Патент USA US2404581код для вставки
July 23, 1946. Q E‘ WQRKMAN ~ I ‘2,404,581 RES ILIENT WHEEL Filed ‘Sept. 25', 1945 #112155 _ b 22b ._52 ‘24b . BMW Patented July 23, 1946 2,404,581 V UNITED ‘ STATES PATENT» OFF/ICE RESILIENT WHEEL ' ~ ' Clarence E.‘ Workman, Akron, Ohio, assignor to‘ The Firestone Tire & Rubber Company, Akron, Ohio, a corporation of Ohio Application September 25, 1943, Serial No.“503,84 8Claims. (sizes-11y, 1 v . l2, and through the other hub ?ange II which may be somewhat thicker at its juncture with the hub, as shown in Fig. 2, to give it greater strength. The cap plate also is secured to ‘the ?ange ll, near the periphery of each, by a series of bolts I5, I57 that extend through said cap plate and This invention relates to‘resilient wheels for vehicles, and more especially it relates to resilient wheels for use on railway and similar vehicles. Car wheels that run upon rails set up de?nite traction noises due to uneven roadbeds and to joints in the track rails. Furthermore the wheels ?ange, and a spacer member I6 is mounted on are subject to objectionable jar and vibration, each bolt l5, between said'capplate and ?ange, which may be transmitted to, thebodyof the to limit the. extent that they can be drawn toward - vehicle with resulting discomfort'to passengers. Accordingly it has been proposed to employ car 10 wheels having inherent resiliency capable of elim mating the transmission of noise therethrough, and which will contribute‘ to riding comfort by suppressing jars and jolts to which it is subjected. eachiother by said bolts. , ' * , At 18. is rshownthe metal tire or rim'of the wheel; which tire is of the conventional con?gura tion of tires adapted to travel on trackways. The tire I8 is formed with a radially inwardly ex It is to the improvement "of this type of car 15 tending circumferential ?ange l9','which ?ange wheel that this invention is directed. is disposed substantially inthe central plane of, the tire; In the assembled wheelzstructurej the tirev l?hisi disposed concentrically. of the axis vof wheel-hub‘l?, ‘and the tire-?ange? is disposed ' ' The chief objects of the invention are-to pro vide'a resilient wheel of the character mentioned wherein the resilient elements ‘thereof may, be , arranged so as to be subject solelyto shearstress 20 when loaded; to provide a wheel of the character mentioned wherein the resilient elements may or may not be normally under compressive stress, parallel to-thecapplate-ltv and hub-‘?ange II; midway between thef‘same, the inner circumfer ence of the tire ?ange l9 being disposed radially outwardly ‘of the. bolts l4. Adjacent the-tire l8 - the ?ange i9 is formed with a circumferential as desired; to provide simplicity and cheapness of construction; to provide facility of assembly; 25 series ofapertures 20 through which extend the boltsgl-5 'with. spacer ,members 15 thereon, the and in general to provide a superior resilient car apertures 20 being substantially of larger diam wheel. Other objects will be manifest as the de eter‘ than said spacers to enable‘ relative move scription proceeds. ‘ , ~ i‘ ' ment between the .tire ?ange l9 andthe cap plate Of the accompanying drawing: / Fig. l is a side elevation of a resilient Wheel 30 embodying the invention; - . I Fig. 2 is a section on the line 2-4 thereof; Fig. 3 is a side elevation of one of the resilient elements of the improved wheel; , ' > . Fig. 4 is ‘a side elevation of a somewhat modi?ed resilient element; and It andhub-?ange II. , - , ,, ~ , ': Positioned on;opposit,e sides of the tire-flange ii), in the spaces between the latter and the cap plate [3 and hubr?ange H, are identical annular resilient disc-like elements 22,, 22 composed of rubber'or rubber-like resilient material. Each of the resilient elements is enclosed at the respec _' ' tive lateral faces vthereof by arcuate metallic plates that arebonded, to the rubber-structure, pref erably by vulcanization. As is best shown in Fig. 40 3, there are three metal plates on each side of‘ the resilient element, the plates on one side thereofv being ‘designated 23 and the plates on the other side being designated 24. jThe, plates 23 and 24 have their arcuate margins