An Improved Device for the Preservation and Transport of Goods at a Low Temperature.
Year: 1898

page_text: Date of Application, 7th Sept., 1898
Complete Specification Left, 7th July, 1899-Accepted, 12th Aug., 1899
PROVISIONAL SPECIFICATION.
An Improved Device for the Preservation and Transport of Goods
at a Low Temperature.
I, DENIS BRUN, of 8, Horse and Dolphin Yard, Macclesfield Street, Shaftesbury
Avenue, London, W.C., Engineer, do hereby declare the nature of this invention to
be as follows:-
:-
This invention relates to a device for the preservation and transport of goods at a
low temperature.
It is well known that since the consumption of ices, sorbets, and iced confectionery
has become general, the only method of transport and preservation of such comestibles
in their cold state, used up to the present time, consists in enclosing them in vessels
which must be constantly surrounded with quantities of ice and salts so as to form a
refrigerating mixture which however only has the property of retaining for four or five
hours only the frozen contents of the vessel in their original form and substance, and
that after that time, it becomes necessary to change again and again the mixture of
ice and salts in which the recipient containing the ices, sorbets, and the like is
plunged.
This invention consists in the special construction of a vessel for carrying out the
above object, and is designed to supersede all the devices used up to the present. By
its means all sorts of ices, sorbets, iced confectionery, and the like may be transported
and preserved in a perfect state over long distances either by sea or land and during
several days. My invention will admit of portions of the contents being removed
from the recipient, the remainder being left from day to day according to the require-
ments of the consumer. The device may of course be used for the transport of all
other materials which it may be necessary to keep in a cold state.
To carry out my invention I form a transportable case for the carriage and preser-
vation of iced goods over long periods, having three or more separate compartments
each having hermetically closable orifices one compartment is designed to contain the
object to be preserved, around this latter a second is arranged to contain a cooling
medium of great thermal capacity and around both a third or more compartments are
arranged which contain an insulating substance, such as wool or other equivalent
material.
A very useful form for this device is that of a cylindrical chamber in the centre,
around which is arranged an annular chamber for containing the cooling medium, and
around this second chamber is arranged another annular chamber for containing the
insulating medium. The lower end of the innermost chamber is also protected by the
other two chambers extending over it.
The upper end of the innermost chamber is closed by a jacketed lid having
chambers for the reception of the refrigerating and insulating medium, so that the

page_text: innermost chamber is wholly isolated from the atmosphere and is wholly surrounded
by a cooling medium.
Dated this 7th day of September 1898.
FELL & JAMES,
1, Queen Victoria Street, London, E.C., Agent for the Applicant.
An Improved Device for the Preservation and Transport of Goods
at a Low Temperature.
I, DENIS BRUN, of 8, Horse and Dolphin Yard, Macclesfield Street, Shaftesbury
Avenue, London, W.C., 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 :-
This invention relates to a device for the preservation and transport of goods at a
low temperature.
It is well known that since the consumption of ices, sorbets, and iced confectionery
has become general, the only method of transport and preservation of such comestibles
in their cold state used up to the present time, consists in enclosing them in vessels
which must be constantly surrounded with quantities of ice and salts so as to form a
refrigerating mixture which however only has the property of retaining for four or
five hours only the frozen contents of the vessel in their original form and substance,
and that after that time, it becomes necessary to change again and again the mixture
of ice and salts in which the recipient containing the ices, sorbets, and the like is
plunged.
This invention consists in the special construction of a vessel for carrying out
the above object, and is designed to supersede all the devices used up to the
present.
By its means all sorts of ices, sorbets, iced confectionery and the like may be
transported and preserved in a perfect state over long distances either by sea or land
and during several days. My invention will admit of portions of the contents being
removed from the recipient, the remainder being left from day to day according to
the requirements of the consumer. The device may of course be used for the
transport of all other materials which it may be necessary to keep in a cold
state.
To carry out my invention I form a transportable case for the carriage and
preservation of iced goods over long periods, having three or more separate com-
partments each having hermetically closable orifices one compartment is designed to
contain the object to be preserved around this latter a second is arranged to contain a
cooling medium of great thermal capacity and around both a third or
compartments are arranged which contain an insulating substance such as wool or
other equivalent material.
more
A very useful form for this device is that of a cylindrical chamber in the centre,
around which is arranged an annular chamber for containing the cooling medium, and
around this second chamber is arranged another annular chamber for containing the
insulating medium. The lower end of the innermost chamber is also protected by
the other two chambers extending over it.
The upper end of the. innermost chamber is closed by a jacketed lid having
chambers for the reception of the refrigerating and insulating medium so that the
innermost chamber is wholly isolated from the atmosphere and is wholly surrounded
by a cooling medium.
4
4

