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The Hopkinson pressure bar was first suggested by Bertram Hopkinson in 1914 [1] as a way to measure stress pulse propagation in a metal bar. Later, in 1949 Herbert Kolsky [2] refined Hopkinson's technique by using two Hopkinson bars in series, now known as the split-Hopkinson bar, to measure stress and strain, incorporating advancements in the cathode ray oscilloscope in conjunction with ...
Weir boiler feedwater pump. The company was established in 1871 as an engineering firm by two brothers, George and James Weir, founding G. & J. Weir Ltd. [3] The Weir brothers produced numerous groundbreaking inventions in pumping equipment, primarily for the Clyde shipyards and the steam ships built there.
Choke valve, Butterfly valve used to limit air intake in internal combustion engine. (Not to be confused with choke valves used in industrial flow control, above.) Clapper valve: a type of check valve used in the Siamese fire appliance to allow only one hose to be connected instead of two (the clapper valve blocks the other side from leaking out)
A camless or free-valve piston engine is an engine that has poppet valves operated by means of electromagnetic, hydraulic, or pneumatic [1] actuators instead of conventional cams. Actuators can be used to both open and close valves, or to open valves closed by springs or other means.
Oetker products are made at Colton near M1 junction 46 and Sherburn-in-Elmet; at Thorpe Park Business Park in the east of Leeds also is Northern Gas Networks and Republic (retailer). Ellie Louise , a clothes retailer, is at Sturton Grange north of Garforth on the A642, south of M1 junction 47 on the Helios 47 Industrial Estate, near Ginetta Cars .
The valve takes the shape of a ball with a ring around the waist, like the planet Saturn, hence the name. The mechanism contains a small steel ball, held in the ring, which blocks the hole. By pushing the ring in any direction, the player moves the ball out of the way and the fluid can be ejected.
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