Green were motorcycles produced in 1909 and 1921 by Gustavus Green of Berners Street, London. Gustavus Green had been building water-cooled engines since 1905, but in 1909 he offered complete machines fitted with his special cylinder with ohv and a copper radiator on either side. A divided tank formed the top member of the frame, with the front section carrying excess water. Belt driven, it was fitted with Druid forks.
1910 Cycle and Motorcycle Exhibition
Green’s Motor Patents Syndicate, Ltd.
55 Berners Street, London, W. Stand No. 94.
It is several years since the Green Motor was introduced to the Shows, but it has not been idle meanwhile, as witness the aviation exploits accomplished with it. Watercooling is the Green watchword. The cylinders have copper water jackets and overhead valves. Two small honeycomb radiators are arranged, one on each side, and the water circulates naturally through these and the reservoir in the tank. The tank as a whole is made to serve as a member of the frame in place of the usual top tubes: a capital idea. Both valves are mechanically operated, and their seatings are detachable – as they ought to be. The Syndicate invite agents to communicate with them, and we understand the terms offered are very favourable.
There was then a gap of many years when Gustavus and his son, Charles, were involved with the Regal-Green make, who fitted their 499cc water-cooled engine up to the war. Gustavus then went on to become involved with engine design for aircraft and motor gunboats during World War I, before retiring to concentrate on advanced ideas in horology and photography. 1921 The Green motorcycle appeared once more in the form of a 3½ hp water-cooled machine in its pre-war form. This was probably for stock clearance purposes. Source: Graces Guide
Image from The Motor Cycle 1920 – courtesy Dave Richmond