Points of a Spraying Outfit 335 



Pump, etc. 



Slippage (rated capacity less actual delivery). 



Uniformity of pressure. 



Efficiency of pressure regulator in maintaining uniform 



pressure when hose is cut off or is on. 

 Drop in pressure between pump and nozzle. 

 Amount of overflow from pump to tank when working at 



normal capacity. 

 Outfit- 

 Efficiency of agitator. 

 Time required for refilling tank. 

 Ratio of weight to capacity. . 



Accessibility and convenience. 

 Accessibilty of working parts 



Valves: Ease of replacing valve-seats. 

 Drains: Engine, pump and tank. 



Plunger-cups or packing; repacking stuffing-boxes (if any). 

 Screws; bolts; oil-cups; pressure-regulator. 

 Method of taking in slack between pump and engine. 

 Cleaning strainer on suction hose; cleaning tank of debris. 

 Adaptability to field conditions 

 Cramping of wheels in turning. 

 Radius of circle required in turning. 

 Possibility of miring in irrigation ditches or loose soil. 

 Draft. 

 Repairs 



Possibility of securing duplicate parts. 

 Ease of making repairs. 

 Construction. 

 Engine 



General construction: 



Durability; simplicity of design. 

 Exposure of working parts: 



Freedom from danger of breaking cogs, cranks, etc. 

 Freedom from danger on part of operator. 

 Proportions of working parts; quality of materials; 



workmanship. 

 Provision for drainage. 

 Method of feeding gasolene. 



