502 



THE INDIA RUBBER WORLD 



[September 1, 1911. 



DEMOUNTABLE, DISMOUNTABLE, DETACHABLE 

 AND REMOVABLE RIMS. 



OOMETHING that would eliminate altogether, or at least 

 *^ greatly reduce the hard labor and mechanical complications 

 incidental to tire troubles on the road, has been the dream of 

 the builder and user of the automobile ever since it came into 

 general use. A large proportion of the inventions that relate to 

 self-propelled vehicles, are in some way connected with tires and 

 many have to do with removable rims. 



The objects aimed at by the designers of removable rims, in 

 addition to compactness and light weight, have been simplicity of 



ization apparent at an early stage, and the Standard Rim Co., of 

 Akron, Ohio, was one of the fruits of this need. 



Although tire manufacturers generally had long recognized the 

 necessity for standardization not one of them controlled sufficient 

 patents to produce a rim that would interchangeably take all 

 makes of both straight and clincher tires and at the same time 

 provide for quick detaching and demounting. Various ideas were 

 followed up, but it was found that none of them were practicable 

 without including some of the technical or mechanical principles 

 embodied in other rims which were covered by patents. 



Finally certain important tire manufacturers who had been 

 responsible for a large proportion of the rims heretofore made. 



Type 1 — Kor all straight Siili- and Clincher 

 Tires. (Clamp Locked.) 



l^'I)c 12 I <ir ;iii siiiii;:tir Siile ami Cliucher 

 Tires. (Clamp Unlocked.) 



Type 3— For all Clincher Tires (Wedge 

 Position). 



T.viH- 3 — For all Straight Side Tires (Wedge 

 in Position). 



United Rim Co., Demountable, Detach.^ble. 



Firestone Quick Detachable 

 Clincher. 



Continental Demountable Rim and Tool. 



Dl\.mond Demountable. 



construction, small number and simplicity of parts, ease of re- 

 moval, including freedom from liability to rust or stick fast, if left 

 for long undisturbed, and reasonable first cost. These advantages 

 are naturally claimed indiscriminately by all manufacturers of 

 remountable rims. 



Hundreds of rims have been invented during the past few 

 years, but for some time they failed to appeal to the motorist, 

 who manifested a leaning towards the quick detachable tire tyjics 

 Ultimately, however, the labor and delay involved in pumping 

 up tires on the road brought the remountable into its own and 

 it is coming more and more into use. In the following it is ro' 

 the intention to even enumerate all the rims on the market, but 

 to briefly mention the types best known and in commonest use. 



The many types of rims made the desirability of their standard- 



transferred to the United Rim Company, all of their rim patents, 

 together with engineering data and other information that would 

 render possible the establishment of a uniform standard. By 

 eliminating all features of negative value that prevent inter- 

 changeability and making the rims conform at the same time to 

 the best of established engineering principles, the standardization 

 thus effected resulted in the adoption of three rims. They tit all 

 straight side and clincher tires and also embody efficient means 

 for detaching the tire from the rim and for demounting the rim 

 from the wheel. As adopted, these rims embody the 

 good points of the Goodyear, Diamond (Marsh), Continental 

 (Gilbert), and Goodrich types, with the addition of such new 

 features as have been demonstrated to be of value. 

 The Continental "A. D." Demountable Rim (Gilbert type) is 



