US1109905A - Wheel structure. - Google Patents

Description

A.' B. DAY.

WHEEL STRUCTURE. APPLICATION FILED AUG. 14, 1913.

Patented Sept. 8, 191.4.

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WHEEL STRUCTURE. v, APPLICATION FILED wem; 1913.

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lo'Th ALFRED BRYANT jY, 0F. KNQXVILLE, TENNESSEE WHEEL STRUCTURE.

Specication of Letters Patent.

Patented Sept. 8, 1914.' serial No. 784,805.

Application tiled August le, 1918.

To all whom it may concern:

Be it. known that I, citizen of the United States, residin at Knoxville, in the county of Knox and tate of Tennessee, and useful Improvements in Wheel Structures, of which Athe' following is a specica tion, reference b eing had therein to thea@ companying drawing.

is invention relatesto an improvement in wheel l'structures adapted for use .in con cars wherein the axles ection'with A .are 'usually fixed .to the car body and the wheel members rotate onl the ends ofthe axles.

They invention .may be. stated to be moref .speciicallyan improvement on the 'class of wheels illustrated and described in the patentto A. BL lDay'hlo. 907750 of December 29, 1908,. and patent .issued to Hugh W Sanford on JulyQ, 1912, No. 1031590.

p .Thenbjcct of the present invention'is te simplify 'the structures described in these above mentioned patents to produce a wheel which will have' a minimum number of' parts; one wherein the use of fbrous paching or end washers .are avoided `between thehub and pedestal or body portion; one wherein'a relatively thin vlubricant may be employed without escapingfrom the bear' ing; one which eliminates wearA on the inner wheel hub and pedestal box, and one wherein the roller members may be readily .assembled in the hub part of the wheel and there retained after the wheel has been removed from the axle.

' the line 2-2 of Fig. l; Fig.

A convenient embodiment of the invention is shown in the accompanying drawings, as well as a modified form thereof, but itis to be understood that various changes canvbe made and employed in lieuof features shown without departing from the nature and principle of the invention.

In the drawing: Figure l is a longitudinal vertical section taken through the wheel box or' hub and showing the wheel in elevation; Fig. 2 is a cross section on 3 is a modified form; Fig. 4 is an end view of a spacing ring for the rollers,l and Fig. 5 is a slightly modified form of spacing ring.

A designates the axle, conveniently cylindrical of preferably ALFRED B. DAY,

have invented 'certain new A more particularly body of the car, 'B theA Orming av shoulder as at b against which a collar b is placed on the axle.

fC.. designates the pedestal box `having a .shank portion C' through which the axle greater diameterfthan the end portion,

passes, the .end thereof abutting the collar The louter end of the pedestal on lthe axle. box is 'ormed enlarged and though not necessary, the same conveniently has two diameters, the smaller or innermost diameterlbe'ing designated C2, and the outer C3 forming a shoulder c therebetween. This said portion of the pedestal box is conveniently symmetrical onV its inner face, the verticaly wall c extending to the bore thereof, while the outer flanged portion of thebox extends sufficiently forward or outward to constitute a housing for the inner end of the hub, presently tobe described.

D l designates the wheel hub, conveniently' cast 1n 'a single piece having its forward, end closed by, the integral end partD formed with a central abutting part for the end of theaxle, and an annular recess d. The diameter of the central abutting part of the `endor cap portion D is slightly greater than the end of the diameter of the axle, as Shownin Fig.l 1. The bore of the hub i's conveniently uniform throu houtand it .has on its inner face a lining 2 of the usual construction. Adjacent the inner end of the hub on the periphery thereof, is anenlargement .or shoulder part DE. while inwardly of the shoulder and spaced therefrom is a shoulder part D4, a channel d4 between the two shoulders. The'diameter of the shoulders D, D* is greater than the smaller diameter of .the interior of the pedestal` box and slightly less than the diameter of the outer portion Cs of the pedestal box thereby forming a somewhat restricted passageway -between the inner walls of the edestal box and the outer surface of the yinner end of the hub part. The hub is conf. the vertical wall 0',

`veniently spaced from and the shoulder part C of the pedestal box byv extending the axle portion until its end engages the endwall D preventing the hub from moving'back on the axle to a point where the end of thel hub will be inengagement with the pedestal box. The collars b (there being one on each'end of the axle) serve to maintainthe axle against movement and thereby the space.

being formed of the hub, thus vlo between the hub and maintained substantiallyA nnrisrin during service. .lt may be stated that an advantage of this construction is that oi avoiding wearing contact between the larger areas oi the box and hub at the inner end of the latter.

lvlounted within the inner end of the bore of the hub is a metallic ring E, the same being riveted conveniently and closely fitted to the inner end of the hub. rl`his ring projects inwardlyto a point in close or substanti ally contact relation with the axle. Projecting inwardly 'from the inside edge of the ring E is a lip e 'forming in substance an annular recess e between the wall of the hub and the said lip, corresponding in that particular somewhat to the annular recess d at the outer end oi the hub,

l? designates a series of rollers arranged around the end of the axle, each being provided with central studs The length of the rollers is less than the'distance between the projecting part ci' the barrier and the inwardly extending portion of the end cap, while the studs f extend outwardly from the ends or" the rollers toa distance suliicient to carry the same below or beyond the lprojecting part e of the bar-- rier and beyond the inwardly extending part or wall of the end cap. The studs on the rollers being located within the annular channels or spaces e and al, serve to retain the rollers in the hubwhen the axle is removed.

