The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose; (1902)
Barber, Thomas Walter. [from old catalog] · New York, Spon & Chamberlain · leaf 209
ball valve, for high lift delivery valve of large pumping engines. Balls are of guttapercha, and open and clceewithout shock, 1644. Multiple ring valve. The rings open and close in succession, thus avoiding shocks. 1645. Double beat ring valve, 1646. Double beat equilibrium or Cornish valve. The… … o 2 204 THE ENGINEERS SKETCH-BOOK. 1648. Double-beat valve, with sunk seating. 1649. Common D slide valve, with three ports. 1650. Duplex or double D slide. 1651. Another form, partly in equilibrium. 1652. Equilibrium slide valve, with circular packed trunk on back, ofarea sufficient to balance the…
Mechanical movements
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