Improvements in or relating to Machines or Apparatus for the Manufacture of Artificial Ice.
Year: 1899

page_text: Date of Application, 11th May, 18-9- Accepted, 8th July, 1899
COMPLETE SPECIFICATION.
Improvements in or relating to Machines or Apparatus for the
Manufacture of Artificial Ice.
We, CHRISTIAN HEINRICH JACOB STOLDT, of 64, Wilhelminen Street, St. Pauli,
Hamburg, Gentleman, and FREDERICK LOUIS WEAVER, of Los Angeles,
California, U.S.A., Engineer, do hereby declare the nature of our said invention
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
This invention relates to an ice machine which has for its object to accelerate
and cheapen the manufacture of ice for large businesses such as breweries and
other similar undertakings. The cost of the machines in general use for making
ice on a large scale has been particularly high on account of the use of pumps
which had to be driven by special gear for the purpose of propelling the cooling
This constant expenditure
liquid through the serpentine pipes or coils.
of power and the necessary care
to
and attendance attached thereto caused
the expenses
be
pro-
very high and hence increased the cost of
duction of the ice. The object of this invention is to dispense with the
continuously driven pump by storing, during a short period of time, a source of
power and expending such power over a more prolonged extent of time; the
expenditure or utilization of the power thus stored being effected, automatically
and requiring no watching. This object is fulfilled in the most simple manner,
by subjecting the liquid placed in a suitable cylinder or vessel to a constant and
uniform pressure by means of a weighted piston which impels the liquid to run
in the manner required throughout the serpentine pipe. The outlet of the latter
pipe is connected with a second cylinder or vessel the piston of which is not
weighted and is raised by the liquid until the first cylinder or vessel is thoroughly
emptied. Then the weighting of the pistons is reversed; this is effected auto-
matically or by mechanical means, and the cooling liquid runs now under the
same pressure from the second vessel back through the serpentine pipe, whereupon
the piston of the first vessel which is not now weighted is raised. Two or more
sets of vessels as described may be used to act in combination.
In the accompanying drawings, the invention is illustrated in the form of a
diagram.
The cylinder a, in which the weighted piston 6 moves, is connected to the
serpentine pipe by means of a suitable pipe connection so that the cooling liquid
can pass through the said serpentine pipe or coil always in the same direction;
the cylinder a is therefore connected by means of the pipes c¹ and ², with the
two ends of the serpentine pipe respectively.
In the same manner the cylinder a with the piston 6', is connected by means
of the pipes and with the serpentine pipe c, the pipes c3 and * being like-
wise alternately communicating with the inside of the cylinder a¹ by a three-
way cock d¹.
The mechanism operates in the following manner:- -Assuming that the
cylinder a be filled with cooling liquid and that its piston be loaded in any suit-

page_text: able manner by a suitable weight e. The two three-way cocks d and are so
adjusted that the cooling liquid is forced out of the cylinder a through the
serpentine pipe cand the pipe into the cylinder a¹, whereupon the piston b
is gradually raised in the latter cylinder until it has reached the highest position
possible, while the cylinder a is emptied. At this moment the two three-way
cocks and are so turned or geared that the cooling liquid is allowed to run
out of the cylinder a through the pipe the serpentine pipe c and the pipe ɑº
into the cylinder a the weight e having been transferred onto the piston b¹. The
manipulation or gearing of the three-way cocks may be effected automatically
by the sinking pistons. Likewise the transfer of the weight from one piston on
to the other may be effected by any suitable auxiliary contrivance, such as an
electric motor and the like.
The characteristic feature of this invention is that the power necessary for
working is stored and is gradually expended over a long period of time.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is;
-
1. In the manufacture of artificial ice, the method of propelling the cooling
liquid at an uniform pressure through the pipes and in a prolonged manner,
substantially as herein set forth.
2. In the manufacture of articifical ice, the application and use of two or more
sets of vessels fitted with pistons and one or more sets of weights so arranged and
connected with the circulating pipes that the cooling liquid is forced through the
surpentine pipes always in the same direction but from one vessel to the other
and vice versa substantially as set forth.
3. In the manufacture of articifical ice, the combination with the serpentine
circulating pipes of two or more sets of cylinders fitted with pistons and piston
rods, a weight or weights or equivalent means for causing the piston or pistons
to descend by gravity and thus exert an uniform pressure upon the cooling
liquid and the system of pipes, connections, and three-way cocks for causing the
liquid to circulate through the serpentine pipes always in the same direction,
substantially as set forth.
Dated 11th May 1899.
GEORGE DOWNING & SONS,
8, Quality Court, London, W.C., Agents for the Applicants.