Patent GB-191107301-A (GB)
Title: Raising or Forcing Water and other Liquids.
Inventor: JOY BERTRAM CHARLES
Filed: 1911-03-23
Granted: 1912-06-24
Abstract: 7301. Joy, B. C., and Kirke, P. St. G. March 23. [Cognate Application, 20,474/11.] Direct explosion apparatus.-In an internalcombustion pump, in which the liquid is acted upon directly by the explosion pressure, the working fluid is adequately and finally compressed during the outward movement of the liquid, and is subsequently admitted to the combustion chamber of the pump in such compressed state before combustion commences therein. Fig. 1 shows one form of apparatus which operates in the following manner. Assuming the combustion chamber A to be nearly full of liquid with a compressed combustible charge above it, combustion occurs, and the liquid is forced through a delivery valve F into the delivery pipe C. The opening of the valve F causes a valve G to open simultaneously, and a portion of the liquid flows into a compression chamber D containing fresh combustible charge, which is compressed and forced into a storage reservoir L. As soon as the liquid comes to rest, the delivery valve closes, and at about the same time, the pressure in the combustion chamber reaches about atmospheric owing to expansion and cooling produced by a water spray S, so that water flows in through the inlet valve E and expels burnt products through the exhaust valve N. Simultaneously, water from the compression chamber D flows back through the valve G, which is loose on the stem of the valve F, and draws fresh combustible gas into the compression chamber through the valve H. During the time that the exhaust valve N is open, the admission valve M is locked shut, but as soon as the valve N is shut by the water reaching the float 0, the valve M is set free and compressed combustible gas enters to occupy the space at the top of the combustion chamber. The pressure of the gas admitted may be considerably in excess of the pressure of the delivery head in the pipe C owing to the fact that the water enters the compression chamber D with considerable velocity, but the valve F remains shut and the water level in the chamber A remains stationary while the gas is admitted owing to the fact that the upward pressure on the valve F is partly balanced by the downward pressure on the valve G. The ignition may be effected either by a hot tube or by a sparking- device controlled by pressure fluctuations in the apparatus. The following modifications are described. (1) The inlet valve M may be floatcontrolled, and the exhaust valve N may then be an automatic balanced valve adapted to open when the pressure in the combustion chamber is about atmospheric, and to close when the pressure is considerably above or below atmospheric. (2) The valves F, G may be fixed relatively to each other so that they open and close together, in which case the valve G is fitted with a secondary valve opening towards the combustion chamber to allow back-flow from the compression chamber. (3) Two combustion chambers may be combined, and the storage reservoir for compressed gas dispensed with. In this case, the explosion stroke in one chamber causes a charge of compressed gas to be forced into the other chamber, simple non-return admission valves without locking-gear being employed. The ignition in one chamber is controlled by the movement of the exhaust valve in the other chamber.