180 



The essentials for spraying are the pump, the con- 

 tainer, the hose and the nozzle. The pump should be strong 

 and durable, and is generally best when the working parts 

 are of brass. An agitator is also essential ; this is generally 

 attached to the pump. Most of the spray mixtures that are 

 used require to be Constantly stirred in order that the spray 

 shall be of uniform quality during the entire operation of 

 spraying. The nozzle is also of first importance. Its 

 structure should be such as to produce a very fine spray, 

 thrown, with force from the aperture, and an extension 

 consisting of a suitable length of gas pipe should be used to 

 connect the nozzle with the hose, in order that the distance 

 between the nozzle and surface being sprayed may be very 

 short. 



Fig. 169. Spray nozzles. 

 (1) Bordeaux ; (2), (3) and (4) varieties of Vemorel. Reduced. (Original.) 



The Vermorel nozzle is a form which produces such 

 a fine spray. This is made in several different patterns, 

 but the essential features are the same in all. The nozzles 

 shown in Fig. 169, Nos. 2, 3, and 4 are patterns of this type. 

 No. 4 being merely two nozzles fixed to a single feed pipe, 

 Nozzles in groups of three or four are also manufactured. 



The Vermorel nozzle is especially suited for spraying 

 solutions, and mixtures containing no solid particles which 



