Improvements in or connected with "Refrigerating" Chambers for Preserving Meat, Poultry, and other Provisions.
Year: 1891

page_text: Date of Application, 16th July, 1891
Complete Specification Left, 16th Apr., 1892-Accepted, 21st May,
1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with "Refrigerating" Chambers for
Preserving Meat, Poultry, and other Provisions.
We, JOHN MCCANEY, of 11 William Street, Bedminster, in the City and County
of Bristol, Foreman at Ice Manufactory, and HUGH ADAM KERR, of 6 Wilton
Road, Dalston, in the County of Middlesex, Cashier, do hereby declare the nature
of this invention to be as follows:
This invention relates to cold or refrigerating chambers for the preservation of
meat, poultry and other provisions, and cousists in the following improvements in or
connected with such chambers:
According to this invention the low temperature necessary is obtained through
the employment of the following combination of means and apparatus. At one side
of the chamber which is, as usual, constructed with double walls with a packing of
Bawdust between the walls so as to be airtight, is situated a box or bin the walls
of which are of similar construction to those of the chamber. On a rack or open
shelf in the box or bin are placed blocks of ice. The rack or shelf is raised above
the lovel of the floor. A tray-preferably made of galvanized irou-is placed on
the floor and receives the water as the ice melts. From the tray the water is
conducted off by an escape pipe carried to the exterior through one of the side
walls of the ice box or bin.
Communication between the space below the ice shelf or rack aud the meat
chamber is established only by nozzles or spouts passed through one of the walls
of the ice box or bin and situated near the Hoor. These nozzles or spouts
are preferably conical, the smaller end being outwards, that is to say, extended into
the meat chamber.
The cold air in the ice box or bin issues therefrom through the nozzles or spouts
into the meat chamber.
"
In addition to the above described means for cooling, olosed vessels containing a
mixture of ice, coarse or "freezing salt, carbonate of soda, powdered alum and
boric acid are placed on shelves in the meat chamber. By these vessels thus
charged the temperature of the meat chamber is to a considerable extent governed
and the consumption of ice in the ice box or hin aforesaid may through their
instrumentality be regulated. In some cases it is preferred to agitate the air in the
chamber by means of a fan or other device.
Dated this 15th day of July 1891
NICHOLAS WATTS,
Bristol Bank Buildings, Bristol, Agent.
COMPLETE SPECIFICATION.
Improvements in or connected with "Refrigerating" Chambers for
Preserving Meat, Poultry, and other Provisions.
We, JOHN MCCANEY, of 11 William Street, Bedminster, in the City and County
of Bristol, Foreman at Ice Manufactory, and HUGH ADAM KERR, of 6 Wilton
Road, Dalston, in the County of Middlesex, Cashier, 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 cold or refrigerating chambers for the preservation of
meat, poultry and other provisions and consists in the following improvements.in or
connected with such chambers.
According to this invention the low temperature necessary is obtained through

