of bronze, bolted to a bracket on the frame, and cast in a piece, with
the suction valve chamber, P, in which the valve, p, plays. It is
surmounted by the distributing valve chamber P². This latter is held
by means of two nuts screwed on to the extremity of the rods, p³,
connected with the shell, E, of the distributing-cock, E. In the shell,
E, terminates, on one side, the pipe, p, through which enters the gas
from the washer, and, on the other, the pipe i, that communicates with
a feed-reservoir not shown in the cuts. The cock E, permits of the
simultaneous regulation of the entrance of the gas and water. Its
position is shown by an index e, passing over a graduated dial, _e¹_.
From the distributing valve chamber, P² the pipe, s, leads the
mixture of water and gas under pressure into

_The Saturator_, S (Figs 1, 7 and 9)--This consists of a large copper
vessel, s, affixed to the top of the frame through the intermedium of
a bronze collar h, and a self closing bottom H. This latter is
provided with two pipes, one of which, s, leads the mixture of water
and carbonic acid forced by the pump, and the other, b, communicates
with the siphons or bottles to be filled. The pipe, b, is not affixed
directly to the bottom, but is connected therewith through the
intermedium of a cock, r. The object of the broken form of this pipe
is to cause the pressure to act according to the axis of the screw, r,
which is maneuvered by the key, r².

The water under pressure, having been forced into the vessel, S, is
submitted therein to an agitation that allows it to dissolve a larger
quantity of gas. Such agitation is produced by two pairs of paddles, J
J, mounted at the extremity of an axle actuated by the wheel, A, through
the intermedium of gearings, g and g.