1).
[Illustration: VINCENTS ICE MACHINE. FIG. 9.--VIEW OF THE UNDERSIDE OF
THE SAME.]
The cold water requisite for condensation enters the tank, L, through
a pipe terminating in a pump or a reservoir. The waste water flows off
through the tubulure, Q. The tank is emptied, when necessary, through
the blow-off cock, S.
[Illustration: VINCENTS ICE MACHINE. FIG. 10.--PLAN OF THE WORM.]
_Operation of the Apparatus_.--As has been remarked above, the cylinder,
A, is filled with chloride of methyl. The pump, through suction,
produces in this cylinder a depression from which there results the
evaporation of a portion of the chloride of methyl, and consequently
a depression of temperature which is transmitted to the incongealable
liquid circulating in the tubes, and to the receptacles (carafes or
otherwise) containing the water to be converted into ice.
The pump sucks in the vapor of mythyl chloride through the pipe, H, and
through its suction valves, and forces it into the chamber, D, through
its delivery valves, and from thence into the worm, N, through the pipe,
J. Under the influence of compression and of the water contained in the
tank, L, the methyl chloride liquefies and falls into the receptacle, M,
from whence it returns to the freezer through the pipe, R.
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