MANY-PUNCTURED NOZZLES. 
193 
would tend to dam up the small outlets. Such material, if kept in mo- 
tion, does not impair the spray. Some of the examples showing this 
principle in many-punctured nozzles, as discovered and applied by 
myself, are represented in Plate XIV. Figs. 1, 2, 3, and 4. 
In Plate XIV, Fig. 1, c and c indicate two can-screw caps, s the per- 
forated circumference, and a the spout which enters the chamber at a 
tangent at x. 
A section showing the interior of a similar nozzle, which has but one 
can-screw opening, appears in Fig. 2, in which a designates the eccen- 
tric spout, and i a rotary brush inside of the rotation chamber, where it 
is made to whirl by and with the water to wipe away clogging materi- 
als from the perforated periphery. Differently formed brushes or other 
bodies may be inserted on an axis or free, and one or more small, loose 
projectiles can be placed inside for the same purposes. 
When nozzles of this form are used on watering pots it is generally 
preferable to have the perforations on the outer rim. as shown, in order 
to throw a flat fan-shaped spray ; but a head may be made as in Plate 
XIV, Figs. 3 and 4, with a punctured face toward one side as a conven- 
ient form for spraying sidewise in a broadcast manner or vertically 
down or upwards. 
A sprinkler made on this plan, but with a Hat cap-plate or an inserted 
ping instead of the projecting screw-cap described, and with divergent 
or colliding jet*«, is the best many-punctured nozzle for dragging or car- 
rying beneath plants to squirt an upward spray; but better sprays for 
this purpose are made by nozzles of class 4. 
PLUG-ROSES. — These are certain nozzles which emit the sp ray through 
grooves cut in the surface of a plug or its surrounding wall. 
A rather curious nozzle of this class was used in the machine patented 
in 1S73 (Xos. 145571, and 145572) by Mr. Jehu W. Johnson, of Colum- 
bus, Tex.; and is illustrated in Plate XV, Fig. 4. 
A plug with parallel grooves as water passages along its outer sur- 
face, and fitted into a cup-like expanded end of a tube, is held in place 
and may be set out or in, to increase or diminish the spray, by an ad- 
justable thumb screw. The resultant spray is bell-shaped. 
Mr. J. C. Melcher, of Black Jack Springs, Texas, is making a nozzle in 
which a metallic grooved plug is used. The plug is a very flat cone, and 
its rim projects beyond the jet pipe enough to spread the spray quite 
wide. Inside of the pipe the apex of the cone has a projecting eye, 
through which a string is drawn with its ends passed out through the 
sides of the tube at points farther back, where the two ends are tied 
together to hold the cone in place. 
A somewhat similar irrigating nozzle containing a grooved plug for 
dividing water into a spray was patented in 1878 (So. 203733) by Mr. 
Samuel Dawson, of Hempstead, X. Y., and a more spirally-grooved plug 
for the same purpose and for giving a rotary motion to the spray was 
patented in 1879 (No. 220277) by Mr. F. X. Foster, of Buffalo, N. T. 
t>3 CONG 13 
