Catley and Ayres

Catley and Ayres of York
In 1869, a small three-wheeled vehicle propelled by a horizontal twin cylinder engine which drove the rear axle by spur-gearing; only one rear wheel was driven, the other turning freely on the axle. A vertical fire-tube boiler was mounted at the rear with a polished copper casing over the fire box and chimney; the boiler was enclosed in a mahogany casing. The front wheel was used for steering and the weight was only 19 cwt.[1]