Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Thomas Robertson
Thomas Fuller Samwel Donaldson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of GB189807223ApublicationCriticalpatent/GB189807223A/en
7223. Robertson, T., and Donaldson, T. F. S. March 25. Tyres, pneumatic etc.; felloes or rims.- The air tube B is almost surrounded by the extended edges of the rim A, and between the edges a rubber tyre C is placed. The air tube receives the pressure from the tyre C, and on the tread of the tyre are flanges c which, when the tyre is pressed inwardly to its limit, rest on the edges of the rim. The tyre C and air tube may be separate or combined, and the rim may have any convenient shape.