US1218839A

US1218839A - Car-wheel bearing.

Info

Publication number: US1218839A
Application number: US10949916A
Authority: US
Inventors: William F Daniel
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-07-15
Filing date: 1916-07-15
Publication date: 1917-03-13
Anticipated expiration: 1934-03-13

Description

W. F. DANIEL.

CAR .WHEEL BEA RING. APPLICATION man JULY 15, ms.

1,21 8,839. Patented Mar. 13, 1917.

WILLIAM F. DANIEL, OF BRISTOL, TENNESSEE.

GAB-WHEEL BEARING.

Specification of Letters Patent.

' Application filed July 15, 1916. SeriaINo. 109,499.

To all whomitmay concern:

Be it known that I, WILLIAM F. DANIEL, a citizen of the United States, residing at Bristol, in the county of Sullivan and State of Tennessee, have invented certain new and useful Improvements in Car-Wheel Bearings, of which the following is a specification.

This invention relates to car wheel bearings, and more particularly to certain improvements in the construction disclosed in prior U. S. Letters Patent No. 1,108,068, granted to me on the 18th day of August, 1914.

The car wheel bearing disclosed in my prior patent above referred to was of the type employing a hub for the car wheel, having an integral oil or grease chamber surrounding the end of the axle and connecting with the interior of that portion of the hub which contains the usual roller bearings for the axle. The construction as disclosed in my prior patent includes two steel washers which are cast in the chamber surrounding the end of the axle, and a cotter pin, or similar device, whichpasses through a perforation in the axle outside of the washers and retains them in position. The oil chamber surrounding the end of the axle in said prior construction is separated from that portion of the hub containing the roller bearings by I a partition cast integral with the hub of the wheel, .and contains an aperture to receive the cylindrical end portion of the axle. This partition performs, in that construction, the two-fold function of retaining the rollers in position, and acting as a bearing for the two washers. In the practical use of this invention it has been found that when any unusual strain is thrown upon the wheel, as for example, when the wheel splits a switch, the partition which is of cast metal tends to break, thus rendering the wheel worthless. .In order to overcome this tendency it has been necessary to make the partition very heavy, thus adding weight to the parts, and contracting the spaces on either side of said partition in the wheel hub, which is objectionable.

With a view to overcoming the above, and other objections, the present invention contemplates casting a thin steel ring or plate, which has been previously fashioned, in the core in Such manner that the cast metal of the walls of the wheel hub will form around the edge of the plate in a molten state, and

firmly embed the same as a permanent part of the casting. By casting a steel platein the hub of the wheel to form a partition between the oil chamber and the chamber containing the roller bearing as herein explained, the entire length of the wheel'hub can be materially shortened, and the parti- Patented Mar. 13, 1917.

tion, being of steel, is very much stronger,

and breakage, thereof from the ordinary strains to which these wheels are subjected when in use is prevented.

Another feature of the invention consists in forming a shoulder at a point near the end of thewheel axle which bears against the steel plate above described to constitute a thrust bearing. This has been found in practice to present a very much stronger construction than that in which the thrust bearing is between the end of the axle and the inside of the wheel cap. It also permits the hole in the steel plate to be made smaller than would be the case if the axle was not reduced in size to form the shoulder, and thereby adds materially to the strength of the partition, as compared with former constructions.

wheel is composed of the usual tread portion 8, spokes 10, and hub 12, which latter is extended outward beyond the end of the axle to provide a chamber 14 for containing oil or grease. The interior portion of the hub 12 is provided with a spring steel lining 22 within which is contained the circular series of steel rollers 26, surrounding the axle 1. The grease chamber 14 is shown as cast integral with the main portion of thehub 12, and a steel plate 29 provided with a perforation 31 is cast in the hub in position to separate the chamber containing the roll ers 26 from the grease chamber 14, the peripheral edge portion of the plate 29 being surrounded by the cast metal of the hub 12, during the molding process, so as to retain said plate permanently in position, as

shown. The end portion of the axle 1 is reduced where it passes through the perforation 31, and the shoulder 39 thereby formed bears against the inner face of the plate 29, and forms a thrust bearing for the axle. Perforations 18 are so formed, at suitable intervals through the plate 29,.to permit the passage of the lubricant therethrough.

