cr i v. "- ' r, v -( ))' f Motorists are begin ning to demand something more than an adjustment guarantee to pro tect them against frequent tire trouble arid Bhort tire mile- , i raiMffliin 1 onninffiniiHtiiitiiiBiifBiipniinniBitnniiiniiinniiiiMHPP """nnniiiini! ssrr Speedway Tires arc cured by an internal expansion process of curing. Hidden flaws have been banished entirely by this new process. imiimimi iim iiraMBiraiuiMiu imnimira sSKSSSjVf , . . B 81 f X' Curing by internal pressure insures a structurally perfect tire, m ulHllillillM S J' Flaws 1 ! They were formerly the cause of much tire trouble, but they have been banished entirely by this new process rHE public is ready for such a tire as the National Speedway. Motorists have grown weary of adjustment wrangles and they are looking for, a tire that will perform as perfectly on the car as , it does in the advertising. . .. And this could only come from the dis- . covery of a process that involved none of 'N the risks of mold-pressure curing. .', ."' t "We build National Speedway Tires on a col-;: . ,''" lapsible core and take the core out before '- ,' the casing goes into the mold. --"' Then we insert a newly devised inner tube; .--. . into the tire and close the mold. V, No external pressure is exerted on the mold; it closes of its own weight. Next, by a most ingenious means, we fill the special inner tube with water until it at tains a pressure of 200 lbs. to the square inch. This internal pressure is maintained until the tire is thoroughly cured. During the entire, process not an ounce of external pressure is applied. Hence distortion is impossible. The tire comes out a perfect, flawless, solid-molded unit, ready to deliver the limit of uninter rupted mileage. Pinching; bruising, beaddisplacement, rim cutting these things simply cant happen Vunder internal hydraulic expansion. National Speedway has found the quick route to customer good will. JiL Special Message Tire Dealers to Sell Speedway Tires under a new co-operative plan that means not only bigger profits but a sounder and more stable business Y PEEDWAY Tires have undergone a radical i change not only in method of manufacture, but in method of merchandising as well. Our trade policy is unique. It makes of the dealer something more than a mere intermediary between ourselves and the ultimate consumer. It makes him a partner with a partner's share in the profits. It insures for him ample financial assistance if he needs it and can prove his responsibility or integ rity. This is not an empty promise, as. many Speedway dealers will tell you. It is not a trick to arouse your interest. We mean what we Say. We have perfected a new policy of selling that makes it possible for a dealer who is honest and aggressive to get into the tire business in a big way with a small amount of capital. This is a long step in the right kind of co-operative selling. It places the proper premium on BRAINS and SELLING ABILITY and INTEGRITY. Have you all THREE? If you can qualify, write or telephone for an appointment. NATIONAL RUBBER PRODUCTS CORPORATION 6G0-662 N. Broad Street, Philadelphia What Mold Pressure Does When a tire goes into the mold it is just a soft plastic mass of rubber and fabric (or cord) . It can be worked into almost any shape. Now pic ture two enormous iron molds closing ovur this pliable struc ture and an external pressure of from 150,000 to 300,000 pounds applied against the uncured tire and the solid iron core upon which it is mounted. Unless' the tire is perfectly constructed'and seated in the mold (and errors are easily made here) some part of the casing is going to be dis torted. The fabric may be pinched up into the tread, the stock may be pulled or pushed into a wrong gauge, creating a bruise in the fabric or cord, or the bead may be forced up into the side wall. These are common defects that cause blowouts. And the worst of it is they seldom show on the outside. 5 K "Sb Guaranteed 6000 miles in writing M 1 7J ' 1 4$ ,s !., .z a si w y .1 i 4 1 1 it d K Ti i ? nBi 1 I CT i 1 . V ! P1IX4, I S.1 St . .. i .n.C ' -,.-'. ( "' .. . J u, "iU iHI .. - -. . ' ' m - fc . , m. .JhLi n 1 i. i. i . . tj!'.. Shy jy:. ?--'. k-'Jjyr,--';rw-"i:-v4.Aa'.,-A..- . ArLaagJ'-.fe ... vv n tvam. H.-.J if. rt"Y i -' - to ts
Significant historical Pennsylvania newspapers