US1260153A - Spring-wheel. - Google Patents

Description

w. L. DAVl S.

SPRING WHEEL.

APPLICATION FILED JUNE 12, 1.911.

L%@, 31 53, Patented Mar. 19, 1918.-

WITNESSES To all whomamay concern:

WILLIAM LEROY DAVIS, or iaonn, MissrssIrrI.

sigma-warm.

Specification of Letters Patent.

Patented Mar. 19,1918.

Application filed rune 12, 1917. seriai-n'o. mere.

c it known that-I. Will-LIAM L; Davis, a citizen of the United States; residing at Bond, in the county of Stone and State of Mississippi, have invented new and useful Improvements; in Spring-Wheels, of which the following is a specification.

This invention relates to improvements in vehicle wheels referring more particularly 'to wheels obtaining resiliency by the use ofsprings.

Incarryingout the invention my principal purpose is topr'o'vide a more eliicient disposition of the springs and coeperating parts. Another object is to provide a spring wheel in which dirt ismore effectually excluded from the mechanism.

With these and other Objects in view I have incorporated my invention in the con struction,combination, and arrangement of parts described in the specification below, more particularly set forth in the appended claims,-and delineated in the drawings, in

Figure 1 isa fragmentary section taken on a plane perpendicular to the axis of the wheel, adjacent one-side of the bearing blocks 18 as indicated in Fig. 3 by the line 1 1.

Fig. 2 is a fragmentary side elevation showing the outer parts of the wheel broken away to expose the springs and adjacent portions of the mechanism.

Fig. 3is a fragmentary transverse section view through the outer portions of the wheel on the plane indicated by the line 3-'3 of Fig. 1. a

Fig; 4 shows a detail of the invention.

As shown in the drawings the wheel has an inner rim 1 having spokes 2 attached in any usually employed manner. Attached to the periphery of the rim is an annular channel member 3, for containing the spring elements, having a base at bolted or otherwise properly secured to the rim, and laterally spaced outwardly extending flanges or side walls 25 and 6 preferably parallel to each other and at right angles to the base l. One

' of the side walls 5 may be formed integrally with the base and for convenient access to the springs the other side wall 6 may be bolted or otherwise detachably engaged on the base 4.

Each side wall is formed with spaced rectangular openings 7 disposed in an annular row which is concentric to the base 4,

and-tie openings in the two walls are arranged in coinciding relation. between the walls andtermmatmg 1n the Extending openings are connecting elements constituting s'pringpockets 8, each pocket 8 comprising a tube preferably rectangular in section which may be provided with shoulders 9 abutting against the sidewalls or with any other suitable means for secure retention in position. Radially disposed in each pocket 8 is a compression spring 10 bearing against compression-plates 11 inserted in the pockets 8 for free sliding movement, theplates llhaving the ends protending from the. respective openings for a purpose to be hereinafter mentioned. Bearing against the out side of each radial wall 8 ofthepockets 8 is a spring 12 extending, preferably tangentially, to bear against a shoe 13 mounted for free movement in a direction to compress the spring; such mounting here shown as projections 14 on the sides of the shoe 13 slidably engaged in guide-slots 15 provided in the side walls 5 and 6. To prevent dis placement, the springs 12 may be inserted in sockets 16 attached to the walls 8 of the pockets 8 and shoes 13 or any other suitable means may be employed.

Spaced outwardly from vand normally concentric to the side walls 5 and 6 is an outer rim 16 which may have on the pe riphery a rubber tread 17 for Contact with theroadway and is provided on itsinner periphery between the adjacent ends of each pair of springs'12 with an inwardly tapered or Wedge-shaped bearing block 18 in faceto-face contact with the shoes 13; whereby the majority of'the springs will be compressed'in a relative movement of the rims.

