US1576379A - Spade lug for tractor wheels - Google Patents

Description

March'9 1926. 1,5763% L. A. "rut-mm SPADE' LUG FOR TRACTDR WHEELS Filac'i August 11, 1924 Patented Mar. 9, 1926.

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LEONARD TURNER, OF SANTA ANA, CALIFGRNIA.

SPADE LUG FOR TRACTOR WHEELS.

Application filed August 11, 1924. Serial No. 731,443.

To all whom it may concern:

Be it known that I, LEONARD A. TURNER, a citizen of the United States, residing at Santa Ana, in the county of Orange and State of California, have invented new and useful Improvements in Spade Lugs for Tractor Wheels, of which the following is a specification.

This invention relates to improvements in spade lugs for tractor wheels.

It is an object of the invention to provide an improved traction device adapted to be secured upon the periphery of the tractor wheel.

Another object of the invention is to provide an improved device for the above stated purpose which has an adjustable shoe or ground engaging member, such that the shoe may be adjusted with respect to the rim of the tractor wheel to take up wear.

Another object of the invention is to provide a traction device which has an adjustable shoe to take up wear and which shoe is capable of being reversed so that when one side of the shoe is worn, the other side may be employed as the ground engaging portion, thereby prolonging the life of each shoe.

A still further object of the invention is to provide an adjustable shoe of such shape that sticky or damp soil will not have a tendency to collect upon the face or rim of.

the wheel as has been experienced upon prior devices of this character.

Still further objects reside in forming a traction device attachable to a tractor wheel which is made of two pieces, one of which consists of the wearing shoe which is relatively simple and inexpensive, thereby pro viding cheap replacement. Also, it is an ob ject to provide the adj ustable shoe ofthe device with a. line adjustment so that the shoe may be adjusted relatively to the wheel suitable to various soil conditions.

lVith the foregoing and other objects in 'iew which will be pointed out in the following detailed description and defined in the appended claims, reference is had to the accompanying drawing for an illustrative embodiment of the invention in its preferred form, wherein- Fig. 1, is a partial side elevation of a portion of a tractor wheel upon which the improved traction device is mounted.

Fig. 2, is a section taken through Fig. 1, substantially on the line 2-2 thereof.

Fig. 3, is a section also taken through Fi 1, substantially upon the line 33 thereof.

F lg. d, is a vertical section taken through Fig. 2, substantially on theline 4'-f, the

ground engag ng shoe being originally applied.

Fig. '5, is a .I v 1 ground engaging shoe oemg shown as to Fig. 4, the shown as havsimilar View the mounting or supporting member of the,

device.

Fig. 9, is a perspective View of the ground engaging shoe.

Fig. 10, is a section taken substantially on the line 10-- 10 of Figure 9.

Referring to the accompanying drawing where n similar reference characters des1gnate similar parts throughout, the device in its preferred mounting member somewhat L shaped in embodiment consists of a cross section, which consists of a bottom 10, adapted to be secured to the rim 11, of a tractor wheel by means of bolts 12, extending therethru.

The mounting member 10,

is preferably a single casting which may be of cast lron, cast steel, or forged steel and has lntegral with the bottom 10, an ino'lzned face 13, and somewhat triangular shaped sides 14 and 15, joining the inclined face 13,, with the bottom 10. As clearly shown in Fig. 2, the base 10, has a flange or lip 16,

beneath one of the sides which is adapted to extend over the edge of the rim or face of the wheel 11, and snugly bear thereagainst.

The'inolined face 13, has a slot or elongated opening 17, through which is adaptedto pass-the shank of the bolt 18.

series of projecting teeth 19, project from the front face of the inclined face 13.

The head 20, of the bolt 18, is receivedwithin a socket 21, of the ground engaging shoe 22, which shoe has upon its rear face a series of teeth 23, adapted to interlit with the teeth 19. A nut 24:, which bears against a lock washer 25, serves to tighten the bolt 18, and hold the ground engaging shoe 22, with its teeth 23, in interfitting engagement with the teeth 19.

The ground engaging shoe 22, has a pair of side flanges 26,'which are adapted to 15.

bear against the sides 14 and Adjustment for the device is provided by unscrewing the nut 24:, so that the teeth 23, of the ground engaging shoe 22, may slide over the teeth 19, so that as the upper edge of the shoe 22, as shown in Fig. 4, becomes worn, the shoe may be raised one or mor tcethat a time and clamped in such position by means of the bolt 18.

T his adjustment may be made either when the shoe becomes worn or upon usingthe tractor upon very soft ground where a longer or deeper traction device is desired.

he bolt 18, is slid-able within the slot 17, and in Fig. 5, the shoe is shown as having been worn and raised into its uppermost position with the bolt 18, engaging the up per surface of the slot- 17. In Fig. 6, the shoe 22, is shown as having been reversed after one-half of the shoe has been worn I off, so thatthe opposite or unused half may be worn before replacement of the shoe is necessary.

As clearly shown in Fig. 10, the shoe 22, has its exposed face transversely curved which has been found by experiment will provide a surface, because of its curvature will not have the tendency to allow mud orv sticky soil to cake and collect thereon.

From the above, it is seen that I have provided a traction device for tractor wheels, having a mounting member provided with an inclined face, teeth arranged upon the inclined face and a shoe which is adjustable upon the edge of the tractor wheel and an adjustable shoe secured upon said mounting member.

2. A traction device for tractor wheels, comprising a mountingmember adapted. to

be secured upon the rim of a tractor wheel,

said mounting member having an inclined face and a shoe adju'stablysecured against the inclined face of said mounting member.

3. A traction device for tractor wheels, comprisin a mounting member attachable to the rim of a tractor wheel, said mounting member hai' ing a flat face, teeth arranged upon said flat face and an adjustable shoe having teeth'adapted to interfit with the teeth upon the mounting member, said shoe being removably secured to said mounting member.

i. A traction device for tractor wheels, comprising a mounting member adapted to be secured to the rim of a tractor wheel, said mounting member having an inclined face, teeth formed uponsaid face, a shoe having teeth adapted to interfit with the teeth upon said mounting member, said shoe being removably secured to said mounting member.

5. A traction device for tractor wheels, comprising a mounting member adapted to be secured to a tractorwheel, said mounting member having an inclined flatface, teeth arranged upon the flat face of said mounting member, a shoe having teeth adapted to interfit'with the teeth upon said mounting member, said shoe having lateral flanges adapted to bear against the sides of the mounting member, and means for removably andadjustably securing said shoe upon said inclined face.

6. A traction device for tractor wheels, comprising a mounting member attachable to the rim of a tractor wheehsaid mounting member having a lateral flange adapted to engage the edge of said rim, an inclined face formed upon said mounting member andhaving teeth, a reversible shoe having teeth adapted to interfit with the teeth of said inclined face, and means for adjustably and removably' securing said shoe upon said mounting member, said shoe having its exposed face transversely curved.

1 7. In a tract-ion device for tractors, a removable shoe having a'transversely curved exposed face, and a lateral bearing flange at each side thereof.

8. A traction device for tractor wheels comprising a mounting member adapted to be mounted upon the exterior peripheral surface, of a tractor wheel, said mounting member having a plurality of teeth formed thereon, a shoe havingcomplementary teeth formed thereon, and means for securing said shoe to said mounting member.

9. A removable shoe for traction devices for tractor wieels having a plurality of transverse teeth formed upon its under side, and a lateral bearing flange at each side thereof.

,In testimony whereof I have signed my name to this specification.

LEONARD TURNER.

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