US331292A

US331292A - Car-wheel

Info

Publication number: US331292A
Authority: US
Publication date: 1885-12-01
Anticipated expiration: 1902-12-01

Description

(No Model.) 2 Sheets-Sheet 1.

J. FERGUSON.

GAR WHEEL 7 No. 331,292. Patented Dec. 1,1885.

(No Model.) 2 SheetsSheet 2. J. FERGUSON.

CAR WHEEL No. 331,292. Patented Dec; 1, 1885.

YM A

Wfmemsaa UNITED STATES PATENT rrrcn.

JAMES FERGUSON, OF BRIDGEWATER, MASSACHUSETTS.

CAR-WHEEL.

SPECIFICATION forming part of Letters Patent No. 331,292, dated December 1, 18:85.

Application filed April 3, 1884. Serial No. 126,482; (No model.)

To all whom it may concern:

Be it known that I, JAMES FERGUSON, of Bridgewater, in the county of Plymouth and State of Massachusetts, have invented a certain new and useful Improvement in Wrought- Metal Oar-Wheels, of which the following is a specification.

My invention relates to car-wheels, and more particularly to the car-wheel shown and described in my application for Letters Patent filed August 8, 1883, Serial No. 103,143; and it consists in the improvements therein hereinafter described and claimed.

In the drawings, Figure 1 is a side view of a wheel-blank for making the wheel. Fig. 2 is a vertical section of the same. Fig. 3 is a vertical section through the completed wheel. Fig. 4 is an enlarged view of a portion of said section, to show the parts more clearly.

A is the car-wheel blank, which is formed by riveting to the plate a a forged wrought iron or steel flange, a and a smaller flange or hoop, a, by rivets b I), to hold them in position, and then placing the whole in a furnace of proper construction, and raising them to a welding-heat and welding them together in a power-press of suitable construction at one operation. To the plate a is also riveted and welded at the same time another flange, a but this is not essential to the form of the blank, and may be omitted, if desired. Each of the blanks A has formed on its periphery a projecting flange, c entirely around it. After the described welding process two of the blanks A are placed together, with the outer faces of the parts formed from flanges a and c abutting against each other, and a rim, B, having a groove, b, in its internal annular surface, to fit the broad flange formed by the flanges a a of the two blanks coming together,and having that internal annular surface of no greater diameter than the periphery of the blanks on each side of the flanges a, is heated to expand it sufficiently, and the two blanks slipped into this rim, and the latter. is then cooled and caused to contract around the blanks, and thus form a hollow wrought-iron car-wheel body joined together without bolts or rivets. In order to accomplish this joining perfectly, care is taken to proportion the depth of the groove b in the internal surface of the rim B with relation to such internal surface on the side where the blanks A are thus introduced, and to proportion the corresponding projection of the annular external flange formed of the parts a which is to fit into it to theknown capacity of expansion of the metal rim (of the diame ter used) when heated. This insures the blanks A A being firmly clamped against each other and to therim B by its contraction.

In order to facilitate the insertion of the blanks A A into the rim B, as described, I make the shoulder I) on one side of the groove b deeper than the one on the side where the blanks A A are to be inserted, and turn off the periphery of the corresponding blank A outside of its flange a to correspond and of smaller diameter than the periphery of the other blank. \Vhen the two blanks are slipped into the rim B, as described, the annular shoulder b arrests theblanks at the proper place to enable the rim to close accurately around the compound flange a, as described. This shoulder b is always placed on the inside of the wheel when in use, and as the heaviest strains against the tire and rim B are always in an outward direction, their tendency to separate the rim and blanks A A is thus resisted to any desired extent by this shoulder, which can be made of any depth required, as is not the case with the corresponding shoulder on the other side of the groove b.

In order to overcome both the tendency of the tire to slip off the rim B sidewise and to fly off in a radial direction if it bursts, I form the annular grooves in the rim B UT) of an annular form, and so as to leave an annular lip of metal all around outside of each groove, the open side of each groove being toward the inner face of the wheel, and it being made sidewise into an enlarged part of the rim B.

Upon corresponding projections inward from the inner face of the tire O, I make annular tongues b 12 of suitable size to fit closely into the grooves bb when the tire is in place on the rim. By heating the tire slightly and pressing it into place the tongues b b will prevent its flying off radially in case it should burst, while the solid metal behind the grooves b b prevents the tire slipping off the wheel outward.

To prevent the tire slipping off inward,

I turn a corner oft from its inner edge, leaving a groove, 0, around next the rim B. I also have formed on the rim B a lip, b", adjacent to this groove, and when the tire is in place on the rim I turn over this lip with a powerful hammer or press into the groove 0 and swage it into the groove solidly, as shown in Fig. 3. This prevents the tire from slipping inwardly off the rim B.

It will be observed that in my processof forming the wrought-iron wheel the solidity of the body of the wheel depends upon the groove 12 being made to close together the faces a of the blanks A A (by its accurately fitting and being shrunk over the outer flange of the blanks formed by their two parts a a) in a transverse direction.

I do not claim in this application the blank A, nor the combination, with the rim B, of two such blanks, as described, the same being the subject of another application filed by me August 8, 1883, No. 103,143; but

What I do claim as my invention is 1. In combination with the rim B, provided with a deeper shoulder, 12 on one side of the groove 12 than the corresponding shoulder on the other side of said groove the blanks A A, provided with projections a a, substantially as described.

2. In combination with the rim B, provided with the annular groove 1), the tire 0, provided with the corresponding annular tongue, I), substantially as described.

3. In combination with the rim B, provided with the annular groove b and flange b the tire 0, provided with the corresponding tongue, b, and the groove or recess a, substantially as described.

JAMES FERGUSON.