To enable the resiliency of the springs 10 to take effect a disk-shaped annulus 19 is closely fitted into the rim 16 on each side and is arranged in outward overlapping re lation to, the corresponding side wall, and formed for receiving the protruding ends of the plates 11 with openings 20 elongated to'permit relative rotation of the rims 1 and 16 within the effective range of the springs 12. To retain each annulus 19 in position, it is clampingly engaged between a shoulder 21 which may form an integral part of the rim 16 and a circular side-plate 22 which is detachably secured to the rim 16 adjacent of the annulus by suitable means shown as headed studs 23 inserted in openings pro.- vided in each annulus 19 and side plate 22 and having screw threaded engagement in suitable openings in the rim 16. A spacing ring 24 may be inserted between eachsideplate 22 and the adjacent annulus 19 when desired. The side-plates 22 are further utilized for tightly closing the spring-cavity to exclude dirt and retain lubricants, this be ing eflected in the present instance by bolt ing or otherwise securing to the rim 1 flanges 25 extending adjacent to and here shown as underlying the side plates 22. The spring cavity is preferably filled with grease, and I a felt or other suitable washer 26 is prefer ably inserted between the side-plate and g flange to more perfectly seal the joint.

Itis to be understood that the herein described embodiment of my invention is not to be interpreted as in any way limiting the vspirit or scope of the inventlon, such limitation being confined to that indicated by the latitude ofthe claims.

I claim: 7

1. In a resilient wheel, an inner rim, an

outer rim spaced apart from said inner rim,

an annular row of spaced wedge-shaped bearing-blocks on one of said rims, a plurality of spring-supporting elements on the other rim, and a plurality of springs extending between said bearing-blocks and said supporting elements, each spring having one end rigidly engaged with a respective supporting'element and the other end slidably engaged against a respective bearing-block.

2. In a resllient wheel, an inner rim, an

- outer'rim spaced apart from said inner rim,

an annular row of spaced wedge-shaped bearing-blocks on one of said rims, a plurality of spring-supporting elements on the other rim, a plurality of springs extending between said bearing-blocks and said supporting elements, each spring having one end rigidly engaged with a respective supporting element and the other end slidably engaged against a respective bearing-block, and guide means on the last-mentioned rim whereby said springs are restricted to movement tangentially to the last-mentioned rim.

3. In aresilient wheel, an inner rim, an outer rim spacedapart from said inner rim,

1 spaced outwardly extending flanges on said inner rim, each of said flanges formed with a alurality of openings, a plurality of pairs of compression plates extending between said flanges and havin their ends projecting outwardly through said openings, spring means between the compression plates of each pair, flanges on said outer'rim overlap- Copies of this patentmay be obtained for ping said flanges on the inner rim and formed with openings coinciding with the openings in said flanges on the inner rim, said compression plates havin their outer ends extending through the last mentioned openlngs. V

at. In a resilient wheel, an inner rim, an outer rim spaced apart from said inner rim, spaced outwardly extending flanges on said inner rim, each of said flangesiformed with a plurality of openings, a plurality of pairs of compression plates-extending between said flanges and having their ends projecting outwardly through said openings, spring means between the compression platesof each pair, flanges on said outerrim overlapping said flanges on the inner rim and formed with openings coinciding with the openings in said flanges on the inner rim,

said compression plates having their outer ends extending through the last mentioned openings, connectmg means extending between said flanges on the lnner run, an annular row of bearing blocks on theouter rim, and springs extending between said connecting means and said bearing blocks,

,each spring having an outer end slidably engaged against a respective bearing block. 7

openings in said flanges on the inner'rim,

said compression plates having their outer ends extending through the last mentioned openings, connecting means extending between said flanges on the inner rim, an annular row of bearing blocks on the outer rim, springsextending between said connecting means and said bearing blocks, each spring having an outer end slidably engaged against a respective bearing block, guide means on said flanges on the inner rim, and means on the outer ends of the last mentioned springs having engagement with said guidemeans whereby the last mentioned springs are restricted to movement in one direction relatively to said inner rim. 7

In testimony whereof I affix my signature, 7

WILLIAM LEROY DAVIS.

five cents each, by addressing the Commissioner vo1 Eatents,

Washington, D. 0."

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