank of the blades to extend therethrough, said shield providinga means of securing the hubs together, the eccentric hub extendingbeyond the hub of the wheel on one side and a lever secured to the said extension whereby the position of the cocentric about the center of rotation of the wheel may be altered, and means for securing the lever in various set positions to vary the extent of projection of the blades.
3. A tractor wheel comprisingawheelrim having slots substantially equidistantlyspaced about the periphery, a series of radially positioned blades reciprocablein the slots, a wheel formed of two parts centrally spaced, an eccentric ring between the said parts'to which the bladesareattached,the
hub members having radial slots, a pin extending through the ring and engaging in the slots whereby rotation of the Wheel rotates the ring, an eccentric for the ring, means for releasably holding the eccentric in stationary relation during rotation of the wheel whereby the said ring is made to rotzt'te about the eccentric and project the In testimony whereof, I sign this specification.
VICTOR E. NELSON.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.
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