BUCKET AND KNAPSACK PUMrS. 27 f 



and firos, but in barrel and tank pumping or wherever greater force is 

 commendable a levered force-pump will generally be preferred, and such 

 will be described further on. 



In Ko. 150836, on May 12, 1878, Mr. R. T. Deakin, formerly of Shef- 

 field, Euglcind, but now of Philadelphia, Pa., patented his so-called ^''Ex- 

 celsior Fump and portable Fire extinguisher," which has a flange-shaped 

 foot- piece and combines in itself the characteristics of the double-acting 

 "Aquapults" and "Aquajects." This pump works well and will rank 

 with those above described. 



Here may be appended a notice of the so-called '^EydropuU^'^^ of which 

 Mr. W. T. Yose, of Newton ville, Mass., is the patentee and manufact- 

 urer. His letters patent date November 15, 1868, and extension No- 

 vember 15, 1878. This pump is represented in Plate XL, Fig. 4. The 

 two cylinders, Ic 1c, are continuous by the U -coupling mounted on the 

 large stirrui)- shaped foot-piece, p. A pair of pistons joined above 

 with each other and with the single handle, m, work up and down to- 

 gether and simultaneously in the cylinders. The suction-hose, /?, from 

 a bucket or other receptacle, communicates, at ?, with one cylinder, while 

 the other cylinder has an air-chambered discharge, ae, near its top. 

 The operation is as follows : The upward stroke causes the water to 

 pass through the first piston-head and fill the U coupling and both cyl- 

 inders. The downward stroke discharges about all of this up through 

 the second piston and ejects half of it from the spout. The second up- 

 ward stroke ejects the other half or the contents of the second cylinder 

 while both cylinders are simultaneously filled by tbe suction. Thus the 

 entire contents of one cylinder is thrown out at each stroke, while the 

 upward stroke also sucks: both cylinders full. This device is more com- 

 plex than the pumx)S noticed above and suffers more friction while it 

 does not work as easy as the others, yet it is a reliable pump capable 

 of such uses as the '' Aqutijects" are adapted for. 



Bucket-pumps and knapsack pumps (Plates XLI and LV). — Be- 

 sides the "Bucket-pumps'' and *' Knapsack-pumps " already noticed, 

 numerous others are made for extinguishing fires, sprinkling plants, 

 etc., but in general they are such as have little value in the treatment 

 of field crops. Yet in this connection it seems desirable to call special 

 attention to the following examples : 



Plate XLI, Fig. 3, illustrates the three forms of '-'• Lewis's Gomhijiatioii 

 Force Fump^^ as manufactured by Mr. P. C. Lewis, of Catskill, N. V^., 

 under his patent. No. 230639, August 3, 1880. It is a syringe of large 

 size, having a double-cupi:)ed rubber piston-head and three substitutive 

 discharge attachments. In the one case the solid jet nose-piece or in- 

 jector-spout is screwed on. In its stead a rose-head face may be used, 

 making of it a spray-syringe, his '^ Potato Bug Exterminator." Thirdly, 

 an end-piece having a suction hose, suction valve, and a side discharge 

 spout may be attached, thus producing a simple single-acting force- 

 pump. The discharge spout, as shown in the figure, has a short hose- 



