Salt Lake Tribune | 1919-05-25 | Page 48 | Suggestions for Norwalk Tires

kept covered when carried as spares, and if stored In the garage should he kept in a dark, confined place, where the temperature tem-perature la low. In the case of inner tubes, special care should be given, for the tube must remain elastic and flexible and must not crack. The tube is subjected sub-jected to a great deal of heat when in the tire and should be saved any excess aging in storage, A liberal use of talc or soapstone on the inside of the tire before the tube is put in will help to overcome the bad effects of heat when the tire is in action. The Norwalk Tire company says it should be noted that the bad effects of heat, due to fast driving or to driving over hot sands or hot pavements, are not caused by increase in pressure of air in I the tire. It is almost impossible for the I heat of driving or of hot roads to increase air pressure to a degree great enough in itself to burst the tire. What really happens hap-pens is that the heat softens and breaks down the rubber after a time, causing the tread to come off or the layers of fabric to separate and burst. SUGGESTIONS FDR I01ILKTIS Summer time looses two forces of nature na-ture which have seriously injurious effects ef-fects on tires. One of these is beat and the other sunlight. Though these two forces are closely allied, the bad effects are distinctly different, dif-ferent, according to statements made by laboratory experts of the Norwalk Tire company. Light has a powerful, deteriorating action ac-tion on rubber. II causes oxidation of the rubber and also causes cracking. This is frequently noticed as "checking" on the side walls of tires. Heat "ages'" rubber compounds, greatly great-ly lessening the length of their serviceability. ser-viceability. It makes them hard and lifeless, and also promotes oxidizing action ac-tion by the air. Because of these harmful effects of liirht. and heat, tires should alwavs be