Wheels and wheeling; an indispensable handbook for cyclists, with over two hundred illustrations . ning it. Almost any air tire will work well for ashort period; many will behave excellently for months,but nothing less than a seasons use will demonstratebeyond yea or nay the practicability of any particularform of air tire. Taking up the tires in alphabetical order, the firstone is the Beer Spongy tire, which, it is claimed,will not split from within; is light and elastic; doesnot puncture, and can be made to fit existing this invention a large hole is made in the tire,slightly eccentr
Wheels and wheeling; an indispensable handbook for cyclists, with over two hundred illustrations . ning it. Almost any air tire will work well for ashort period; many will behave excellently for months,but nothing less than a seasons use will demonstratebeyond yea or nay the practicability of any particularform of air tire. Taking up the tires in alphabetical order, the firstone is the Beer Spongy tire, which, it is claimed,will not split from within; is light and elastic; doesnot puncture, and can be made to fit existing this invention a large hole is made in the tire,slightly eccentric to its outer diameter, and is thenfilled with spongy rubber such as is occasionally em-ployed for flesh-rubbers and similar toilet elasticity is very considerable, its lightness is pro-nounced, it is next to impossible for it to get cut bythe rim, and, as a matter of fact, it is a modified form 24© WHEELS AND WHEELING. of pneumatic; that is to say, in the process of manu-facture, the spongy rubber assumes the shape of cells,all of which are charged with air at normal pressure,. Beer Spongy Cushion Tire. and this air is being continually compressed at thepoint of contact. The Bidwell [Thomas] tire is shown in the follow-ing cuts. The air tube is the one part of a pneu-matic tire that causes the most trouble, and has beenthe subject of considerable experimenting. To confineand retain air under pressure in a rubber tube, andguarantee the tube against bursting, was the objectsought and accomplished. Our air tube is constructedof pure Para gum, and treated with a compound thatcloses all the blow holes which exist in rubber, andwhich cause the leakage in most pneumatic guarantee our air tube against bursting and leakageof any kind not caused by puncture through the outsidecovering. The non-expansible tube is next in impor-tance, as it protects the air tube and prevents theexpansion of the rubber tube to a bursting point. In PNEUMATIC AND CUSHION TIRES. 241 a
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License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidwheelswheeli, bookyear1892
