Ice-Making Apparatus. Page: 5 of 7
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UNITED STATES PATENT OFFICE.
CHARLES B. LEE, OF GALVESTON, TEXAS.
IMPROVEMENT IN ICE-MAKING APPARATUS.
Specification forming part of Letters Patent No. 213,668, dated March 25, 1879; application filed
October 18, 1878.'o all whom it mayn concern:
Be it known thht I, CHARLES B. LEE, of
the city and county of Galveston and State of
Texas, have invented a new and Improved Ice-
Making Apparatus ; and I do hereby declare
that the following is a full, clear, and exact
description of the same, reference being had
to the accompanying drawings, forming part
of this specification, in which-
Figure 1 is a front elevation, with the cylin-
ders C G I in section. Fig. 2 is a side eleva-
tion, with the generator and condensers shown
in section. Fig. 3 is a side elevation fromthe
opposite side, with the cylinder G' and the ab-
sorber shown in section. Fig. 4 is a top or
plan view. Fig. 5 is an enlarged sectional de-
tail of the sprinkling device in the top of the
absorber.
My invention relates to certain improve-
ments in that class of ice-making apparatus
in which the vapor of ammonia or other simi-
lar volatile fluid is driven off from its solu-
tion by heat, is next condensed by being passed
through cooling pipes, and is then evaporated
and expanded through pipes to produce the
coldrequired forthe freezing, the gas beingsub-
sequently recombined in an absorber with the
poor liquid from which it was expelled in the
heater or generator.
The improvement consists, first, in the ar-
rangement between the generator and the
condensers proper of a peculiar form of inter-
mediate condenser, located upon the top of the
generator, and designed to better separate aiid
throw down into the generator again any
steam or aqueous vapor which might other-
wise pass over with the pure liquid ammonia
and involve trouble; secondly, in the peculiar
construction and arrangement of a trap-cham-
ber designed to prevent the ammoniacal liquor
from boiling over and passing into the con-
densers, which would involve the same objec-
tionable results; and, thirdly, in the peculiar
construction and arrangement of a device, lo-
cated between the absorber and generator, for
heating the concentrated liquor as it comes
from the absorber before it is admitted to
the generator proper, all as hereinafter more
fully described.
In the drawings, A represents the generator,in which generator the pure ammoniacal gas
is driven off from its mother-liquor by heat.
B is the intermediate condenser; C, the trap-
cylinder; D, the condenser proper; E, the re-
ceiver for the pure liquefied gas; F, the con-
gealing-box, in which the liquefied gas is ex-
panded through pipes to freeze the water into
ice; G, cooling-cylinders, for reducing the
temperature of the hot mother-liquor taken
from the generator.before it is admitted to
contact with the gas from the congealer, and
H the absorber in which the gas from the con-
gealer is reabsorbed by the mother-liquor
taken from the cooling-cylinders connecting
with the generator.
In the several parts of the apparatus thus
named the gas and mother-liquor continuously
circulate, the pure gas being driven off by
heat from the generator A, and then passing
through B and C to the condensers, where it
is liquefied by being passed through pipe sur-
rounded by a current of cold water. The
liquefied gas then enters the receiver E and
passes thence into the congealer, where it does
the work of freezing. Meanwhile the hot and
poor liquor from the generatoris taken through
the cooling-cylinders G and carried thence to
the top of the absorber , in which it absorbs
the pure gas that comes from the congealer,
and forms a liquid ready to be used over again
in the generator.
The generator A (see Fig. 2) is provided
with a fire-box and grate, a, an annular smoke-
chamber, a', a smoke-pipe, a, and a receptacle,
a3, for the ammoniacal liquor, in which is ar-
ranged upon a central support a series of bori-
zontal perforated plates, a4, upon which the
liquor drops as it enters through pipe a5, the
retardation and dripping of the liquor through
the perforated plates serving to permit the
gas to be more readily disengaged by heat
from the mother-liquor in which it is absorbed.
As the gas passes off at the top of the gen-
erator it traverses, before entering the con-
denser proper, the intermediate condenser B
and trap-cylinder C. The function of the in-
termediate condenser is as follows: With this
type of ice-machine too great a heat in the
generator will sometimes cause steam or aque-
ous vapor to pass over with the gas, and this
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Lee, Charles B. Ice-Making Apparatus., patent, March 25, 1879; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth169823/m1/5/: accessed June 24, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.