102 



TRANSACTIONS OF THE 



n 



m 



Race ($♦ Mathews' Yard Hydrajits and Street Washers. 



Kace & Mathews, Seneca Falls, N. Y. 



The stock A is attached by means 



of a screw to the external pipe B, 



which connects in the same manner 



with the base C; to this base is at- 



' tached the pipe leading to " Main." 



The conducting pipe D is perma- 

 nently attached to spout or nozzle E, 

 and turning with it, its lower end ter- 

 minating with a conical tubuIar-Talve 

 F, closed at the bottom, but having 

 openings, a a, on its sides lor the ad- 

 mission of the water. This Talve is 

 fitted into the conical shell or seat G , 

 which is screwed into the lower end 

 of enclosing tube B, and being closed 

 at its lower end, G, does not admit 

 the water into B, and only into tube 

 D, when the valve is so turned that its 

 openings, a a, coincide with those of & h, 

 of the seat G. This opening and do- ill i-8 



sing is effected by turning the spout or 

 nozzle E a quarter of a revolution. A 

 stem, H, from the nozzle rises directly 

 in a line with the pipe D, and enters a 

 socket in the under side of cap at top 

 of hydrant. This socket contains a 

 piece of India rubber, or other elastic 

 material, which, exerting a constant 

 gentle pressure on the conducting pipe 

 D, and compensating for any wear of 

 the valve F, insures its perfect opera- 

 tion at all times, and against any 

 liability of leakage from the wear of 

 the cock, by keeping the valve con- 

 stantly to its seat. The large opening 

 in the side of the stock, necessary for 

 the admission of the nozzle to the po- 

 sition it occupies, as well as to accom- 

 modate the movement by which it 

 opens and closes the valve, is concealed by the broad ring or 

 washer L, having only a side opening through which the 

 nozzle passes. This washer revolves with the spout freely, and entirely coyers 

 the opening in stock. 



A drip or waste orifice, m, is provided in the valve F, and its seat so arranged 

 that the two shall coincide only when the side-ports or valve-openings, a a, are 

 closed, so that no waste of water occurs while the hydrant is in use, and no water 

 can remain in the hydrant within four feet of surface when shut off, effectually 

 preventing the possibility of freezing in cold weather. This waste water is con= 