Outside of the plate 29, and surrounding the reduced end portion of the axle, are two

steel washers

30, 32, which are held in place by the cotter pin 3%, and at suitable points in the wall of the chamber 14 holes are tapped to receive the pipe plugs 38 to permit access to the cotter pin, as well as to enable lubricant to be inserted. The

washers

30, 32 are cast loosely in the chamber 13 and have their inner faces dressed off smooth while their outer faces may, if desired, be rough. This arrangement of the cotter pin and washers relative to a partition separating the roller-receiving chamber from the lubricating chamber is fully shown, described, and claimed in my prior U. S. Letters Patent above referredto and forms no part of the present invention. The chamber 14 is designed to contain suitable grease or oil which will flow to the roller bearings of the axle through the openings 18.

Felt packings

40, 42 are preferably inserted in recesses formed between the housing 4: and the hub 12, and between said housing and the axle, as shown, to prevent the escape of the lubricant at these points.

The plate 29, being of steel, offers that amount of resistance to the torsional strains incidental to the use ofcar wheel, and similar bearings,'which is sufficient to effectually resist said strains and to prevent the fractures which are. liable'to occur in the case of a cast metal partition, as in prior constructions. It has been found in practice that a steel plate may be made quite thin,' and yet be able to withstand these strains as well as or better than a cast iron partition of con siderable thickness. I am thus enabled to materially shorten the length of the wheel hub by the use of such cast-in steel plate, as

compared with prior constructions, which is a decided advantage in bearings of this type. By reason of the fact, also, that the thrust of the axle is sustained by the steel plate 29,

instead of by the inside of the end wall of the oil chamber '14, the liability of fracturing such end wall is entirely] obviated, and

' strains due to the trust of the axle are very effectually resisted.

' Changes may be made in the form, construction, or minor details of the several parts herein shown and described without departing from the spirit of the invention.

Having thus described my invention what i I-claim as new and desire to secure by Letters Patent of the United States is:

a lubricating chamber integral 1. In a wheel, the combination with a hub, of a partition formed of a plate of hard metal having its edges cast in the hub and surrounded by the metal of the hub so as to form a lubricating chamber at the outer end of the hub, and an axle having its end portion projecting through a hole in said partition into the lubricating chamber.

2. In a wheel, the combination with a hub, of a lubricating chamber integral with the hub and surrounding the end of the axle, a steel plate having its edges cast in and surrounded by the metal of the hub, said plate forming a partition separating the lubricating chamber from the bearing chamber, and an axle in the hub having its end portion projecting through a hole in said partition and extending into the lubrieating chamber.

8. In a wheel, the combination with a hub having a bore containing roller bearings, of a lubricating chamber integral with the hub and surrounding the end of the axle, a perforated steel partition separating said chamber from the hub and having its edges cast into the metal of the hub during the molding process, and. an axle arranged within the hub and having its end portion projecting ghrough said partition and into said cham- 4:. In a wheel, the combination with a hub, of a lubricating chamber integral with the hub and surrounding the end of the axle, a perforated steel partition cast in the hub and separating said chamber from the main portion of the hub, and an axle within the hub having a reduced end extending through said partition and a shoulder bearing upon the inner face of the partition.

5. In a wheel, the combination with. a hub, of a lubricating chamber integral with the hub and surrounding the end of the axle, a perforated partition separating said chamber from the hub, and an axle having its end portion reduced to extend through said partition and a shoulder engaging the inner face of the partition to form a thrust bearin i i. In a wheel, the combination with a hub, of a lubricating chamber integral with the hub and surrounding the end of the axle, a perforated steel plate cast at its peripheral edge in the metal of the hub during the molding process and provided with a central perforation, said partition separating said chamber from the hub, an axle having a reduced end portion projecting through said partition, a washer castin said chamber and surrounding the axle, and a pin in the axle outside of the washer for retaining said washer in place. I

7. In a wheel, the combination with a hub having a bore containing roller bearings, of

wth the hub andsurrounding the end of the axle, a perder bearing upon the inside face of the par- :Eorated steel partition havin itsperipheral tition, two washers cast in said chamber and edge cast in the hub during t e molding opsurrounding the axle on the opposite side of 1 oration and provided with a central perforathe partition, and retaining means in the axle tion, anaxle having its end portion reduced outside of the washers for retaining said and extending through said perforation into washers in place.

the lubricating chamber and having a sho'ulv WILLIAM F. DANIEL.