G.H. Dingwall & Son (Engineers) Ltd was a British company based in Dalston, London, that operated from 1892 until around 1949. Initially, the company specialized in the production of hand-propelled tricycles before venturing into motorized vehicles. In 1912, Dingwall created its first powered carriage by attaching a 1.5 hp Wall Autowheel to a hand-propelled tricycle, employing a cable mechanism that functioned similarly to a clutch. The…