Variable Speed Gear

1926.

Variable Speed Gear Ltd, of Broadway Court, Westminster

Manufacturer of power transmission devices

1912 Company incorporated - part of Vickers

1924 Variable speed gear for ordnance, steering gear, windlasses, winches etc.

1928 'The main features of the Williams-Janney variable delivery pump are probably familiar to most mechanical engineers. The pump was introduced in 1907, and since that time has been supplied in large quantities by the makers, Messrs. Variable Speed Gear, Limited, of 6, Broadway, Westminster, S.W.I., both for pumping work proper and as an element in their well-known hydraulic transmission gears. The pump has, however, recently been re-designed by the incorporation of a number of important mechanical improvements, and the description of an interesting plant, which has recently been installed at the large oil-cake mills in Liverpool, of Messrs. J. Bibby and Sons, Limited, forms a convenient opportunity for dealing with the new model of the pump, which is known by the makers as V. S. G. Mark III....... The pump, which is mounted on a common bedplate with its driving motor, has a variable delivery of from 0 to 110 gallons a minute against a constant head of 700 lb. per square inch. It supplies pressure oil direct to two accumulators feeding a battery of 30 seed presses and other hydraulic machinery. The electric motor, which drives the pump direct, was supplied by Messrs, the Lancashire Dynamo and Motor Company, Limited, of Manchester,....'

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