135 
plant and not oe fall on it. Fig. 74 shows a type of 
: . nozzle which is efficient and 
much used. The spray from 
it is fine and funnel-shaped. 
A small button, when pressed, 
~ Clears the aperture in case of 
Fig. 74.—Deming—Vermorel spray- , 
Roecto. clogging. The caps, through 
which the spray issues, are inter-changeable and furnished 
with apertures of different sizes, so that variation in the size 
and range of the spray can be easily obtained. Fig. 75 shows 
a nozzle which, although not so well known, is becoming a 
favorite. It has the advantage of being automatically self-clean- 
ing. When clogged, the pressure drives a spring back and 
allows the impediment to be driven out; it also closes itself as 
soon as the pumping stops, thus preventing leakage. The 
spray is fan-shaped and the range capable of adjustment. It 


Fig. 75.—McGowen automatic self-cleaning nozzle. 
is very useful, especially in orchards. A nozzle with a great 
and well-founded reputation is the ‘‘cyclone nozzle.” It takes 
its name from the rotary motion of the cone-shapedspray. The 
stream enters the chamber, which contains the exit-orifice, in 
a tangential direction, producing a rotary motion which is 
communicated to the cone of fog-like mist which constitutes 
the spray. This nozzle is very useful for many purposes. It 
is usually set so that the spray comes out at right-angles to 
the handle and is, for this reason, very effectual in getting 
under vines and bushes. The Nixon nozzle produces a spray 
by driving a small, solid stream through a wire-netting. 
These nozzles are furnished with meshes of various sizes so 
as to produce a fine spray or one of greater range. It is 
