Improvements in Apparatus for the Manufacture or Production of Ice.
Year: 1896

page_text: Date of Application, 19th Oct., 1896-Accepted, 21st Nav., 1996
COMPLETE SPECIFICATION.
Improvements in Apparatus for the Manufacture or Production
of Ice.
I, HANS HENRIK SCHOU, of Pilealle, 27, Copenhagen, in the Kingdom of Denmark,
Engineer, do hereby declare the nature of this invention and in what manner the same
is to be performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to apparatus for the manufacture or production of ice which
possesses several advantages over existing apparatus of which the following are the
most important, namely, a higher capacity, greater convenience in working and the
small space necessary for its installation.
In the accompanying drawing Figure 1 is a vertical section of apparatus constructed
according to my invention, and
Figure 2 is a view half in plan and half in horizontal section.
My apparatus consists of a vessel a made of plates of iron or other suitable material,
lagged with a heat-insulating substance.
This vessel is filled with a solution of salt, chloride of calcium or similar substance
possessing a sufficiently low freezing-point. In the vessel a is arranged a coil of
pipe b in which ammonia, carbonic acid, sulphurous acid, or other substance such
as is generally used in cooling apparatus, is evaporated in order to cool the surrounding
liquid.
The ice is made in cells c which are filled with water and let down into the cold
liquid in the vessel a. These cells, which are made of thin sheet metal are suspended
from a perforated plate d, mounted on a vertical shaft e in such a manner, that it
can either revolve with or around the same.
The vessel a is provided with a cover f, made of, or lagged with, a heat-insulating
material such as wood. The cover f is provided with one or several trap-doors g
through which the cells can be withdrawn from or placed in the vessel a.
By arranging the cells on a movable plate, which arrangement constitutes the
principal novelty of the invention, several important advantages are secured.
Experience has shown that, in order to obtain the greatest effect from the cooling-
agent, the liquid in the vessel a must move, not only round the coil d but also
round the walls of the ice-cells. To obtain such movement in ice-making apparatus
as used hitherto, and in which the cells do not move, a special agitator is necessary.
There is an objection to this, however, inasmuch as that the movement of the liquid
is more or less limited and that some portions of the liquid are more agitated than
others, the result of which is that some parts of the coil and cells are less cooled than
others.
By arranging the cells in such a manner that they move together with the whole
mass of liquid in the vessel a the cooling effect is not only increased, but it is also
uniform and regular for all the cells.
Besides saving the expenses in connection with a special agitator the space,
which such special agitator occupies is also saved, which in many cases is of great
importance.
In the installation of an ice-making apparatus existing conditions of space have
often to be considered. When, for instance, the apparatus has to be placed against
a wall or in a corner of a building the taking out and replacing of the cells, when
these cannot be moved round, is very inconvenient, except as regards those that are in
the immediate neighbourhood of the accessible side of the apparatus.

page_text: My arrangement obviates this inconvenience, as by turning the plate, to which
the cells are suspended, each cell, one after the other can be brought underneath the
trap-door g and taken out or replaced with the greatest ease. Another advantage
arising from this arrangement is, that the cover need not be removed whereby loss
of cold is avoided.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In apparatus for the manufacture or production of ice wherein the freezing
of the liquid is effected by placing cells in a cooling liquid, the arrangement of a
movable plate on a vertical shaft, from which plate the cells are suspended, by
which arrangement the use of a special agitator is dispensed with and at the same
time the working effect of the apparatus is increased and the removal of the cells
from, and their re-introduction into, the cooling liquid are facilitated, substantially
as set forth.
2. The manufacture and use of the improved apparatus for the production of
ice substantially as hereinbefore described and illustrated in the accompanying
drawing.
Dated this 19th day of October 1896
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.