Exhibited at Windsor. 
499 
double crank, with throws in opposite directions, placed above 
the road-wheels axle. One end of the crank works in a bearing 
attached to the inner side of the tank, the other end passes 
through the side and carries a jiinion which is put into gear by 
a clutch and lever, the hand end of which passes to the rear of 
the tank. The pinion is driven by a spur-wheel about four 
times its diameter, secured on to the road-wheels axle. 
The suction pipes of the pump are protected by finely-perfo- 
rated bottle-shaped strainers, and the pumps deliver into a small 
flat air-vessel secured to the outside of the rear of the tank. The 
air-vessel is fitted with a regulated relief valve, which discharges 
any surplus fluid back into the tank. On each side of the air- 
vessel are four half-inch taps, with loose valves which prevent 
backward flow, and four flexible rubber pipes which communi- 
cate with four sparging pipes arranged on the sides of the 
machine, and supported from the tank by brackets which allow 
of the levels of the three lower pipes to be altered, and also 
permit of lateral adjustment and turning round axially to any 
angle. The upper pipe on each side is carried about 6 inches 
above the tank, and the two converge somewhat towards its 
front. The end of one pipe is fitted with a cock communicating 
with a cross pipe ending in a blank cap. All these pipes have 
one row of pin-holes pitched from 2 ^ to 3 inches, and their ends 
are closed with brass caps, which can readily be removed for 
cleaning. The tank is fitted with a brass-capped emptying pipe. 
The shafts are attached to the tank in a peculiar way. At 
the upper part of the two front corners are strong brackets to 
which the shafts are fixed by means of vertical pins |-inch in 
diameter, fitted with loop upper ends and pointed lower ends, 
so that they can be easily withdrawn. When one pin is taken 
out the shafts can turn sideways on the other at right angles to 
the tank, the extent of motion being defined by a pair of short 
chains attached to the shafts and hitched on to a pair of hooks 
in the front of the tank. The shafts are tubular, and are strongly 
framed at their rear ends so as to support their weight during 
the lateral movement. At the rear of the tank is a pair of 
handles used for working the implement round at the end of 
the rows. The effect of this arrangement is that the machine 
i can be turned in very little space, without taking the horse out 
of the shafts, it is said, in the 6-foot headland between 6-foot 
1 rows. The draught appears rather much for one horse. Travel- 
ling at thi'ee miles an hour, the pumps would make about 112 
revolutions per minute and deliver about 38 gallons in the same 
j time, provided no fluid was returned by the relief valve to the 
I tank. It is obvious that any one of the sparging pipes can be 
