Delaunay-Belleville.
Page 45
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3i-4 ton Lorry. Four-wheel Drive Tractor.
STAND No. 83.
British Agents : Delaumay-Belleville Automobiles, Ltd., Carlton Vale. Maids Vale, Landon, N.W. fi.
THIS well-known French concern has two exhibits on its stand. These consist of a 34 ton lorry and a fourwheel-drive tractor of very interesting design. To deal first with the lorry : this has a power unit with a bore and stroke of 100 ram. and 140 ram. respectively. Its normal speed is 1,000 r.p.m., and it is classified as 22:28 h.p. The cylinders are of the L-headed type, cast m pairs with all the valves on the near side. The cooling water is ciiculated by a centrifugal pump through a honeycomb radiator.
From the engina the power is taken through a clutch of the dry multiple-disc type to a four-speed-and-reverse gearbox of the sliding gear type. The countershaft, carrying the chain sprockets, is bevel driven and incorporated with the gearbox, and the final drive is by -open roller chains. The engine is governed to give an approximate maximum speed on top gear of 19 m.p.h. On the vehicle shown wood wheels are employed, but cast steel can be provided when required. The frame is etrongly constructed of pressed chaunel steel, tapered to front and rear, and slightly inswe.pt to allow for a large lock.
The rear axle is of straight girder section with the wheels running on ball bearings, whilst the front is a stout drop forging.
Towing hooks are provided at both ends of the frame, and there is also a sprung trailer coupling. Some of the particular points of the chassis are: the spring suspension of the radiator, the three-point suspension of the engine and gearbox, and the use of ball bearings throughout the mechanism. The four-wheel-drive tractor is a machine of considwable interest. It has an engine with a bore and stroke of 125 mm. and 160 mm. respectively,
classified as 50-70 h.p. The drive is taken through a dry multiple-disc clutch to a gearbox giving four speeds forward and four reverse. The transmission to the front and back axles is by cardan shafts, and thence through double reduction bevel and spur gears to the axle shafts. The front wheels are driven from the latter through universal joints, and these wheels are provided with very powerful internal-expanding brakes. Similar brakes are also employed on the rear wheels. Another shaft from the gearbox drives a winding drumat the rear of the machine through the medium of worm gearing.