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Alfred Roberts
George Alfred Roberts
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Individual
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Individual
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Publication of GB190803350ApublicationCriticalpatent/GB190803350A/en
3350. Roberts, A., and Roberts, G. A. Feb. 14. Tyres, pneumatic &c.-Treads or tread-bands of elastic tyres are formed with separate recesses which are in the form of grooves with transverse or oblique parts a<1> and circumferential parts a<2>. In some forms, the recesses are transverse or oblique with circumferential ends, as shown in Figs. 1 and 9, and in some cases, the ends may be curved as shown in Figs. 7, 8, and 10. In other forms, the grooves are cross-shaped, circular, or elliptical.
GB190803350D1908-02-141908-02-14Improvements in or relating to the Non-skid Bands, Covers and the like for Pneumatic and other Tyres.
ExpiredGB190803350A
(en)