disposed ?ushy‘rwith Fig. 5 is a diametric section through another modi?ed resilient element for resilient wheels. ' Referring to the drawing, there is shown in Figs; 1 and 2 a'car wheel comprising a wheel hub l0 that may be of any suitable size, and which is of tubular form to receive the usual car axle or spindle upon which it is mounted duringuse in the usual manner. The hub I0 is formed'near one end thereof with a relatively wide circum-i ferential ?ange l I that extends radially outwardly ‘ therefrom. The hub is formed near its opposite end with a relatively narrowior low circumferen the resilient structure 22, at. the outer and inner circumferential faces, thereof ,land have their end margins" disposed radially of the resilient struc ture. ;The end margins of the series of plates23 are‘spaced apart slightly,"as are theend margins tial ?ange l2v that extends radially outwardly therefrom, and mounted upon the hub in abutting 50 of theseries, of plates 24;»;As is‘clearly shown in Fig. 3,>the plates 23>,v 24 of-a resilient element are relation to the outer lateral. face of ?ange I2 is ' an annular cap plate l3 that is of the same out side diameter as the hub-?ange I l. The cap plate not coincident with eachother axially of the ele ment, ‘but are offset or staggered so that, the . location'of. the confronting endsof the plates 24. that extend throughthe cap plate and hub flange " are offset angularly of the elementv fromthe loca; I3 is secured to the hub by a series of bolts l4, l4 2,404,581 V 1 . 7 5.; .. 4 3 ticn of the confronting ends of the plates 23. The the elements adjacent the inner circumference arrangement obviates any local weakness of the thereof assures a more even distribution of the structure due to the sectional character of the stresses imposedupon'said elements, and also 1 .plates on the lateral faces thereof. enables the attaching bolts 21, that secure the The plates 23, 24 are utilized for attaching the elements to the tire structure, to be concealed resilient elements 22 to the tire-?ange l9, and and protected interiorly of the wheel. The fea to the cap-plate. l3 or hub-flange H as the case ture of making the lateral facing plates 23, 24 of " may be. More speci?cally, the plates 23 are the resilient elements in‘ section form instead of utilized for attaching one of the resilient ele-' integral, asin prior constructions, gives the re ments to the cap-plate I 3 and the other resili-, .10 silient elements a modicum of transverse ?ex ‘ ent element to the hub-?ange II, and the plates ibility and enables slight relative movement be ‘ 24 are utilized for attachingboth resilientrele- ‘ tween the respective plates on either side of the 1 ments to the tire-?ange l9. Thus’in the mount- ‘_ elements so that less tolerence in the forming 1 ing of the resilient elements? 22 in the "wheel, 3 their positions are reversed so" that the plates 1 2d of each are in abutting‘ relation to the tire- ' of the apertur‘esZ?, '29 is required, since the ele ments are ‘capable of slight distortion to bring said apertures into registry with the bolt holes ?ange I9, the elements being’ concentric with,‘ in members H, I3 and [9 during the application the axis of the wheel. Each resilient element is , of the bolts [5 and 21 in the assembling of the 1 formed at its inner circumference with a series ' 1 of recesses or re-entrants 25 that are located in 20 1 the plates 123 'and'resilient- material of the ele = ments, but not in the'plates 24 thereof. The 3 plates 24 are apertured at 26 in the‘regions there- ' ‘ of that are coincident with, said re-entrants, said I apertures receiving respective bolts 21," Fig. 2, wheel. ' 7 . The construction of the improved wheel is rel atively simple and inexpensive, and achieves the ~ other advantages set out in the foregoing state ment of objects. ' r v The modi?ed resilient element 220. of the in- . ‘ that also extend through tire-flange l9 and se vention shown in Fig; ~4»is essentially similar to the resilient elements 22 previously described‘, ‘ cure the resilient elements 22 to the latter. Each ‘ and differs therefrom solely in the form of the resilient element 22 also is formedv at its periph- ' I ery with'a series of recesses or re-entrants 28 recesses or re-entrants in the inner circumfer ence; and periphery thereof. As shown in Fig. 4, > ‘ 1 that are located in the plates?