Improvements in or connected with mechanically propelled road rollers, traction engines, agricultural engines and the like

摘要

415,197. Road rollers. ALLEN, G. W. G., The Elms, Iffley, and ALLEN & SONS (OXFORD), Ltd., J., Cowley, both in Oxford. April 5, 1933, No. 10229. [Class 6 (i).] A steam road roller is modified so as to be driven by an oil engine preferably of the compression-ignition type. The oil engine 10 is mounted on the boiler 11 and drives a shaft 21 through chain gearing 15, a shaft 17 and spur- and-chain reversing gearing 27, 18, the reversing gearing being operated by clutches 23 controlled by the original reversing lever 25 of the steam engine. The shaft 21 may take the place of the steam-engine crank-shaft and may drive the rear wheels through the original two-speed gear 28-31, and reducing gears 33, 34 and 35, 36. The cooling water for the engine is contained in the boiler and is circulated by a pump 37d which may be the original feed pump. The engine exhaust passes from a pipe 42 into the chimney 41 and a silencer 43 may be provided comprising nests of dished plates 44, a venturi tube 45 being fixed at the top of the chimney. Cooling air is drawn by the exhaust gases from the fire-box 39 through the boiler tubes 40. The oil fuel is contained in the original water tank 37 and is raised by a pump 37c to a tank 37a above the engine. A fire or a lamp may be provided in the firebox to prevent the radiator water from freezing in cold weather. The radiator water may be used for spraying the wheels. The cooling water may be taken at different levels from the radiator. The removal of the steam-engine flywheel allows one of the rear wheels to be moved inwards to increase the lap between the front and rear wheels. The other rear wheel may be similarly moved in.