page_text: order that this invention may be better understood I now proceed to
describe the same with reference to the drawings annexed hereto and to the letters
and figures marked thereon.
Figure 1 is a sectional elevation of one form of my portable refrigerating case, and
Figure 2 is a plan thereof.
Figure 3 is a detail of screw cap and lock up safety valve.
Figure 4 is a sectional elevation of a modified form of my portable refrigerating
device.
Figure 5 is a plan thereof, and
Figure 6 a sectional elevation of the lid.
Like letters refer to similar parts in the various figures.
To carry out my invention I form my transportable case for the carriage and
preservation of frozen goods in any convenient external shape, either cylindrical,
rectangular, or oval, but in all instances consisting of at least three, but if desired of
more, separate compartments, one inside the other and all hermetically closed from
one another.
low
The interior compartment A contains the goods a to be preserved at
temperature, and is closed by a removable lid B packed with heat non-conducting
material : the next enveloping compartment C contains a liquid cooling
medium c c at an extremely low temperature and of great thermal capacity, and the
external enveloping compartment D or compartments (as these may be duplicated
or multiplied as desired) contain a material or materials d resisting the radiation or
passage of heat from the external atmosphere inwards, such as wool, slag wool, felt or
the like.
The intermediate compartment C is accessible for removal or recharge of the
refrigerating liquid medium by a pipe E closed by a screw cap which is covered by
the external lid or cover F of the outermost case so that it shall not be tampered with
in transit.
In view of any irresistible expansion or discharge of vapour at pressure from the
cooling liquid cc in the compartment C, the said compartment is provided with a
lock-up spring-pressed safety valve G (Figure 3) which would allow issue of excess
pressure into the wool or felt of the external compartment or compartments D D,
where it would be absorbed, and a few external drilled holes H H, in the external
case would prevent accumulation of pressure therein.
Handles K K are provided on my device to facilitate its handling, or the box or
case may be mounted on wheels for that purpose.
In Figures and 2 the outer case D is shown square, but may be of any shape and
has a removable cover F, with an inner hermetically closed chamber C, adapted to
receive a charge of liquid at an extremely low temperature through the screw cap E,
which can be removed for that purpose, and is then screwed down home; the outer
case D, and the upper part of the intermediate chamber C is then packed with heat
non-conducting substance d, such as wool or felt, covering the screw cap E; and the
whole is closed with the cover F. The interior receptacle A for the storage of goods a
to be transported in a frozen state is then inserted and packed, and covered by the
lagged cover B, the whole being then ready for transport.
In Figures 4, 5 and 6 the form of the receptacle is shown oval, the inner receptacle A
forms the inner shell of the intermediate chamber C and is attached thereto and the
whole is closed by a combined cover B¹ lagged where it covers the inner receptacle.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed, I am aware that it has
been proposed to construct portable refrigerators in which the receptacle for the perish-
able goods is surrounded by refrigerating materials contained in a space between the said
receptacle,und a surrounding wooden or like box which may or may not be lined with
non-conducting material; I do not claim such construction generally but I declare that
what I claim is :

page_text: 1st. A portable refrigerating case adapted to employ a liquid cooling medium,
carried liquid tight within a casing, enveloping a central chamber, for the preserva-
tion of ices or other goods, the said liquid-containing casing being protected from
external heat by an enclosing lagging of a non-heat-conducting substance, the whole
being contained in a closed box having a handle or handles or other means to render
the same portable, substantially as described.
2nd. In a portable refrigerating case, a closed chamber therein enveloping an inner
cavity for the reception of goods to be maintained at a freezing temperature, a nipple
adapted thereto as sole ingress or egress of a liquid, a cap to said nipple hermetically
closing the chamber when filled with liquid, and a spring pressed safety valve and
enclosing cover thereover having holes for the escape of accumulated gas
at pressure
substantially as described.
CAL Ja of T..1., 1000
FELL & JAMES,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.