“ and resilient 30 said re'eentrants are designated 25a and 28a. and 1 material of the elements; but notin'theiplates 23 j, are in the shape of scallops that merge. gently : thereof." 'As is'rbest shown in Fig.13, the re-en with the circumferential faces’ of theresilient VI trants 28 are sixin number, as are the re-en element and itsside plates, instead of de?ning §.trants25, the re-entrants 25, 28‘being offset from sharp corners therewith as. in the elements 1 each other radially of the resilient element. The 35 shown in Fig- 3. The arrangement effects a ~ f plates 23are apertured at 29 in the regions'there saving of material without sacri?ce of any» of ; the advantages of the invention. ‘, . l of that are coincident With‘the re-entrants 28; ‘f said‘ apertures receiving respective spaced mem- ‘ The modi?ed resilient. element 221) shownin ‘hers l6‘ that are mounted on bolts l5‘be'tween ‘ the cap-plate]; and hub-‘flange l I, said spacers Fig. dis ‘similar in mostrespects to the resilient ‘ elements previously-described,and differs there- _ ‘ having'shoul'd'ere‘d end portions adapted to bear 1 fromfsolely in the transverse contour of its inner and outer circumferential margins, between'the ‘ against the faces of the plates 23, around the apertures 29, as is clearly shown in Fig. 2. The re-entrants 28 provide clearance about the spac ‘lateral plates 23b, 2% of its structure. As shown in Fig. 5, the material oflthe resilient body 2217, - ers l5 enabling the'plates 724 to‘ move with the 45 when uncompressed, normally overlies the pe 7 s tire-?ange l9 relatively of the plates 23 when the ripheral margins of the plates 23b, 24b and bulges wheelie in use." '" I somewhat beyond said margins, and is circum From the/foregoing it will be apparent that ferentially grooved at 32, 32 between said bulged j thejvertical load carried by’ the wheel will sub portions. .The arrangement is such'that when . ‘ ject ‘the resilient members to shear stress only, 50 the resilient element 22biisrplaced under com and-,th'at the‘ tire'member l8 atall times will'be pressive stress, the radial displacement OfIthe ‘ resiliently supported out'bf metaleto-metal con resilient material, toward both circumferences ,tact‘with the'hub l0 and its‘?ange II and cap thereof, will ?atten said grooves so that they plate [3 so that no transmission of vibration or approach transverse alignment with said bulges.’ noise to‘ a vehicle ‘employing the wheel is pos 55 The advantages of such arrangement are that the ; sible. ‘ Theuse of the spacer members I 6 and the " presence of the’hub-flang'e' l2 limit the extent to which the cap-plate I3'may be drawn toward . the hub-?ange IL. Thus by controlling the ‘ ‘thickness of the resilient elements 22 it is pos placing of the resilient elements under compres-r sivestress does not impose deleterious tension'in the marginal regions thereof suchaswould be caused by pressure-imposed bulging, and said marginal regions are not forced into a position ‘sible to control the extent to which said elements . where they can be cut'by the margins of the ‘are subjected to lateral compressive stress, it also it lateral metal plates. ' ‘ ' ' being possible to make the elements of such Other modi?cations may be resorted to with ‘thickness that they will be subjecttono com out departing‘from the spirit of the-invention, press’rive stress. The'arrangement is such‘ that 65 or the ‘scope thereof as. de?ned by the appended the wearing qualitieslan‘d1 resilient characteris ‘tics of the resilient'elements may be retained for ' k9, longer period than would be‘ ‘the case if the‘ claims; What is'claimed 1S2. 