SELECTING MACHINERY AND EQUIPMENT 323 



spray. In the second type, the spray emerges from the nozzle 

 in the form of a cone. The various disk nozzles and the ver- 

 morel nozzle belong to this classification. Differences in form 

 of spray in these two types are obtained by differences in 

 details of construction of the nozzles. The spray gun shoots a 

 cone-shaped spray, unless opened wide, when the spray re- 

 sembles that from the Bordeaux nozzle. 



The Bordeaux nozzle gives a direct, driving spray which 

 can be applied even in the face of a strong wind. The particles 



(Hayes Pvmp and Planter Oo.) 



Fig. 116. Spray nozzles and accessories taken from a manufacturers' 



catalog. 



100, 102, 109, 113, Disk nozzles. 106, 107, 108, Vermorel nozzles. 



101, 103, 114, Disk angle nozzles. A. Disk nozzle parts. 

 10-4, 105, Bordeaux nozzles. B. Nozzle cap parts. 



of spray are not so fine as in the disk nozzle, fineness being a 

 desirable attribute for most purposes. Less surface can be 

 covered in the same time with the Bordeaux nozzle than with 

 the disk nozzles, and its construction causes it to catch more 

 readily in the branches. 



Disk nozzles of standard make, designed for the pressure 

 that the outfit will carry, are desirable. As the hole in the 

 disk wears larger, the greater is the quantity of spray that 

 will feed through in a given time, and the more the pressure 

 will be reduced. Growers often make the mistake of not re- 



