Патент USA US2409410код для вставки
Ott. 15,4 1946. ` C, ZARTH - 2,409,410 BEAD-LOCK RING ANDv ASSEMBLY 'Filed July s, 1942 3 Sheets-Sheet l od. 15, 1946. C. E. ¿Ama > - .. 2,409,410 'BEAD Loox RING mmA ASSEMBLY ’ Filed July s, 19424 5 sheets-sheet 2- Oct. l5, 1946. ` c.;-:.zAR1-H ` 2,409,410 BEAD Locx RINGZAND ASSEMBLY Fi_led Julylä, 1942 - 3 Sheets-Sheet 3 ym 2,409,410 Patented Oct. 15, 1946 UNITED STATES PMENT _ OFFICE z Charles E. Zal-th, Akron, Ohio, assigner `to Wing foot Corporation, Akron, Ohio, a corporation of Delaware Application July 3, 1942, Serial No. 449,601 5 Claims. (Cl. 152-400) l tion are achieved bythe provision of a bead lock »ring for use with open beaded, straight sided pneumatic tires and including a plurality of ar cuate segments and means for connecting the segments end to end so as to permit expansion tire, such as a combat tire, to a rim. and contraction of the ring. The ring is posi When a conventional open beaded, straight tioned between 'the beads of the tire mounted on sided pneumatic tire is mounted on the usual rim a rim having radially outwardly directed side and operated in conjunction with the standard iiangies and the pneumatic pressure inside of the inner tube, any blowout occurring in the tire of ten results in the tire separating from the rim or 10 tire"`^serves to move the ring down in wedged re This invention relates to pneumatic tires and to bead locking means therefor, and, more partic ularly, is concerned with bead locking rings for positively securing an open beaded, straight sided becoming so loose on the rim as to render fur» ther driving of'` the rim and tire impossible. Therefore, it has been proposed heretofore to pro vide-means for locking the beads of the tire in association with the rim, but such proposed means have been relatively expensive, difficult lation between the beads of the tire and to en gage the beads against the side flanges of the rim. For a betterv understanding of my invention reference should be had to the accompanying drawings wherein Fig. `1 is a side elevation, partly Ain section, of a bead locking ring constructed in to apply and remove, and have not met with ac accordance with the principles of my invention; ceptance commercially. Further, it has been proposed to provide bead portion of the locking ring including the valve locking means in the’form of ribs'or buttons lformed integral with the rim and over which the beads of the tire must move before being posi tioned upon the bead seats with the ribs or pro jections thereafter tending to hold the beads of the tire on the bead seats of the rim. However, bead lockingmeans of this type,` while possess ing some merit for light tires, have been found Fig. 2 is a fragmentary radial elevation of that 20 stem hole and driving lug; Fig. 3 is a cross-sec tional view taken on line III-III of Fig. 2; Fig. 4 is a fragmentary radial elevation of a portion of the locking ring illustrating the manner of con necting together the arcuate segments thereof; Fig. 5 is a cross-sectional view taken on line V-V of Fig. 4; Fig. 6 is a perspective View illustrating the manner in which the locking ring can be fold ed together to form a compact unit for shipment, to be unsatisfactory for heavy pneumatic tires, handling, and the like; Fig. 7 is a cross-sectional for example, combat tires, and do not adequate ly secure the beads ofthe tireto the rim, to say 30 view through a rim, tire and tube illustrating the positioning of the locking ring just prior to being nothing of the difficulty of getting the beads of the tire over the ribs or projections and on to the bead seat. ` ` It is the general object of my invention to avoid and overcome the foregoing and other diiiiculties of and objections to known forms of bead locking means by theprovision of an improved, relative moved into wedging relation with the beads of the tire; and Fig. 8 is a view similar to Fig. 7 but illustrating the position of the locking ring after it has been moved to the wedged locking position. Referring to the drawings, the numeral I0 in dicates generally one typical embodiment of a bead locking ring constructed in accordance with the principles of my invention. The bead locking locking means to be employed in conjunction with 40 ring includes a plurality of arcuate segments I2 pneumatic tires and standard base rims. each having substantially a channel shape in Another object of my invention is the provi cross section and adapted to be joined end to end sion of a pneumatic tire and rim combination by lost motion pivotal means. Such means ordi including a new `and improved and readily