Page:Federal Reporter, 1st Series, Volume 7.djvu/933

 ADAIB V^ THATBB. 931 �those in the orator's and the defendant's pumps are. But this location oi the inlet and the valves, operating as valves below the piston, is made practioable by having a long pas- sage from the chamber above these valves to the piston cylinder below the stroke of the piston, and opening into it, and is neeessary in order to carry.oiit the idea of the in- venter that the pump, when in use, should, as set forth in the patent, be "always ulled with water at the bottom to a height a little way above the opening into the passage, so that the piston, in its descent, always dips into the water bef ore it cornes to the end of its stroke, and drives that vrater, with the air before it, up the passage, whence they are dis- charged through the port.", The orator's and the defendant's pumps &ie lifting pumps, for raising water, and have their valves operating as valves below the piston, praotically lo- cated there, with their inlets opening upward to them from below in the usual way, and still have open water heads above the valves flooded with water, when they are working, that will prime the working parts, and through which the valves and piston are likewise accessible for clearing from obstructions and making repairs. The lower parts of the shells of these pumps are not whole, like that part of the shell of Craddock, so as to make them self-sealing, with water on the lower side of the piston, as his is, and they could not be made so, and retain their compactness and efficiency as lifting water pumps. Neither could his be ohanged to a lift- ing pump for water from directly below, without taking away that feature of it as an air-pump. His patent would hardly suggest the orator's pump. The difference is so great that it is not at all clear that this patent, if it had been in evi- dence, would have led to any different resuit, but rather the contrary. �So there appears to be no warrantable ground for grantins the motion. �Motion denied. ��� �