SPRAYING AND DUSTING APPARATUS 



65 



I 



FIG. 36. A two-cylinder pump for use with tank. Good capacity and easy 

 operation feature this type. (Courtesy the Friend Mfg. Co , Gasport, 



7. The valves, with their 

 seats or cages, should be readily 

 removable for cleaning, and 

 should be so constructed that 

 they remain evenly ground. 



All of these points may not 

 be embodied in any one pump, 

 but most of the better pump 

 manufacturers are embodying 

 these features in their newer 

 models, a good example of 

 which is shown in Fig. 34. 



Barrel, knapsack, and bucket 

 pumps are manufactured which 

 have separate tanks for oil and 

 water which are mixed in a 

 desired proportion and sprayed 

 FIG. 37. Gasoline power sprayer, com- as a mechanical mixture. 



plete Note wide tread steel wheels, They have been found unre- 



steel tower on tank, and intake hose ,. , , . 



for filling tank where running water liable in controlling the amount 



is not available; 3^ h.p., 4-cycle o f o [\ anc j are not now in 



gasoline engine, will maintain 10 



nozzles at 200 Ibs. pressure. 



general use 