.Endwise movement of thel rollers F in one direction is provided by the end thereof 'engaging the inner surface of the enlarged portion ot the cap and movement in an opposite direction may be limited bythe stud f engaging the member E or by the end of the roller engaging the part e as desired.

ln some instances it may be found desirablefto' interpose between the thrust bearing part atthe center of the end disk D a wear plate G, the same being maintained in its position by having its edge portions dished outwardly at g in a manner to permit the studs on the ends of the rollers to occupy their proper position in the recess d. This wearing washer however may be omitted `in some cases.

To retain the hub in its position against outward movement relative to the pedestal box, keys l-l are employed, the same passing through suitable seats or apertures in the walls oi the pedestal box and' through the spaces Z4 of the hub These keys are of a thickness less than the space d4, but are designed to rt against the vertical part oi the flange Dt.

have 'found it convenient to :torni these keys substan Alily rectangular in cross section, prefera'n square so that a large wearing surface iguished from the l in 'aie aforementioned pa at their ends.

the p= lestal box is f l l l lgrease on the y rioaeor;

lil designates a threaded plug fitted into an oil opening leading through the wall ot the hub into the roller recess al.

l represents the wheel spokes and 2 the rim.

By maintaining substantially the relative position ot the hub and pedestal box as shown, whereby a tortuous space is formed between the same, it has been ascertained that the usc of felt suoli as shown in my above mentioned patent can be avoided and in lieu thereoi a heavy non-fluid grease emplayed. This grease can be packed into the space and will maintain its position largely by virtue of the character oil the passageway or space, thus excluding all sand, grit or dust7 while at the same time 'forming a lubricant betweenuthe parts. The grease thus indicated or referred to is shown in the drawing and it has been ascertained to be successful as a packing as well as a lubricant for this point, thus avoiding the large area contacting and wearing surface as suggestcdV in vmy Jormerpatent. By forming the barrier at the inner end of the hub a thin lubricant can be employed in connection with the bearing proper and will be maintained in the wheel and in a proper position with reference to the rollers.` However, in practice it is preferred to use a thick bearing as well as for the pack` ing. This thick vgrease is forced into the hearing with a screw pressure grease gun. The old -dirtyfgrease is thus forced out of the wheel into the pedestal as a packing and fresh grease is put on the bearing thus automatically repacking thev pedestal 'at each greasingfof the wheel.

By this construction it will bel seen that cage rings or spacing rings are avoided' and that when the hub is removed.r the rollers will still maintain their position in the hub. lt will be understood, however, in connection with the construction just described, that spacing rings without longitudinal ribs (as in ordinary roller cages) may be employed as shown in Figs. 3 and 4 of the' drawing.

ln the. modilication of the construction shownv in Figs. 3 and ll, the rollers L have their ends positioned in spacing rings L', the pintles or lstuds at the ends of the rollers entering circular openings in the rings in a well known manner. The rollers are maintained in position' in this particular 'form oi structure bya cup shaped member M riveted to the inner end of the hub having its innermost portion bent into a point adjacent the surface of the axle. rlfhis member lil takes the place of the barrier E hcretoiore described when referring to the other structure. ln this construction the spacing rings will maintain the rollers in their proper position against `falling out from the hub when the axle is remored while the rollers, as shown 1n Fig.

barrier prevents the removal of the rollers l in "an endwise direction. v i' n lieu of the circular perforations or bearings for the studs at the ends of the 4, an oblong open ended slot Z may be employed in the spacing rings, :1s shown in Fig. 5. 1

One of the 'material advantages and bene-A fits derived from thejconstruction and arrangement of the bearings is that when in use, the ends ofthe rollers or inner .spacing rings are held against' moving into contact with the stationary part or pedestal, differing in this particular from the construction shown 'in thev aforementioned Patent N o. 907,750. Inasmuch as lthe pedestal box is stationary and the rollers are prevented' from 4coming into Contact therein, all wearing tendency between the rollers and the pedestal is avoided.

An additional advantage may be stated to be that of preventing the rollers or. theirv spacing rings from coming into contact with the fixed part which would tend to cause improper rotation of the rollers. The con` rollers to operate at substantially the same rate of speed, and all tendency to move the'rollers out of improper parallelism is largelyr` avoided.

From the above it will be ascertained readily that the wheel is one embodying Ya mini-. mum number of parts, can be readily assem- .bled and one which maintains its lubricant without objectionable waste.