page_text: the employment of the following combination of means and apparatus. At one
side of the chamber which is, as usual, constructed with double walls with a
packing of sawdust between the walls so as to be airtight, is situated a box or bin
on a rack or open shelf in which are placed blocks of ice. The rack or shelf is
raised above the level of the floor. A tray-preferably made of galvanized iron-
is placed on the floor and receives the water as the ice melts. From the tray the
water is conducted off by an escape pipe carried to the exterior through one of the
side walls of the ice box or bin. Communication between the space below the ice
shelf or rack and the meat chamber is established by means of nozzles or spouts
passed through one of the walls of the ice box or bin and situated near the Hoor.
These nozzles or spouts are preferably conical, the smaller end being outwards, that
is to say extended into the meat chamber.
The cold air in the ice box or bin issues therefrom through the nozzles or spouts
into the meat chamber.
In addition to the above described means for cooling, closed vessels containing, a
freezing mixture are placed in the meat chamber. By these vessels thus charged
the temperature of the meat chamber is to a considerable extent governed and the
consumption of ice in the ice box or bin aforesaid controlled.
In the accompanying sheet of illustrative drawings
Fig. 1 represents a sectional plan of a refrigerating chamber constructed and
fitted in accordance with this invention.
Fig. 2 is a vertical section on the line, ., Fig. 1.
Fig. 3 is a vertical transverse section on the line y, y, Fig. 1, and
Fig. 4 is a part sectional plan on the line z,, Fig. 3.
At one end of the chamber A, some of the walls a of which are, as is usual in
such chambers, made airtight by being doubled and packed with sawdust, is a bin b
ou a rack c in which are placed blocks of ice d. This bin may be formed
by carrying a double wall packed with sawdust across the chamber A, or it may be
a separate box contained behind such double-walled partition between which and
the box a space may be left for circulation of air. Below the ice rack c is a
tray e, preferably of galvanized iron. This tray receives the water resulting from
the melting of the ice blocks d and such water is conducted to the exterior of the
structure by the pipe, Figs. 3 and 4. Communication between the space below
the rack c and the ment chamber A is established by the conical nozzles g which
at the inner and larger ends open into the bin and at the outer and smaller ends.
into the chamber A.
'
The air cooled by the presence of the ice issues from the bin b through
the nozzles into the chamber A. which is fitted with wire netting. I
standing out from the walls and having hooks for suspension of meat and other
provisions which are thereby kept out of contact with the walls. Similar hooks
are provided in a hanging bar m extending longitudinally in the chamber A.
Above the bin b, and elsewhere in the chamber A as may be convenient, are
placed vessels charged with a mixture of ice, coarse or freezing salt, bicarbonate
of soda, powdered chalk, powdered alum, boracic acid, carbonate of ammonia and
tartaric acid. The vessels shown in the drawings are approximately 3 feet in
length and 11 inches diameter. For each such vessel the freezing mixture is made
up of the said ingredients in the following approximate quantities:-ice, 60 16s.
conrse or freezing salt, 15 lbs.; bicarbonate of soda, lb. powdered chalk, lb.;
alum, 8 oz. boracic acid, 2 oz.; carbonate of ammonia, 2 oz.; and tartaric acid
1 oz.
For larger and smaller vessels the proportions will vary accordingly.
The vessels are first charged with the bicarbonate of soda, powdered chalk,
powdered alum, boracic acid, carbonate of ammonia and tartaric acid previously
inixed.
A layer of ice is then added and upon this is deposited a layer. of salt. Then
another layer of ice is put in and so on with each alternately. The chemical action.
set up by the contents of the vessels produces cold as is well understood and thus the
temperature in the chamber A is further lowered.

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Those vessels which are above the ice bin communicate with each other
by the pipe. At the cock the liquid contents of the vessels are drawn off as
required when spent. The vessel in one corner of the chamber A has a similar
'escape pipe . Moisture contained in the air in the chamber A freezes on the
exterior of the vessels hand in event of the ice thus formed melting the resulting.
water from those vessels which are above the bin is received in the tray j and
flowing thence through the grating on to the ice blocks d finally passes out
through the outlet pipe..
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 a cooling or refrigerating chamber for preserving meat, poultry and other
provisions, improved means for producing and maintaining the necessary low tem-
perature, the said moans consisting of a bin or box such as b containing a rack auch
as c supporting blocks of ice, the said bin or box being fitted with conical nozzles
such as for supplying cold air from the bin to the preserving chamber, substantially
as hereinbefore described with reference to the accompanying sheet of illustrative
drawings.
2. The provision below the ice rack cof a tray e at the bottom of the bin b for
receiving water from the ice blocks, said tray being fitted with a suitable outlet
pipe such as carried to the exterior of the structure, as hereinbefore described.
3. In a cooling or refrigerating chamber for preserving meat, poultry and other
provisions, the conjunction with an ice bin such as b of vessels such as containing
an effervescent freezing mixture composed of ice, coarse or freezing salt, bicarbonate
of soda, powdered chalk, powdered alum, boracic acid, carbonate of ammonia and
preferably also tartaric acid, charged into the said vessels in the manner hereinbefore
described and in approximately the proportions specified.
Dated this 12th day of April 1004.
NICHOLAS WATTS,
Bristol Bank Buildings, Bristol, Chartered Patent Agent.