AQUAPULT8, ETC. 
269 
single-acting liydronette a flexible cup-packing above an annular slip- 
head which strikes, into the cup to spread it at the force stroke. Mr. 
F. S. Shirley, of New Bedford, Mass., in patent No. 173349, February 
8, l ^TG, introduced in the single-acting liydronette a tubular air-cham- 
ber surrounding an inward projecting discharge-pipe (and which can 
only be of value when directed above the horizontal), a strainer in the 
piston-head, a piston and handle of one piece, and a cylinder and stuf- 
fing box of one piece. In No. 199380, January 22, 1878, Mr. W. F. Ray- 
mond, of Brooklyn, N. Y., introduced the double-acting discharge in 
combination with double-suction and the tubular air-chamber by using 
five valves and the third or outside cylinder already noticed. Mr. A. 
Hamilton, of New York City, patented, September 13, 1881 (Kb. 246880), 
a hand-pump differing from the best hydronettos chiefly in its combina- 
tion of a rose and solid jet nozzle with a shut-oft" cock and by the com- 
plex construction of the piston head and valve. 
Aquapults, Aquajects, Aquarius, Excelsior, and IIydro- 
pult. — (Plate XL.) Under these names are known small portable 
pumps which have a side discharge from tin 1 Upper cylinder-cap, 
while they aie worked by a T-handle on top of the piston. When in 
use these pumps are generally supported in a more or less vertieal posi- 
tion by the operator, and the cylinder is often held by some kind of at- 
tachment to the receptacle for the liquid or by a foot piece upon the 
ground or floor. Being thus planted the weight of* the body can be 
thrown on the piston during the downward stroke, but the upward 
stroke is more difficult. Some are double-acting, and most have an air- 
chamber upon the cylinder or in the piston. The market prices of these 
pumps range from $S to 810. The various kinds that have come to my 
attention merit the following notice: 
The former Cotton Worm Reports make no allusion to these pomps, 
yet there are several which seem to deserve consideration here. 
"The Johnson Force Pump" appears to be the earlier form of the "Aqua- 
pult." Mr. W. J. Johnson, of Newton, Mass., took out patents No. 30480, 
October L>3, 1800, No. 6049, September 21, 1875, and No. 110599, July 4, 
1671, relating to the following pumps : Plate X*L, Tig. 1, represents his 
pump in combination with a bucket for the liquid. The T-handle, is 
seen on to]) of the large piston-rod, jp, which is hollow and of half the 
size of the outside cylinder, l\ About mid way of the cylinder is clamped 
fast a bracket, ft, with claws that clinch firmly upon the edge of the 
bucket. The discharge takes place through a hose, /*, attached near the 
top and having a terminal nozzle, ft, of the kind described on page — , 
and in Plate XV, Fig. f>. The pump is double-acting, works easily, and 
is powerful in its action. It is manufactured by the National Manu- 
facturing Company, Boston, Mass. Other manufacturers and inventors 
have introduced modifications in some of its details. This form of 
pump as manufactured by Messrs. W. & B. Douglas and patented 
(No. 192Q79, July 10, 1877) by J. W. Douglas, all of Middletowu, Conn., 