1 . ' . '1 W r . ‘. . i 1.. A resilient wheel comprising a the structure ' compression of said elementswas not controlled. f armed with. a radially inwardly extending ‘?ange; Furthermore, the mounting of’ the resilientele '70 a hub’ structure" concentric 'therewitnhaving vments in the wheel is not dependent upon com radially’ on opposite outwardly. sides of extending the tire‘ flange portions, in’s‘paced disposedv re; pression of the elements. Y ' r ' ' ‘ ' The feature of attaching the resilient elements ' to the hub structure adjacentithe'periphery' of the elements and attachingthiei-tire structure to 75 lation thereto, respective? resilient elements dis-1 ' posed between said flange and'rthe hub portions at each side thereof, each of 'saidfresilient ele- , ‘ 2,404,581 5 ments comprising a ?at annular body of resil ient material having a plurality of thin metallic plates bonded to each of the opposite lateral faces thereof, bolts anchoring the ?ange-contact ing plates to said ?ange at the inner circumfer ential margin of each, and bolts anchoring the hub portions to the plates that contact the'same 6 v 4. Cushioning means for resiliently supporting a tire member on a hub, said means comprising a ?at annular body. of resilient material, and sec tional metallic facings bonded to opposite lateral surfaces thereof, the facing sections on one side of the resilient body being offset with relation to ' the facingsections on the other side thereof. 5. Cushioning means for resiliently supporting a tire member on a hub, said means comprising a 2. A resilient wheel comprising a tire structure. formed with a radially inwardly extending ?ange, 10 ?at annular body of ‘resilient material, and sec tional metallic facings bonded to opposite lateral a hub structure concentric therewith formed at surfaces thereof, the margins of adjacent fac one side of its middle with a relatively wide ing sections on either, side of the body being, ‘radially outwardly extending ?ange disposed at slightly spaced apart from each other to enable, one side of the tire ?ange in spaced relation thereto, and formed at the other side of its mid 15 at least a modicum of relative movement be tween sections. dle with a relatively low radially outwardly ex 6. Cushioning meansrfor resiliently supporting tendingr ?ange, a cap plate disposed on the other a'tire member on a hub, said means comprising side of said tire ?ange in spaced relation there a ?at annular body of resilient material, and to, bolts securing said cap plate to the outer lat teral face of. said relatively low ?ange whereby 20 sectional metallic facings bonded to opposite lat eral surfaces thereof, eachrfacing? section con the cap plate is determinately positioned at its sisting of a ?at arcuate plate with end margins inner circumference, respective resilient elements disposed radially of the cushion, the end mar disposed between the tire ?ange and hub ?ange gins of adjacent sections on either side of the and between the tire ?ange and cap plate, each of said resilient elements comprising a ?at annular 25 structure being in confronting relation to each other. body of resilient material disposed concentrically 7. A combination as de?ned in claim 6 where; of the hub and having a plurality of thin metal in the confronting margins of the plates on one lic plates bonded to each of the opposite lateral side of the cushion are angularly offset from the faces thereof, bolts anchoring the tire-?ange contacting plates to said flange at the inner cir 80 confronting margins of the plates on the other; side thereof. cumferential margin of each, and bolts anchor 8. Cushioning means for resiliently support ing the other plates of the resilient elements to ing a tire member on a hub, said means compris the hub ?ange and to the cap plate adjacent the ing a ?at annular body of resilient material, and peripheral margins thereof, which bolts‘ extend through hub ?ange and cap plate and prevent 85 annular metallic facings bonded to opposite lat: adjacent the peripheral margin of‘ said plates. spreading apart thereof. 3. Cushioning means for resiliently supporting a tire member on a hub, said means comprising a ?at annular body of resilient material, and thin eral surfaces thereof, the peripheral face of the resilient material normally bulging slightly be yond the inner and outer circumferential mar gins of the facings and overlying the same and metallic facings bonded to opposite lateral sur 40 being circumferentially recessed intermediate said bulges. ‘ faces thereof, each of said metallic facings be CLARENCE E. WORKMAN. ' ing sectional.