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Jas Turnbull
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Individual
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Publication of GB189700547ApublicationCriticalpatent/GB189700547A/en
547. Turnbull, J. Jan. 8. Toothed wheels for bicycles &c. The teeth of wheels working at about right-angles to each other are round and more or less conical; they are preferably in the form of rollers, and may be supported at their outer ends.
GB189700547D1897-01-081897-01-08Improved Toothed Gearing for Bicycles and other Machinery.
ExpiredGB189700547A
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