oper narily comprise short arcuate plates I4 having ated bead locking ring adapted to be heldl wedged beveled end portions I6. Each plate I4 has a between the beads of the tire at a point radially countersunk opening in each end which receives within the inextensible bead portions of the tire. the beveled head of a rivet I8 extending through Another object of my invention is to provide ly inexpensive, easily operated and applied bead bead locking means which are moved tobead locking relation by the pneumatic pressure inside of the tire. Another object of my invention is the provision of an improved bead locking ring including a plu_ rality of arcuate segments connected end to end in ring form by pivotal lost motion means. The foregoing and other objects of my inven a suitable slot 20 formed in the end of the arcu ate segment I2, with each rivet I8 being provided `with a hat head 22 which permits sliding and rotary movement of the arcuate segment I2 with respect to the plate I4 without separation of the parts. , I I provide a valve hole 26 in one of the arcuate 55 segments I2, as best seen in Fig. 2, and the valve 3 2,409,410 hole 26 is formed by punching out and bending down a lug 28 in the arcuate segment which lug serves, if this be desired, as a driving lug between the ring IU and any rim upon which the ring is mounted. Fig. 6 of the drawings illustrates the manner in which the entire ring I U can be'folded into a ¿i cuate segments I2, as will be understood from the foregoing description. When it is desired to remove the tire 30 from the rim 34 the side flange 36 of the rim which is received in the gutter 38 is removed from the gutter so that the entire tire 30, inner tube 40, flap 42, and bead locking ring I0 can be slid lat erally off .the rim 34. relatively small .compact assembly vto facilitate the packing, shipping, or handling thereof. It From the foregoing it will be recognized that will be noted from this ligure of the drawings that l0 the various objects of my invention have been the heads 22 of the rivets are received between achieved by the provision of an improved bead the sides of the channels of the arcuate'segments locking ring and assembly particularly adapted and that the plates I4 join the arcuate segments for Securing combat tires and the like to a base together for pivotal and lost-motion »movement rim, ,.and, generally providing improved, rela so that the ring I û is free to expand and'eontract 15 tively-inexpensive, easily-operated positive means to an amount limited by the movement of the riv for securing an open beaded, straight sided tire to ets I 8 in the slots 2U. a rim. Although my invention is primarily In the use of the bead ring I0 of my invention, adapted to operations in conjunction with stand as particularly illustrated in Figs. 7 and8 ?of the ard rims-0f the type particularly illustrated and drawings, the numeral .36 indicates generally an 20 described above, it should be recognized that I .open beaded, straight sided pneumatic tire of a ‘may .employ a .bead locking ring of my invention combat type having >a relatively heavy side Wall >and .carcass vportion „including `a considerably .in conjunction with 4other types lol? rims. `While in accordance with the patentstatutes .greaternumber vof plies oirubberized fabric than I have speciiically illustrated yand described >one fthe -.standard-pneumatic tire. However, it will be 25 embodiment vof my invention, it should-beparticu «understood that the bead locking ring of my in lla'rly Aunderstood that I am _not to be limited ventionmaybe employed in `conjunction with the thereto or thereby, but that the scope _of „my standard, 'conventional Vpneumatic tire, invention is deñned in the appended claims. ‘iI‘he ;tire':30 includes inextensible wire beadre What Iclaim is: -i‘nforcements 32,'whicl'11 inthe combat type of tire 1.'In combination, a substantially filat based -illustrated are generally spaced laterally of each rim having radially-outwardly ldirected lside .other andare two in Ynumberfor each bead of flanges, an open-beaded, straight-sided pneu çthe tire. The pneumatic tire 3U is mounted -upon matic'tinemounted thereon, an'inner tube mount ¿afsubstantially,standardmetal rim 34 having ra ed within the tire,.a bead lockingming positioned dially ,outwardly ydir_ectedside lianges 36, at least between the beads of the tire, agflap between the ¿one Yof ‘which‘may' be removablyçreceived in a gut ring and vthe inner tube, said tube being inflated .terportionïëß formed-at one edge of the rim. Re tofwedge the ring down between the vbeads of .the .ceived~ within _the »pneumatic tire Y3l) is lan `inner tire and radially within theginexgtensible wire re :tube ¿ligand .affiap .d2 'is vpositioned between the inforcements of the beads and to engage the beads irmerztubeillû¿andtherim 34. 