US1250229A - Wheel construction. - Google Patents

Description

H. W. SANFORD.

WHEEL CONSTRUCTION.

APPLICATION FILED FEB. 4. 1916.

1,250,229., Patentad Dec. 18,1917.

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j. j I wanna-S ORD. or KNOX ILLE; ITE SEE- WHEEL oons'rnnc'rron.

To all may concern V I r: Be it known that :11, H Gn W'. S FORD,

a citizen ofitheUnited; States, residingat Knoxville, in the county of Knox State of Tennessee, have invented certainnew and useful Improvements in /Vheel Construction, of'which the-following is a spec fication, reference beinghad therein to the accompanying drawing.

. This'inventionrelatesto wheel construction, and-has referencemore particularly to wheels adapted primarily for mining car service, of the general type or character illustrated and described, for example, i the .United States. Letters-Patent- .0 ALB. Day, No. 1,109,905, dated Sept.- 8, 1914, and

the prior patent to myself, Reissue .No. 13,872 dated January 26, 1915. a

.In wheel constructions of the character .under consideration, considerable studyand experimentation haabeen'given tothat feapense, with a less number of parts, and increased wear resisting properties, than is the case with prior constructions, and this may be said to be the main object or purpose of the resent invention.

The invention, briefly, may be said to include a wheel having an integral closed end hub part constituting an abutment or end thrust bearing for the axle, upon which the hub is sleeved, the abutment having a relatively hardened or wear resisting surface, as by chilling, whereby to effectively take care of the end thrust without the usual incldent wear on the hub cap, and thereby doing away with an independent abutment member or wear disk, as largely employed by others at the present time.

In the type of construction embodied herein, it is possible to preserve the advantages of an extended end thrust bearing surface overlying the entire end, or substantially the entire end of the axle, and at the same time to materially reduce the friction and obviate wear, incident to the engagement between the abutment portion Specification of-zpettersrat nt. 'Patented"D'ec. 18, 191*?. V I,ApplicationfiledFebruary4, 1916. SerialNo. 76,145. i I

chilled at the abutment portion .Wlll DQl',

wear when contacted by theend of-the axle in use.

Theinvention will be more readily appreciated fromthe detailed description to fo l-" .lowwhen considered in connection with the accompanying drawings which form a part hereof, and wherein is disclosed, for the purpose of illustration a convenient and satisfactory embodiment of the invention.

In the drawings,- the figure is. a longitudinalsectionof a-wheel constructiomzan emtherein.

bodiment of myinvention beingillustrated With more particular referenceltol the drawings, like reference numerals refer to corresponding parts throughout the 'several views, in which 1--is a pedestal: having ahollowrextended end adapted for the reception ofa hollow hub 2, preferably integral. with the wheel proper 3 having the usual tread sur-facee, 5 is an axleprojecting from, the

p dest l in t e holl w cham er Of t hub2, which .latteris 'ofincreased Clifllneter,

relative to the axle 5 whereby to provide. a

roller c b rfe the r cep ion f s tab roller bearings, 6. Aclosure-wall 7 ,n aybe provided for the inner end of the hub, said wall having a suitable flange, 7 a -forming-a retaining ring for the terminals or pintles 6 of the rollers. A suitable key 8 of any approved type, such for instance, as illustrated in the Day patent above referred to may be provided for retaining the hub in place on the pedestal, and likewise suitable packing of grease or the like 9 may be interposed in the space between the hub and adjacent wall of the pedestal.

It is desirable in the present instance to provide a bearing surface for the end of the axle integral with the hub, and to this end, a suitable hub cap 9 constitutes an integral portion of the hub and a closed end therefor. The hub cap 9" has a depressed portion 10 forming an inwardly projecting end thrust bearing or abutment part 11 surrounded by an annular recessed part 12 adapted for the reception of the terminals or pintles 6 of the rollers 6. The annular wall of the abutment member 11 c0- operates with the annular flange 7 of the inner closure wall? of the hub to provide retaining means for the rollers, and in this connection, it will be observed that the abutment member 11 is so proportioned that the diameter thereof is greater than that of the end of the axle whereby the abutment member overlies the outer end of the rollers thereby constituting an abutment sur face for the outer end of the rollers as well as an abutment surface for the end of the Wear on the hub cap, and in order to obviate-this wear, thereby increasing the life of the wheel construction, Without the necessity of interposing an abutment member or Wear washer, it is proposed herein to provide the abutment member 11 With a relatively hardened portion 13, and in the embodiment of the invention herein, this hardened wear surface is provided by chilling the metal in the formation of the Wheel. In the formation of the wheel with the-relatively hardened wear surface,to receive the direct impact or end thrust of the axle, it is proposed to concentrate the chill to substantially the diameter of the abutment portion of the hub cap and preferably not of sufficient depth to extend entirely through the hub cap, the chilled portion being designated at 13. In this connection, it is obvious that the chill could be made of any desired depth, but it is very desirable to limit the chilled area whereby to strengthen the wheel structure, since assuming that if the whole hub were chilled it would be quite impracticable to bore the same as is the usual practice, and the end of the Wheel hub would become more or less brittle with Copies of this patent may be obtained for a diameter greater than that of the axle to provide an intermediate roller space, roller bearings posltloned 1n sald space and having terminal central projections or pintles,

a closure member for the inner end of the hub having a flange overlying the pintles at this end of the roller bearing, said'hub having an integral closed outer end with an inwardly projecting thickened centrally disposedabutment part for the axle, said abutment forming with the hub portion an annular recess for the reception of the pintles at the outer end of the roller bearings, and said abutment being chilled at its inner surface, which chilled inner surface is of a size to overlie the outer end of the body portion of the roller bearings as Well as the end of the axle.

In testimony whereof I hereunto affix my signature in the presence of two Witnesses. V

HUGH WHEELER SANFORD. c

lVitnesses C. E. GORE,

V. P. /VRIGHT.

Washington, D. C. I

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