Improvements in and connected with Apparatus for Preserving Animal and Vegetable Food and other Substances.
Year: 1894

page_text: Date of Application, 13th July, 1894
Complete Specification Left, 13th May, 1895-Accepted, 15th June, 1895
PROVISIONAL SPECIFICATION.
Improvements in and connected with Apparatus for Preserving
Animal and Vegetable Food and other Substances.
We, THOMAS HENRY LEE BAKE of 7 Coburg Place, Bayswater, Gentleman
and HENRY ALFRED LEVERETT of 16 Tokenhouse Yard, in the City of
Loudon, Engineer, do hereby declare the nature of this invention to be as
follows:-
Apparatus constructed according to this invention is especially applicable for
preserving alimentary substances during long voyages such as on board ship. The
apparatus consists essentially of a tank with water lute all round the sides, and
a lid with rim adapted to dip into the water lute. The tank is provided with
an outlet tap, plug or valve for water and the lid with an inlet tap or valve
for gas.
To use the apparatus for instance for preserving the flesh of animals during a
long journey we first rinse the tank with water containing a little salicylic or
boracic acid or other suitable antiseptic and place the flesh wrapped in coarse cloth
into the tank which is run quite full of acidulated water. The lid by preference
flat and with a recessed middle part is then put on, its rim forming an airtight joint
by means of the water lute. Nitrogen gas or other suitable inert gas stored at a
low pressure in a gasholder and made in any suitable or well known manner is
then admitted to the tank by the valve on the lid and a pipe or hose connected to
the gasholder, the water in the tank being at the same time allowed to escape by
the outlet valve and a pipe by preference terminating under water in another tank
at a lower level. As fast as the water runs out the gas takes its place; any air
contained in the tank or water is thus expelled and the packages in the interior of
the tank are enclosed in an atmosphere of the gas. The two valves being then
closed, the pipes disconnected, and the valve shanks plugged up or sealed, the tank
is ready for shipment.
The tank is by preference made with a removable perforated false bottom, and
some water may be left in the shallow space beneath it. If the lute is on the
outside of the tank the water outlet valve could be under the projecting lute
part so as not to be in the way. Or this valve and also the valve on the lid
may be in the recessed part or in a chambered out part so as not to project.
To prevent any evaporation of the water in the lute we may provide a packing.
By means of this invention the articles to be preserved are protected from the
influence of the air, leakages are prevented, supervision or any manipulation
during transport is rendered needless, and the tanks when removed from the ship
and their contents taken out may especially if made of galvanized iron be utilized
for taking packages or goods for the return journey.
Dated this 13th day of Jul., 1904
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.

page_text: Improvements in and connected with Apparatus for Preserving
Animal and Vegetable Food and other Substances.
We, THOMAS HENRY LEE BAKE of 7 Coburg Place Bayswater Gentleman:
and HENRY ALFRED LEVERETT of 16 Tokenhouse Yard in the City of London
Engineer de 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 :-
=-
Apparatus constructed according to this invention is applicable for preserving
alimentary and other substances during transport, over land and sea and for
domestic use. The apparatus consists essentially of a tank or vessel with a lid
provided with rim adapted to dip into a water lute on the tank. In case of large
tanks or other containers the lid need only be of a size large enough for con-
veniently gaining access to the interior and the lute will be of a corresponding size.
The tank or vessel is provided with an outlet tap, plug, or valve for water, and the
lid or upper end of the vessel with an inlet tap or valve for the admission of
nitrogen gas or other suitable gas which is inert relatively to the contents of the
vessel. This gas may be supplied through a reducing valve from a cylinder
charged with it at a high pressure or from a gasholder charged with it at a low
pressure.
Fig. 1 shews in vertical section a tank or safe for storing food or other substance.
The sides A of the tank are formed with a deep pocket B all round the upper part
and the lid C is provided with a rim D adapted to dip into the water in the
pocket B thus forming a lute. The lid has also by preference an outer rim E
between which and the sides A we provide a packing which may be a rolling cord
ring F of rubber, blandite or other suitable substance for preventing evaporation of
the water in the lute pocket. The tank should in plan have rounded corners so
that the ring F may not be cut at these places. G is a cock or valve for admitting
the inert gas and a cock or valve for emitting the water as shall presently be
described. I is a loose perforated false bottom or grid. Shelves K may be
provided loose or fixed in the tank.
Fig. 2 shews a tank with hinged lid C. the hinge pins E¹ working in slots or
forks B¹ the lute is in this case as an example shewn within the tank.
Fig. 3 shews the lid C applied to a large tank. The gas inlet valve G may
then suitably be on the lid and the water outlet valve would be in the lower part
of the tank. The tank may form part of a ship's hold. The lid may as shewn
be in a recess so that the valve G does not project above the level of the top of
the tank.
To use the apparatus say for the storing and preserving the flesh of animals we
first rinse the tank with water containing a little salicylic or boracic acid or other
suitable antiseptic, and place the flesh wrapped in coarse cloth into the tank which
is run quite full of acidulated water. The lid C is then put on, its rim D forming
an airtight joint by means of the water lute; the rubber ring F being then rolled
up into its place as shewn, the evaporation of the water in the pocket is largely or
wholly prevented. The nitrogen gas is then admitted by the valve G under a
pressure sufficient to drive out the acidulated water when the valve H is opened.
As fast as the water runs out the gas takes its place; any air contained in the
tank or water is thus expelled and the package or packages in the tank thus
become quite enclosed in an atmosphere of the gas. A little of the acidulated
water may be left below the false bottom I. The valves G and H being then
closed, the pipes, by preference flexible, disconnected and the valve shanks it may
be plugged or sealed, the flesh or other substance in the tank will be preserved

page_text: fresh a long time. Or the flesh may simply be wrapped in cloths which have been
previously dipped in acidulated water and then placed in the tank or safe into
which the nitrogen is introducd so as to drive the air out. Fish, shell fish, fruit
and vegetables may be kept fresh during a long voyage on board ship or on shore
if placed in tanks or safes which are then charged with the nitrogen and is
available for use at any time superseding the use of ice safes or costly and
bulky apparatus for freezing or cooling. The cylinder containing the compressed
gas would be placed near the tank or safe and be connected thereto by a pipe and
valve. By means of these apparatus the articles to be preserved are protected
therein from the influence of the air, leakages are prevented, supervision or any
manipulation of the articles stored is rendered needless and the articles are easily
taken out of the vessels when required for use. When such a vessel is closed again
it is charged with nitrogen so as to drive out the air, and the remainder of the
articles enclosed will thus be preserved.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. Apparatus for storing and preserving alimentary and other substances in an
atmosphere of nitrogen or other suitable inert gas consisting of a tank or vessel
provided with a lid with water lute and packing for preventing evaporation of the
water in the lute and means for admitting the nitrogen under pressure and for
outlet of water or air by the force of the gas substantially as and for the purpose
set forth.
2. The constructions of storing and preserving vessel described with reference to
the accompanying drawings.
Dated this 13th day of May 1895.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.