ROTARY BLOWERS 
233 
slop out slightly. To prevent this a hollow lip may be added, as in 
Fig, G, to catch the lower part of the spray and allow it to flow back. 
In the figure just cited this arrangement, *, and the drum d are shown 
in section. The spray-discharge being at s, the heavier part of the 
Bpray is lowest, and passes into the hollow lip, //, thence flowing down- 
ward to re enter the base of the drum at J', where the constant depth 
Of water is indicated by horizontal broken lines, and ZSUOWQ the water- 
inlet, above which the water cannot rise in the drum. At/ is shown 
the peculiarity of one of the fans. Its end, t, is seen to be provided 
with teeth or hooks, which alternate in two rows, and each has its dis- 
tal hall' bent forward at right angles to the tan. These cut through 
the liquid, allowing the blast to enter it, and they also cut up, splash, 
and carry some of the liquid which is blown out at s by the blast from 
the lace, 7*, passing outward through these teeth or hooks. 
A single dram may have two outlets, one near each end, and so throw 
two sprays at different angles; but the outlet farthest in the direction 
of rotation should be much the largest, to give an equal spray, as shown 
in one blower, which I planned for this purpose. 
Unfortunately, my experience shows that a rotary-blower blast carry- 
ing a fluid spray cannot well be divided, or have its direction changed, 
by pipes or deflectors, because it s impact against any surface that would 
alter its course condenses the Spray there, so that it is left from the 
blast and flow s down. 
It is easy to use these machines for sprinkling in a horizontal direc- 
tion or from above, but to throw up underneath the foliage of low plants 
they must be carried very close to the ground. 
There are various w ays of conveying and operating these blowers, and 
the follow ing machine will serve as an example: 
Mr. D. E. Darnell, of Masonville, Ibirlington County, Xcw Jersey, 
has lately obtained a patent, No. 254804, March 14, L882, on a rotary- 
blower apparatus, for distributing insect poison and fertilizers, that 
merits attention in this connection. It appears in Plate XXVIII, Figs. 
and 7, and consists of a barrel, a, rotary agitator, c, a rotary blower, 
», with a belt, .s-, and train of gears,/, e, /<, / driven by the rotary axle, 
tf, of a pair of wheels that carry the whole machine, w hich is drawn by 
one horse in shafts. By a clutch the main wheels are released from 
driving the gears to throw the apparatus out of action. 
It may be seen that the reservoir has the arrangement of a common 
horizontal barrel churn, and the rotary dasher, c, inside is driven by 
cog-wheels, /; c. The gear,/, also communicates through gear, J, its axle, 
fc, the pulley, /, and band, ft, to drive the rotary fans of the blower, n. A 
supply-tube, t, leads from the reservoir to the blower-case, which it en- 
ters at the horizon of its axle. A cock, f, adjusted by the crank seen 
behind, regulates the outflow. The blower is so hung by the parts p, </, 
r, that its discharge-pipe, Fig. 7, n, may be thereby directed somewhat 
up or down or laterally. No new principle in the blower proper seems 
