NOZZLES 



185 



Fig. 85 a. 



FiQ. 85S. 



or two of thom and thus bringing the cost of his power outfit 

 nearly down to that of a good barrel pump. 



Nozzles. — Next to the pump in importance, in fact more 

 important in some ways, is the nozzle. The number and variety 

 of them on the market would bewilder a novice, yet they may 

 nearly all be reduced to three or four principal types. 



The Vermorel Type. — This 

 is a relatively small nozzle and 

 delivers a small amount of 

 liquid as compared with other 

 types. This shortcoming is 

 usually gotten around by mak- 

 ing them in clusters of two or 

 more, but of course such a nozzle 

 is heavy and therefore hard to 

 use (Figs. 84.1 and 84B). This 

 type gives a very fine, mist-like 

 spray, but the small size of the 

 orifice renders it very liable to 

 clog, and tliis in turn makes it 

 necessary to have some kind of 

 ejector to push out the clog. 

 This means a double annoyance, 

 first because one must constantly 

 stop and clean the nozzle and 



-It ii • . • a relatively coarse snrav which is fre- 



second because the ejector is quentiy objectionable 



,.,,. ,1 J.11- 1. Fig. 85S. — Disc nozzle. This i.s rapidly 



liable to catch upon the branches displacing other types for most work. It 



, . . , , , . , seldom clogs, does not catch on branches, 



and twigs when one attempts to makes a fine spray, and delivers a large 



, , . . , „ , , , -n amount of material in a given time. 



spray the mside oi the tree. JB or 



these reasons the vermorel has largely gone out of use except 

 with smaller pumps like the knapsack, where it is still the main 

 type used. 



llie old Bordeaux nozzle is still largely used in many sec- 

 tions. It thi-ows a relatively coarse spray, which is not suited 

 to many kinds of work. It will throw a long distance, which is 

 very important for high trees, and for such spraying as the 



Fig. S5A. — Bordeaux nozzle. Useful 

 in spraying tall trees, as it will throw the 

 ly material a long distance, but it makes 

 sla ■ ■ 



