National Geographic : 1915 May
These layers, of course, are vulcanized into one solid tube. Goodyear Laminated Tubes Outlast Any Tire We have built an Inner Tube-lami nated and extra-thick-which outlasts any tire. Four Tubes outwear five Casings, on the average. This year we have made them still thicker. To our smaller sizes we have added 122 per cent. To our larger sizes, 163 per cent of unadulterated rubber. Yet, despite this increased weight averaging 14 per cent-our prices are one-fifth less. On February 1st we re duced them 20 per cent. So these heavy, Laminated Tubes now cost about the same as others. Built Layer on Layer Goodyear Laminated Tubes are built layer on layer. Tubes built by machines, of one thick piece of rubber, often have undiscovered flaws. We roll the rubber into sheets so thin that flaws can be seen and discarded. Then these sheets, wrapped layer on layer, are vulcanized into a solid rubber tube. The valve patch-usually stuck on is made a part of our Tube. No loosen ing here, no leakage. This extra thickness, this pure rubber material, this layer construction and this leak-proof valve patch, make the Goodyear Laminated the greatest Inner Tube built. Get This Extra Value Lesser Tubes cost about the same as these do. In justice to yourself, get this extra value. Then remember that Good year Fortified Tires embody the same standards. They, too, excel all others in five costly, exclusive ways. Any dealer will supply Goodyear Tubes or Tires. G They Are Gray OOD YEAR Goodyear Tubes are gray, the natural AKRON.OHIO rubber color. Any other color requires Laminated Tubes mineral adulteration. Minerals absorb heat, the greatest foe of rubber. We Extra Heavy Tubes-Uncolored cannot color without making short Built .Layer on Layer lid tubes. By the Makers of Fortified Tires lived tubes. THE GOODYEAR TIRE & RUBBER COMPANY, Akron, Ohio (2317 ) "Mention the Geographic-It identifies you."