40 against the .side flanges of the rim, said ring in ¿Also ~.positioned;between the inner‘tube MI and cludiïlg -a plurality of. arcuate segments of chan .the rim :311 is the .bead locking range -I-d of my nelshaped cross section, arcuate plates bridging `present'inventioman‘d Fig. 7 of the drawings il „between theends .of the segments, and rivets se 'lustrates '.thelposition lof :the bead locking ring cured `to the ,arcuate plates and extending priolttoinflation ofthe inner tube Ml. Irl-other through-slotted openings in the ends of the seg words,îFig. 7 illustrates the position that thejbead _ments -to provide »pivotal lost motion connections »locking ring III `takescduring the assembly of the vbetween segments, and heads on the rivets re tire, tube, 'ñap andlock Iring on therim `34. >Once ceived within _thechannel of the segments. .theçtire-öll and the various‘parts thereof, -as il r2. In combination, a substantially flat based lustrated `4inIFig. .7, _are 4completely mounted in 50 Irim having `radially-outwardly directed side ¿position .under-¿pressure issupplied to the in 'ilanges'anopen-beaded, straight-sided pneumat .tericnoi -the »inner tube t0 and this air under ic :tire-mounted thereon, lan inner tube mounted .pressure forces fthe _inner tube .40 and the ilap within the tire, a bead locking ring positioned .42 ¿down against the upperrsurface of the bead between the beads vof the tire, said tube being in lockingV ring `III to V‘wedge the bead locking ring 55 flated ytowedge the ring down between the beads down between the beads of the Atire and ,into en ofthe tire >and radially within the vinextensible gagement with the rimiâß, `as particularly illus _wire reinforcements of the beads and to engage 'ftrated in Fig-8. Itwill'be seen from Fig. 8 that the _beads ¿against the `side ñanges of the-rim, said >ring including a plurality of arcuate segments of the beadlocking ring Iii is positioned radially in wardly ofthe wire reinforcements 32 in the beads 60 channel-,shaped Icross section, arcuate plates .bridging ¿between the ends of the segments, and A,of the ¿tire ‘323, and that the rubber of the beads ¿rivets lsecured-to the arcuate _plates and extend has `been deflected and-wedged under consider Ving .threugh-sldtted openings inthe ends of the ablehpressure by the bead locking ring I9 to vhold segments »to .provide pivotal lost motion connec Ithe beads of .the tire outwardly against the side tions between segments. ,flanges 36 .of „the >rim Yin suche. ,positive fashion 23. :A bead 4lock'ring for use with open-beaded, .thateven though _the pneumatic .tire shouldsuffer straight-sided .pneumatic tires including ya plu ablow-out or-severe puncture the tire .is sosecure -rality .of karcuate segments of channel-shaped »lyheld on the -ri-m .34 as to permit continued oper .cross section, arcuate plates bridging between the ‘ation of the .rim and .tire as an 'integral-unit. 'The radially inward movement of Athe bead locking ring «Ill from theposition shown -in Fig. 7 to that shown in Fig. 8 is possible due to the lost 70 ends of the segments, rivets secured to thearcu ate .plates .and extending ,through slotted open -ings fin .the:.ends .ofzthesegments to provide piv otallost motion Yconnections between segments, motion connections between the rivets ¿I8 of _the and heads on :the lrivets received within :the .chan :plates :I4 andthe Aslots 20 :in the ends of the ar 75 nel shapeof the segments, 2,409,410 5 6 4. A bead-locking device adapted when in stalled to retain the beads of a pneumatic tire therein mounted on the rim, an inner tube in said tire, and a bead-locking device for retaining the upon its rim seat, comprising a plurality of arcu ate segments united one to another by substan beads against the rim flanges, said bead-locking deviceV embodying a plurality of rigid arcuate segments interconnected by rigid connectors to . tially rigid connectors, said connectors and seg ments having coacting means adapted to provide pivotal movement of one segment with respect to an adjacent segment, and relative circumfer ential movement between adjacent segments. form an annulus and means coacting With said segments and connectors for providing pivotal movement between adjacent segments as well as relative circumferential movement between said 5. In combination, a iianged rim, a pneumatic i0 segments. tire having inextensible bead reinforcements CHARLES E. ZARTH.