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Show . b JHE MODjRyUJOMOBILE By School' 1Pvrtom- Instructor Auto-Mechanics, Ogd.n ffigh Jttenj for The SUn-iard-Examiuer. Nearly all pneumatic tires can be clnlded Into two forms, clinch. , and straight side. Taj. WtUr wa. invent- toTme,,b7h'1, V thls ,t,rc c"n"" floVn io meet the Tim with two 'straight Due:J, ,fV1bl'n 'nKhenfcd by nils u. ?-ft lron wire or a core" of rim This first typP of tire had Lh owr ,h0 slf1 of the rim 0 hoi, onto the rlrri which prevoi I t from blowing off. with tho neW rr-- ?.f r'.ms h0,nK n-1'' With a re- movable circle, man3 of the objeetlma Wre wuh u'1 f,"m ,h' BtrS Sd of 'enr. rcs:"t lhat tht majority of cars manufactured now are equipped Lwtth the rtraight side tires: ,, .RO E CARE NEEDED. ovel , ha'! b"n sa"1 " favor of Of 55? "f! an1 lh" rP Inflation SLi T " ' wcedrt that the over-e over-e hi,rrcnr?' the ,oa,J mch better, flt fV'd mucn niore service for iLPSS m"' ' :m1 r"!'' a Htu more speed to the car. It is not hardlv nCMtry with the cars manufactured at the present to use oversize tires because be-cause nearly all new cars are now Quipped With sufficient sized tires to ,- niii ( and Blv" tho right kind of Inflation Is used and th tires are sepj up to the pressure of L'O pounds to the inch, which is sufficient for all ordinary cars, tirqs will last much longer, have more reslllencv. give better bet-ter service, and cost less ' "f the two k!nd. of pneumatic tlre mentioned In the last article cord ind fabric tires, thc cord is by far thc most popular. Manufacturers claim many advantages for this type of tire, semo mav be mentioned as follows Saving of fuel, greater mllcm?'- P-r gallon of fuel, Increased strength. uter riding and less fatigue in driving, driv-ing, easier steering, greater coasting ability, more power for speed and hill climbing and levs repairs. The cord tire Is constructed from two large layers of diagonally twisted cord, continuous con-tinuous ln length. Impregnated with rubber or rubier covered, on.- la; r running diagonally aCTOSI the tire, the other layer tunning In th'- opposite 'li-reftlon 'li-reftlon Thev aro made either cllnch-ei cllnch-ei or straight -side. Many other types Of cord tires are made of much finer cords and many more layers, probabl five, each layer of cords running In different directions. This type of cord tire is very popillar and can now be purchased from nearly any of thc tire dealers. I U3RIC TIRES The fabric tire Ig much cheaper in construction than the cord tire. The tarcas Is made of several thicknesses of fabric made up of cotton, some pure rubber and some rubber compo-sllon. compo-sllon. A thin shept of pure curn rubber rub-ber la usually put between each layer of fabric of which there are six or seven layers, a breaker strip Is used between the car.-a.-s and the tread, thus holding the two together, and the whole Is 1 aked in a retort or large kettle into a complete unit, generally in thc presence of sulphur which acts as a sort of a flux for the rubber. Much Improvement has been made In the manufacture of Inni r tubes Purer and better rubber, better cured and more carefully handled by expert men. have done much to Insure better bet-ter service- Tubes have been made with thicker sections. Some of these have had a partial re-enforcement of fabric. Some manufacturers have made an oversize tube which acts as a sort Of a tru.-vs and Is stiffened considerably con-siderably under pressure of air. |