Percy Pitman

January 1906.

1906.

‎‎

Pelton Water Wheel. 1906.

February 1911.

Designer of single and multiple nozzle Pelton wheels and governors.

The business of Percy Hector Pitman, initially at Bosbury, near Ledbury, later at 3 Willcot Road, Acton, London.

1901 'Mr. P. Pitman of Halifax' supplied a 3ft diameter Pelton wheel, with two nozzles, to the Tamer(?) Waterworks, Chester. It was combined with a steam engine to drive a dynamo for lighting.

1903 An encased Pelton wheel, the 'Hector' water motor No. 2, with stop valve and driving pulley, manufactured by Percy Pitman, Bosbury and Ledbury, Herefordshire in 1903 is in the possession of the Science Museum. Entry here.

1904 50 HP Pelton wheel with three nozzles described and illustrated in Page's Weekly here, and in Engineering 1904/07/15, which illustrated a machine constructed by Pitman to the order of A. and Z. Dow, Queen Victoria Street, London, for driving air-compressors and drop-stamps in connection with the prospecting plant at some goldmines in Rio.

1906 Description of a standard high-pressure Pelton water-wheel constructed by Percy Pitman, of Bosbury, Ledbury. 'With a pressure of 700 lb. per square inch, equivalent to a head of 1614 ft., and a consumption of 10 cubic feet of water per minute at 1000 revolutions per minute, the wheel develops 25 brake horse-power. The diameter of the pitch circle is 30 in. The wheel is composed of steel, a plate accurately turned up on its own shaft, and balanced. The buckets are of phosphor-bronze, milled out to straddle the rim of the wheel plate; they are fixed to the plate by turned steel bolts, the holes being reamered out to a first-class fit. The buckets are polished, and the dividing-wedge and front lip is ground to a knife-edge ...'

1907 Pelton wheel-driven winch for hauling 10-ton wagonloads of slate up a 40 degree incline at the Cambrian mine at Glyn, North Wales. Pelton wheel 4 ft diameter, head ~100 ft. There was no governor, the speed being controlled by a lever-operated jet deflector

1907 Description and drawings of a water turbine made by Percy Pitman, of Cropthorne, Pershore, to the order of the Glasgow and West of Scotland Technical College, for experimental use in the Mechanics’ Laboratory. It was constructed to work under a head of 55 ft. of water, and provided with six interchangeable nozzles of phosphor bronze. Plate-glass windows were fitted on both sides of the wheel-chamber, so that the action of the jet on the buckets could be observed. A hollow brake-drum, with internal channel for water-cooling, was keyed to the shaft, so that the power developed could be measured.

1908 Percy Pitman of Cropthorne advertising 'The latest Mechanical Toy, the "Tango-motor" '

1909 Description and drawings of Pelton wheel and hydraulic relay governor constructed by Percy Pitman, of 3, Willcott Road, Acton. 'The wheel operates under a head of 120 ft., and with both nozzles in operation generates 80 brake horse-power.'

1909 'Mr. Percy Pitman, of Acton, has secured an order from the New Zealand Government for two hydraulic governors for regulating the speed of two 80-h.p. Pelton wheels, which are used for driving stonecrushing plant at the Mount Egmont Branch Railway, New Zealand.'

1911 of 3 Wilcott Road, Acton, London

1913 Description and drawing of Pitman's five-nozzle impulse water turbine.

1914 Description and illustrations of Pitman's new governor for water turbines

1915 3200 bhp Pelton wheel for India. 275 rpm. 850 ft head. Pitch diameter 85". Pitman's business address: 25 Victoria Street, Westminster.

1926 Description in 'The Engineer' of a 3 bhp Pelton wheel and governor at East Greenwich gasworks, driving a coal conveyor

1927 Description of Pitman's governing gear for impulse water turbines. Reference to a large Pelton wheel set under construction for India The net effective head of water 1,200 ft., maximum output 3,320 BHP at 750 rpm.

See Also

Loading...

Sources of Information

• [6] Bosbury History Resource website - PERCY HECTOR PITMAN 1871-1961