. India rubber world. ner tube feature of the usualtype and yet laying claim to being absolutely puncture been recently placed on the market. In the illustration, A represents the flexiblerubber tread which ismade all in one is an ordinary innertube as used in mostpneumatic tires. Theouter tread A sur-rounds the inner tube Band both are held inplace by the steel rimsC C. These rims aremaile from vanadiumsteel and arc the felloe of thewheel by a quick-de-mountable device. Theyarc held together bybolts D which passthrough steel linedopenings or slots E inthe tread. T
. India rubber world. ner tube feature of the usualtype and yet laying claim to being absolutely puncture been recently placed on the market. In the illustration, A represents the flexiblerubber tread which ismade all in one is an ordinary innertube as used in mostpneumatic tires. Theouter tread A sur-rounds the inner tube Band both are held inplace by the steel rimsC C. These rims aremaile from vanadiumsteel and arc the felloe of thewheel by a quick-de-mountable device. Theyarc held together bybolts D which passthrough steel linedopenings or slots E inthe tread. These open-ings arc made widerthan the bolts, asshown, in order to al-low for the radialmovement of the tire as it strikes obstructions in the F f are provided on the tread, against wdiich thesteel rims set, thus preventing the air pressure from forcing thetread outwardly beyond a certain point. This feature makes itimpossible to throw the tire off the rim. (Detroit PneumaticTire Co., Detroit, Michigan.]. Pcncture-Proof Tire.
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