IMPROVEMENTS IN REFRIGERATORS OR " COOLING SAFES FOR FOOD AND DRINK
Year: 1882

page_text: LETTERS PATENT to Peter Jensen of 33 Chancery Lane in the County of
Middlesex for an Invention of "IMPROVEMENTS IN REFRIGERATORS OR
"
COOLING SAFES FOR FOOD AND DRINK Communicated to him from abroad
by Carl Klein of Görlitz German Empire
PROVISIONAL SPECIFICATION left by the said Peter Jensen at the Office
of the Commissioners of Patents on the 3rd October 1882.
PETER JENSEN of 33 Chancery Lane in the County of Middlesex
MENTS IN REFRIGERATORS OR COOLING SAFES FOR FOOD AND DRINK
"
munication to me from abroad by Carl Klein of Görlitz German Empire)
"IMPROVE-
(A Com-
Refrigerators or safes constructed according to this invention are for keeping
food or drink contained therein, cool. As compared with other inventions for the
purpose these novel apparatus which use water as the cooling medium have the
advantage that the water before use in the apparatus may be applied to other
domestic uses, so that no expense is involved except the first cost of the safe
whereas the safes cooled by ice involve a daily and not inconsiderable expenditure
for the ice. The apparatus may also be placed in the kitchen itself if desired and
the food and drink to be preserved need thus not be placed in any cellar; in spite
of the heat in the kitchen the temperature in it is so low that all food placed
therein is preserved.
The refrigerator or safe consists mainly of a double walled box made of sheet
zinc for instance in the form of a rectangular or parallelopipedon shaped box a
space being provided between the inner and the outer walls being for the water
circulation; there are studs for holding the walls the proper distance apart and
for stiffening them.
There is a pipe supplied from the house cistern or other source which pipe enters
into the lower water space in the middle so as to distribute the water as evenly as
possible for circulation and thus cool the interior of the safe. The exit pipe is
connected to the middle of the upper water space and is fitted with a cock and is
carried off to some convenient part of the kitchen or to a sink or drain; by
Di J1 -

page_text: opening the cock the circulation is established, the fresh or cool water entering
from below and leaving at the top in a somewhat warmed condition.
In order to clean out any sand or deposit in the water spaces or jackets, there is
provided a blow off pipe with cock at the bottom of the safe.
Such a water jacketted safe may conveniently if desired be placed in an outer
casing or box fitted with a door which closes upon India rubber fillets or packing
strips on the interior part or safe proper so as to close the interior of the apparatus
against the outer warm air; or the air space provided between the safe proper and
the outer casing is by preference filled with a bad conductor of heat so as to keep
the temperature of the safe as independent of that of the outer atmosphere as
possible and also to concentrate the action of the cooling water upon the interior of
the safe.
The apparatus may also be made in cylindrical form, with two concentric sheet
metal cylinders having an intermediate annular space for water circulation and
closed below by a convex double bottom and closed above and kept the proper
distance apart by a pipe bent in a circle and provided with holes below and serving
as an outlet; the interior is closed by a top lid which is hollow and filled with
non-conducting material. By the inlet pipe which enters the bottom in the middle
and by reason of the outlet holes provided all round in the outlet pipe the inner
cylinder will be constantly cooled by evenly ascending currents of water the action
of which is concentrated on the interior of the safe by an outer covering of felt or
other suitable non-conducting material. Also in this case the bottom is provided
with blow off cocks for rinsing out the water space with water when required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Peter Jensen in the Great Seal Patent Office on the 3rd April
1883.
"
PETER JENSEN of 33 Chancery Lane in the County of Middlesex "IMPROVE-
MENTS IN REFRIGERATORS OR COOLING SAFES FOR FOOD AND DRINK (A communi-
cation to me from abroad by Carl Klein of Görlitz German Empire
Refrigerators or safes constru ed according to this invention are for keeping
food or drink contained therein ol. As compared with other inventions for the
purpose these novel apparatus aich use water as the cooling medium have the
advantage that the water used in the apparatus may be applied to other domestic
uses so that no expense is involved except the first cost of the safe whereas the
safes cooled by ice involve a daily and not inconsiderable expenditure for the ice.
The apparatus may also be placed in the kitchen itself if desired and the food a*..
drink to be preserved need thus not be placed in a collar; in spite of the heat
in the kitchen the temperature in it is so low that all food placed therein is
preserved.
Figure 1 is a front view of the safe with the door open. Figure 2 is a vertical
longitudinal section of same. Figure 3 is the double walled box made of sheet zinc.
Figures 4 and 5 show studs i, i, for keeping the walls apart from each other.
Figures 6, 7 and 8 show the safe in a cylindrical form.
The refrigerator or safe consists mainly of a double walled box made of sheet
zinc for instance in the form of a rectangular or parallelopipedon shaped box such
as shown at Figure 3 a space being provided between the inner and the outer
walls for the water circulation; there are studs such as i, i, figure 4 for holding the
walls the proper distance apart and for stiffening them.
There is as shown at c, Figure 2 and at g Figure 3 and at ƒ Figure 8 a pipe
supplied from the house cistern or other source which pipe enters into the lower
water space in the middle so as to distribute the water as evenly as possible for
circulation and thus cool the interior of the safe the exit pipe 6 Figure 2
Figure 3 and e Figure 8 is connected to the middle of the upper water space and
is fitted with a cock and is carried off to some convenient part of the kitchen or to
a sink or drain; by opening the cock the circulation is established the fresh or
cool water entering from below and leaving at the top in a somewhat warmer
condition.
In order to clean out any mud or deposit in the water spaces or jacket, there is
provided a blow off pipe k Figure 3 or Figure 8 with cock at the bottom of
the safe
Such a water jacketted safe of the form shown at Figures 1 and 2 may
conveniently if desired be placed in an outer casing or box fitted with a door
which closes upon india rubber fillets or packing strips a on the interior part or
safe proper so as to close the interior of the apparatus against the outer warm air
or the air space provided between the safe proper and the outer casing is by
preference filled with a bad conductor of heat so as to keep the temperature of
the safe as independent of that of the outer atmosphere as possible and also to
concentrate the action of the cooling water upon the interior of the safe.
The apparatus may also as stated and as shown at Figures 6, 7 and 8 be made
in cylindrical form, with two concentric sheet metal cylinders having an inter-
mediate annular space for water circulation and closed below by a convex double
bottom and closed above and kept the proper distance apart by a pipe bent in a
circle and provided with holes below and serving as an outlet; the interior is

page_text: closed by a top lid which is hollow and filled with nonconducting material. By
the inlet pipe which enters the bottom in the middle and by reason of the outlet
holes provided all round in the outlet pipe, the inner cylinder will be constantly
cooled by evenly ascending currents of water the action of which is concentrated
on the interior of the safe by an outer covering d of felt or other suitable non-
conducting material. Also in this case the bottom is provided with blow off
cocks for rinsing out the water space with water when required.
Having now described the nature of the said Invention and in what manner the
same is to be performed I declare that I claim as the Invention communicated
to me.
First: The application of the water used for household purposes to the cooling
of food and drinkables by passing the water before such household use through a
cooling apparatus connected to the water supply substantially as set forth.
Second: An apparatus for cooling food and drinks by means of the water to be
used for the house consisting of a double walled sheet metal box or cylinder, which
is connected to the water supply pipe in such a manner that the water enters at
the bottom, and when it has produced its cooling effect flows away at the top, and
then can be used all substantially as described and shown in the accompanying
drawings.
In witness whereof I the said Peter Jensen have hereunto set my hand and
seal this Second day of April in the year of our Lord One thousand eight
hundred and eighty three.