Leylands for Oilfields and Railways
Page 59
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ANEW oilfielti servicing rig has been developed by Woodfield Hoist and Associated Industries, Rochester, which weighs 20 per cent. less than earlier types. The latest design, known as the W.4S. rig, is being mounted on Leyland Super Hippo chassis and complete outfits are on order for oil companies in different parts of the world.
The W.4S is designed for servicing 4,000-ft. wells and differs from earlier models in that actuation of the hoist is by the main engine, instead of by a separate power unit. The drive to the hoist is takeA through a fluid torque converter which transmits full engine torque independently of the vehicle gearbox and provides protection against shock loading.
The weight of the outfit is 20 tons. Steering is power-assisted and, in addi
tion to the normal cab, there is another two-man cab mounted behind, so that five men can be carried in all.
The New South Wales Department of Railway,, recently built a vehicle to carry breakdown gangs and equipment on a Leyland Comet petrol-engined chassis. A steel floor is incorporated to take the weight of heavy items and lockers are provided for carrying
clothes and food. The vehicle is fitted with an Eaton two-speed axle.
This has a spiral-bevel drive for the high-speed ratio and an epicyclic geartrain reduction system for the low-speed ratio The body was built in the Department's own workshops. The chassis has a 14-ft, 2-in. wheelbase. A searchlight is fitted on the roof of the cab.