w system, the loss of pressure is _nil_, inasmuch as each
turbine becomes in reality an exhauster. The gas, entering the washer at
the axis, is drawn to the circumference by the rotatory motion of the
brooms, which thus form a ventilator. It follows, therefore, that on
leaving the vessel the gas will have a greater pressure than it had on
entering it; and this increase of pressure may be augmented to any
desired extent by altering the speed of rotation of the axis, precisely
as in the case of an exhauster.

Forcing the gas violently into water, and at the same time dividing the
current, is evidently the most simple, rational, and efficient method of
washing, especially when this operation is effected by brooms fixed on a
shaft and rotated with great speed. Therefore, if there had not been
this loss of pressure to deal with--a fatal consequence of every violent
operation--the question of perfect washing would probably have been
solved long ago. The invention which I have now submitted consists of an
arrangement which enables all loss of pressure to be avoided, inasmuch
as it furnishes the apparatus with the greatest number of valuable
qualities, whether regarded from the point of view of washing or that of
condensation.

[Illustration: Longitudinal Section. Elevation. Transverse Section.]

Referring to the illustration, the gas enters the washer by the pipe, A,
which terminates in the form of a [Symbol: inverted T]. One end (a) of
this pipe is bolted to the center of one of the sides of the cylindrical
portion of the case, in which there is a hole of similar diameter to the
pipe; the other (a') being formed by the face-plate of a stuffing-box,
B, through which passes the central shaft, C, supported by the
plummer-block, D, as shown. This shaft has upon its opposite end a plate
perforated with holes, E, which is fixed upon the flange of a horizontal
pipe, F. This pipe is closed at the other end by means of a plate, E',
furnished with a spindle, supported by a stuffing-box, B', and carrying
a fly-wheel, G. The central pipe, F, is perforated with a number of
small holes. The gas entering by the pipe, A, makes its way into the
central pipe through the openings in the plate, E, and passes into the
cylindrical case through the small holes in the central pipe, which
carries the brooms, H. These are caused to rotate rapidly by means of
the pulley, I; and thus a constant shower of water is projected into the
cylindrical case. W