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Expired
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George Washington Dorr
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Individual
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Individual
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Publication of GB189721098ApublicationCriticalpatent/GB189721098A/en
21,098. Dorr, G. W. Sept. 14. Tyres, pneumatic, are provided with projections C made in one piece with or attached to, the tread of the tyre, and divided by a circumferential groove D. These projections are arranged at an angle as shown, whereby one comes in contact with the ground as the preceding one is passing out of contact air spaces also remain between the projections, whereby adhesion to the road is prevented. Two modificitions of the arrangement of the projections are shown in the Specification.
GB189721098D1897-09-141897-09-14Improvements in Tires for Velocipedes and other Vehicles.
ExpiredGB189721098A
(en)