26 Farmers’ Bulletin 1169. 
THE WORTHLEY NOZZLE, FOR SOLID-STREAM SPRAYING. 
In the spraying of shade trees, which, when full grown, are usually 
quite tall and large generally, the time and labor previously required 
in climbing in order to reach the top have constituted the heaviest item 
of expense in insect control. The introduction of solid-stream spray- 
ing has largely eliminated this expense, and the Worthley nozzle (fig. 
14) is a material help in the same direction. It is in 
effect a combination of extension rod and nozzle. 
‘With this nozzle the tops of trees 85 feet high and 
higher can be reached from the ground quite effec- 
tively. To break the force of the stream, so that 
small trees and the lower foliage of large trees may 
be properly sprayed, a strip of brass, slightly curved, 
about 10 inches-long and 14 inches wide, known as a 
spreader (fig. 14, B), is attached to a brass ferrule 
about a foot in length, so that it can be moved up 
and down the tube of the nozzle. When this brass 
strip is slid beyond the tip the solution forcibly 
coming in contact with it is broken up into a fan- 
shaped stream, thus giving a good mist spray. 
SPRAY HOSE. 
Only the best grade of high-pressure hose, usually 
about three-eighths to one-half inch inside diameter, 
should be used for spraying operations. The length 
of the hose for spraying from the ground will vary 
according to conditions, but should be adequate for 
the work to be done. In large tree spraying, from 50 
to 150 feet, with an average of about 100 feet of hose 
is desirable, and this will be long enough to permit 
the spray men to work around the tree without 
hindrance. Special conditions may require greater 
lengths of hose. ol 
HOSE COUPLINGS AND CLAMPS. 
It is poor economy to use light-weight hose cou- 
plings and clamps, since rough usage will soon cause 
Fie. 13.—Bamboo : 
spray rod. them to break or blow out. Heavy couplings and 
(Quaintance and 
Siegler.) 
clamps are obtainable, and these will give better 
satisfaction. 
TANK FILLERS. 
During spraying operations it is highly important to refill the 
spray tank quickly, since delays in filling waste the time of the team 
and spray men. Unless the community is provided with a conveni- 
ent water system, a tank filler is practically indispensable. This 
device, which usually operates on the jet system, will promptly fill 
the tank from any source of water, such as a cistern, pond, etc. 
2. “Qos 
