FAUCETSTOPS. 97 



PUMP VALVES. 



The water-proof quality of the caoutchouc compounds and 

 sponge renders them suitable materials for the above purpose. 

 An application has been made of a valve similar to the self- 

 acting valve-tube before described, and patented by another.* 

 This valve is intended for ships' pumps, and is said not to be 

 liable to be choked, like other valves. It is made of gum- 

 elastic compound, see plate , fig. . 



CHAIN PUMP VALVES. 



A very simple and useful chain pump, represented by fig. , 

 plate , is being extensively mtroduced in the United States. 

 It is suggested by the writer, that gum-elastic sponge stops upon 

 covered cordage, would be far cheaper and better for this pur- 

 pose than the iron chain, and iron valves or stops that are now 

 used. 



FAUCET STOPS. 



There are numerous ways of applying the caoutchouc fabrics 

 for the improvement of faucets. Among these inventions may 

 be noticed the one first made,f represented by fig. , plate 

 In this the stop of elastic compound is ingeniously applied in the 

 form of a cone. Another, J as represented by fig. , where the 

 fluid passes through an elastic hose, and is stopped either by a 



* Dr. E. Pratt, New York. 



t Invented by Dr. Charles Stearns, Springfield, Mass. 



t Invented by 



