HYDRONETTES, ETC. 263 



half the inside capacity of the outside cylinder, have been made under 

 several patents, and some of these possess a high degree of excellence. 

 A well-pump having tubes of these relative proportions and side out- 

 lets from the piston to the upper chamber of the (cylinder, was i)atented 

 by Mr. J. M. May (in Xo. 25207) on August 23, 1850, as •' a double-acting 

 pump." These features were after wards embodied in the better, portable 

 hand-pumps of the group we novv^ are to consider more specially. The 

 single-acting ones, having tubes with or without the proportions named, 

 are less desirable on account of their discharge being intermittent, and 

 they ai)pear related to those syringes which have a hollow-piston dis- 

 charge. Such a syringe, for example, was imtented (Xo. 89362) on Ax)ril 

 27, 1869, by Mr. H. Tyler, of Gaines, ]S". Y. The discharge is through 

 a piston-tube terminating in a rose-head directed to one side, and the 

 whole is mounted on a pair of slide-bars^ by which it can be operated 

 f(.r applying i^oison in or above trees. 



Mr. W. Servant, of Providence, E. I., patented (No. 107633) on Sep- 

 tember 20, 1870, a '' sprinkler," shown in Plate XLIY, Fig. 1. It con- 

 sists of a portable pump cylinder, i/, having a tubular, discharging piston, 

 p, working telescopically in it, all provided with suitable packings, 

 valves, a flexible or jointed suction-tube or hose, A, and with inter- 

 changable solid jet, s, and rose-nozzles, r. Ball- valves were preferably 

 used as 1 he base- valves of the cylinder and piston. In the figure c is the 

 strainer- entrance to the suction-hose, h, which is coupled to the base of 

 the cylinder, y, in which glides the tubular piston, j>, bearing a handle, 

 m, and substitutive solid-jet nozzle, s, and spray-rose, r. The nozzle 

 out of use is carried on a nib as at r. Drawing out the piston rarifies 

 the cylinder chamber, which atmospheric pressure fills with water to be 

 discharged by the return stroke. Thus the pump shown throws an in- 

 termittent jet, it being only single-acting. But Mr. Servant, in his let- 

 ters patent, says : '^ I do not intend to limit the afore-described arrange- 

 ments to a single-actiug pump, as they are equally applicable to a double- 

 action pump." The general form of construction of this pump is essen- 

 tially the same as that patented {So. 55022) May 22, 1866, by Mr. E. L. 

 Staples, of Xash\'ille, Tenn., but the latter is for Insertion as a deep- 

 well '' lift-pump," while Mr. Servant seems to have first produced it in 

 portable size with the handle upon its piston-ttibe and with the flexible 

 suction-pipe having a strainer by which it can take a supply from any 

 other pipe or from any kind of receptacle. Thereby it became a valu. 

 able pump of most general application, and has been largely manufact- 

 ured in both single-acting and double-acting styles, with modifications 

 covered by more or less subordinate patents on variations in some of 

 its special details. 



Under this patent and under others by J. A. Whitman, also of Provi. 

 deuce, bearing date of September 20, 1870, January 8, 1878 (Xo. 199131), 

 and November 1, 18S1 (No. 248902), this pump has been manufactured 

 for the trade as " The Fountain Pump'''' and " Whitman's Fountain Pmnp.^^ 



