92 



T BIN ID AD AND TOBAGO BVLLETIN. [XVIII. 2. 



rig. 11. 



Fig. 11. —Double action Frieiul pumjj with two leads of hose as used for spraying. 



SPRAYING ACCESSORIES. 



Strainers. 



Strainers are one of the important parts of any outfit and tha better 

 a liquid for spraying is strained, tlie better tlie pump will work and the 

 longer it will last. All solutions should be strained twice ; firstly when 

 they are being mixed and secondly before they are poured into the spray 

 tank, barrel or drum. Careless straining means clogged nozzles and 

 delay in work. A good strainer can be made out of any oblong box, 

 the sides of which should be sloping. The wire cloth forming the 

 bottom of the strainer should be fastened on at an angle so as to allow 

 the liquids to pass through better. lb is best to use brass wire cloth 

 and the meshes should always be 20 to the inch. 



Hose, Hose Bands and Hose Couplings. 



Only the best rubber hose, specially made for spraying, should be 

 used of h inch bore. Ordinary garden hose should never be used as it 

 will not stand the pressure required for spi'ayiug. 



Couplings, (figs. 12 & 13) having hexagonal nuts arc the only ones to 

 use so that an ordinary shifting spanner can turn them. Rubber or 

 leather washers should be used in all connections an;l couplings. 



