Spraying Devices and Machinery. 



193 



pump to indicate the pressure 

 under which the work of spraying 

 is done. These pumps are made 

 of different sizes. 



The Nixon Nozzle & Machine 

 Co., Dayton, O., was the first to 

 manufacture a geared spraying 

 machine. It was called the " Field 

 and Orchard Machine," and was 

 designed by A. H. Nixon, the 

 founder of the firm. The machine 

 was introduced in 1887, it being 

 sent to several persons to be tested. 

 In 1888 it was offered to the pub- 

 lic. Fig. 14 illustrates the general 

 construction of the machine as first 

 sold. It will be noticed that the 

 four nozzles are situated in front 

 of the wheels, instead of at the 

 rear as is now generally the case. 

 The tank held 100 gallons, and 

 was built in the form of a cube, 

 instead of barrel-shaped. The 

 price was seventy-fhe dollars. 



FIG. 13. Pneumatic spray pump. 



FIG. 14. The first geared spray machine advertised in America. 

 O 



