US19820A - whiting - Google Patents

Description

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lMAWHI'PHW y Hub.

No.V 19,82@ Patented Mar. 30, 1858.

3 Sheets- Sheen J. M. WRITING.

Patented Mar. 30, H568.

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No. 19,820.vv V' 'l Patented Mar. s0,-.185s.

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UNITED STATES JAMES M. WHITING, OF NEX/V BEDFORD, MASSACHUSETTS, ASSIGNOR TO GEO. F. WILSON', ALFRED ANTHONY, AND JAS. M. WHITING.

HUB 0F CARRIAGE-WHEELS.-

Speccaton of Letters Patent 'No. 19,820, dated March 30, 18158.

To all whom it may concern:

Be it known that I, JAMES MONROE IHIT- iNG, now cf the city of New Bedford, in the county of Bristol, in the State of Massachusetts, have invented a new and useful Improvement in Carriage Hubs; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a plan of the hub. Fig. 2 is a longitudinal (cross) section of the same, showing the axletree inserted. Fig. 3 is a plan of the end of the hub, and Fig. 4 is a transverse (cross) section of the hub through the mortises.

In Fig. l, a, e, e aremortises for the spokes.

In Fig. 2, a a a a represents the body of the hub, b, b, Z), india-rubber, c, c, box, receiving the axletree, e, c, compressing nut f, f,.nut fastening the hub to the axletree, g, the axletree.

In Fig. 3, z', c', z', z', are grooves in the body of the hub.

In Fig. 4, h, 7L, h, 7L, are projections on the outer side of the box.

To enable others skilled in the art to make and use my invention I will proceed to describe its construction and operation.

I construct the body of the hub a (L a a of any suitable material, but prefer wood. I make the hole, passing through the hub, Fig. 2, at right angles to the spokes, for the purpose of receiving the box c, c, of considerably greater diameter than the box itself. This hole at each end of the hub, is enlarged for a suitable depth, to a still greater diameter. Into this larger hole, at each end of the hub, I insert a cylinder of vulcanized india-rubber or gutta-percha, o, I), b, o, having longitudinal holes through them of the proper diameter for the reception of the box. Through these holes I insert the box c, o, upon the smaller end of which is previously cut the screw-thread for the reception of the compression nut e, e. This nut,

when screwed firmly into its place, serves the double purposeof holding the box securely in position, and of compressing and packing the vulcanized elastic india rubber or gutta purcha o Z) o Z9 into its seat or position in the hub. The hub, thus fitted, is put on the axletree g, and secured from v loose in the hub.

coming off by the nut f, f,which is screwed on tothe end of the axletree.

Similar letters of reference indicate corresponding parts in each of the several figures.

In Fig. 3, c', z', z', z', are grooves in the hub intoy whichthe elastic substance may be tted or compressed to prevent it from turning in the body of the hub. s

In Fig. 4, 7L, 7L, 7L, 7L, are grooves in the inside of the box which serve to aid in the lubrication of the axletree by oil. c, c, 7c, 7;, are projections on the outer side of the box, which being litted or forced intovthe elastic substance serve to prevent the box from turning therein.

The space m m Fig. 2 between the box and the body of the hub maybe lilled with the like of the elastic substance o o Z9, but I prefer, for obvious reasons, to have it thus unoccupied. In the first place it is cheaper to construct the several parts as shown. In the next place, if this space was so filled, the benefits to be gained by the greater thickness of the elastic substance b Z2 b b, as shown, would be reduced to a minimum which could be obtained by a piece no thicker than would be required to lill the said space. Again, if the spokes should come in contact with the elastic substance, they would on account of its very elasticity, be more likely to work There is another and important reason, why I prefer to have this so vacant, and ust suliicient to secure all the elasticity in the substance o, o, Z2, o. I am enabled to have the material of the body of the hub so as to secure the projections w, w, fw, w, which serve the triple purpose of preventing the hub from coming off, and of affording sutlicient depth for the mortises e a e e, for the tenons of the spokes, without increasing the diameter of the hub, in an inconvenient and unsightly manner, and of a shoulder, against which the compression nut E, E, may act in forcing the said elastic substance firmly into its seat. This elastic material, b, b, o, l), may be continued through the hub without diminution of its thickness and in one piece, and may be allowed to project slightly beyond the body of the hub at each end; compression may then be had, by means of the screw and nut and the hub may be prevented from coming oft', by extending the shoulder of the box at one end, and the compressing nut at the other end, beyond the rubber, or other elastic material, so as to take hold of the body of the hub; but I prefer,'for the reasons eX- pressed above, as well as others, the plan of construction delineated in the drawings. Another and very important reason still, is, that by this method of construction, I am enabled the better to secure the natural elasticity in the material and leverage of the hub, between the fulcrums, or points of support, Z), b, b, b, at each end. It is obvious,.

The effect and operation of this method of constructing hubs, is, to prevent, in a great degree, the injury to .wheels and carriages caused by the striking of the wheels, when in use against solid bodies.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The making of the hub an elastic compound cylindrico-lever, each end of which .rests for a fulcrum on vulcanized india rubber, or gutta percha, or other elastic substance, in combination with the compressing nut, by which the pressure thereon may be regulated.

2. I also claim the grooves in the body of the hub, or their equivalent, and the projections on the outside oit' the box, or their equivalent, in combination with the said elastic substance.

JAMES M. WHITING. [n s] v Witnesses:

JAMES TUCKER, Jr.,

OLIVER DAvIs.

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