WALL, No. 111.
A. W. Wall, Ltd., Hay Mills, Birmingham. – This firm may always be counted upon to provide something original. They now stage an improved form of sociable-seated tricycle. This has a very strong tubular frame, which is taken up in front to support the 4¼ h.p. Precision engine. From the crank case of this is supported a casing in which is carried a bevel gear and also the pinion for the starting handle, the latter being geared up in relation to the crankshaft. In contradistinction to the usual run of sociable tricycles, the Wall machine has one wheel in front and two driving wheels behind, these being carried on a neatly designed car type back axle fitted with a small differential gear, the final drive being by bevel pinion. The propeller-shaft has a universal joint at each end and is neatly encased. The body, which is most roomy and comfortable, is supported on long flat Cee springs. The machine is fitted with ball bearings throughout. On the same stand are shown a number of the well-known Roc gears, which are already in use on so many machines in the Show. This gear works on the epicyclic principle and employs a pair of friction bands for the operation of the two gears.
1911 Olympia Show - The Motor Cycle November 23rd, 1911. Page 1275
