SPRAYING AND DUSTING APPARATUS 



71 



FIG. 46. Spray-guns in operation. (Friend Mfg. Co.) 



even for spraying old and ^ _ 



very tall apple trees, a type 

 of nozzle which delivers a 

 solid stream of small di- 

 ameter through a nozzle end- 

 ing in a tube of about one- 

 eighth inch diameter for two 

 to five or six inches, is used. 

 This requires a high pressure 

 and forces the liquid high in 

 the air where the pressure 

 against the air tends to break 

 it up into a mist. For or- 

 dinary work in the orchard 

 this type is not available. 



Spray-guns. A recent de- 

 velopment of the spray nozzle 

 of the ordinary type and the 

 solid stream nozzle is the 

 spray gun. This is a nozzle 

 which can be made to deliver 

 a mist like the ordinary FlQ 47 .Solid stream nozzle in operation, 

 nozzle or a solid stream or (Courtesy the Bean Spray Pump Co.) 