Having thus described the invention, what is elaimed'is:-

l. Ina wheel structure and in combination, a cylindrical axle part, a' pedestal having a recessed outer 'end portion, a hub sleeved on the axle, .a barrler member xedly secured within the inner end of the hub, rollers within the hub, and means for retaining the rollers within the hub when the axle is removed.-

'2. In a car and body, a cylindrical axle member, a pedestal the axle is secured and tween the portions, a hub loosely mounted nn the end of the axle with its inner ends separated from the pedestal member by an unobstructed space, and having a projecting rib part at said inner end spaced from said shouldered portion and from the pedestal i hub, and

described.

3. In a wheel structure and in combination a pedestal member having a recessedouter portion of different diameters formed with a shouldered portion therebetween, a hub part having a shoulder on its periphery said . anti-friction in combination with a yhub being separated from v.with a pedestal box,

adjacent its inner end and litted in said pedesta-l portion, means -on the pedestal portion for maintaining' the hub against outward movement, and an axle member having a cylindrical end entering the hub andvsecured to said pedestal portion, substantially as described.

4. In a wheel structureand in combinav tion a pedestal having a'recessed outer end portion an axle, a hub sleeved on 'the axle and having an end positioned within a ter` minal recess of 'the pedestal, said hub also having an integral end cap portion constituting an end thrust bearing for the axle and formed with an annular recess adjacent cap, a barrier removably secured at the opposite end of the hub and having an inwardly projecting part, and a series of roll` ershaving end studs located respectively within said recess and spaced between the inwardly projecting part of the barrier and the hub.

5. In a wheel structure, the combination with a pedestal member having a recessed outer portion a cylindrical axle projecting from the pedestal, of a hub member sleeved upon the axle Jand positioned within the recess of the pedestal, said hub member having a closed outer end formed with an annularl recess on its inner wall, of 'a barrierfmember having a longitudinally projecting inner portion secured to the inner end of the-hub, and

rollers in the hub having projectlng portions entering-.between the Iongitudinal portion of the barrier and the hub and in the said annular recesses respec- 100 tively.

6. In a wheel structure and in combination a pedestal box and 'axle secured therein,

a liub member having its ends projecting into the pedestal box and formed of a single 105 casting, the end wall of which constitutes an end thrust4 bearing for the axle, a series of anti-friction rollers in the hub, a barrier riveted to the inner end of the hub and enh` bracing the axle, and means for r etaininv the anti-friction rollers in the hub, the said Y the pedestal by an unobstructed space. v

In a wheel structure, the combination and a hub membenof an axle, an end thrust bearing at the endv ofv the hub, spaced annular flanges projecting outwardly beyond the periphery of the hub, one of said lianges substantially closing the space between the open end of the pedestal 1'20 boxand the hub, the side walls of the other of said flanges providing an elongated vertical engaging surface, and a pin of rectanguar cross lsection secured to the pedestal box and having a flat side arranged toengage the vertical surface of said flange, and the said pin lying within the plane of said ianges. 8. In'a wheel structure and in combinae tion an axle having a cylindrical part, a

pedestal member having a portion to receive the .end of a hub, a hub member hav ing .a closed outer end, means ior maintaining the inner end of theA hub in' the pedestal box but out of contact therewith at all points whereby the space therebetween is unobstructed, and a lubricating packing subn stantially filling the space between the pedestal box and the end o'l the hub.

9. ln a Wheel construction, the combination of a pedestalmember having a recess the Wall of the recess being conform intermediate its ends an an axle proiecting at its side, structed to annular shoulder, through the pedestal, sleeved positioned Within the recess of the pedestal., and an annular rib positioned in the space formed by said shoulder of the recess, the said hub and rib being separated from the adjacent Wall of the pedestal by an unob lstructed' space, a lubricant packing substantially' filling said space, the hub having an inward proiection at its inner end separated from the vertical Wall of the receiving recess of the pedestal, and a lubricant packing entirely filling the space between said inward projection of the` hub and the vertical wall o the pedestal recess, said lubricant being indirect contact with the hub and said pedestal..

Gopes of this patent may be .obtained for five cents each,

a hub for the axleK `upon the axle and haring an end i,ice,ecs

10. ln a Wheel construction, the combination ci a pedestal member having d.recess at its side, the Wall of the recess being constructed to form intermediate its ends an shoulder, an axle pro1ecting the pedestal, a hub member for the axle sleeved upon the aXle and having an end positioned With-in the recess oi the pedestal, and an annular rib positioned in the space formed by said shoulder of the recess, the said hub and rib being separated from the adjacent W all of the pedestal by an unobstructed space, a lubricant packing substantially'lling said space, the hub having an inward projection at its end forming' an abutment for Athe end of the axle, la barrier member arranged Within the hub and positioned on the axleior 'closing the opposite end of the hub member, roller bearings nterposed between the axle and the hub member, and bearings on the end projection oY the hub member' and said loarriermember for retaining the rollers in place when' the axle is removed. l

ln testimony whereof l affix my -signature in presence of two Witnesses.

ALFRED BRYANT DAY.

Vitnesses E. R. Tarma, J. FRANK Dinner.

annular 4tlirou gh by addressing the Commissioner of Patents,

Washington, l). C.

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