Long's Steam-Pump. 



169 



Art. XXIII. — Long's Steam-Pump. 



Lieut. G. W. Long, of the U. S. army, has lately ob- 

 tained a patent for an apparatus invented by him, which he 

 denominates a Steam-Pump, and which, when known to the 

 public will probably find many useful applications. 



The annexed figure represents a section of this appara- 

 tus. It will be seen to consist of two symmetrical parts. 

 EF is the barrel or suction pipe having a valve opening up- 

 wards at E. GHIK is the receiver. OP is a steam-pipe, 

 having a valve at R so constructed that steam may be admit- 

 ted to one receiver, and cut off from the other, at the same 

 instant. The steam is supplied from a boiler, which is not 

 represented in the figure. MN is the discharging tube, and 

 has a valve at N opening downwards, which is kept closed 



Vol. XIV.— No. 1. 22 



