IMPROVEMENTS IN APPARATUS FOR COOKING AND OTHER PURPOSES
Year: 1869

page_text: LETTERS PATENT to Hugh Adams Silver, of 2, 3, and 4, Bishopsgate
Within, in the City of London, Merchant, for the Invention of
"IMPROVEMENTS IN APPARATUS FOR COOKING AND OTHER PURPOSES."
Sealed the 13th July 1869, and dated the 16th January 1869.
PROVISIONAL SPECIFICATION left by the spid Hugh Adams Silver
at the Office of the Commissioners of Patents, with his Petition,
on the 16th January 1869.
I, HUGH ADAMS SILVER, of 2, 3, and 4, Bishopsgate Within, in the
City of London, Merchant, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN APPARATUS FOR COOKING AND OTHER PURPOSES,"
to be as follows: -
My Invention has for its object the cooking of food and the retention
of heat in articles and substances of various kinds. For these purposes
my Invention consists in the combination of a vessel having a jacket or
Price 8d.1

page_text: inner lining of tin, copper, tinned iron, or other suitable material, in the
inner space or compartment of which is a dry heat, with an outer case
or heat retainer constructed in the manner described in the Specification
of a Patent granted to Henri Adrien Bonneville, as a communication
from Juan Sorensen, dated August 23rd, 1867, No. 2417. The jacket of
the said jacketed vessel has a nozzle or lip, and being partly filled with
water is placed on a fire, by which means the inner space or compart-
ment of the jacketed vessel is heated with a dry heat, thereby adapting it
to receive a partially roasted joint of meat or other article or substance
required to be completely cooked or kept hot when enclosed in the heat
retainer. By means of the aforesaid combination of a jacketed vessel
(having an inner space or compartment heated with a dry heat), with a
heat retainer of the kind referred to, food may be cooked or articles or
substances may be kept hot, and a dry heat may be maintained for a
lengthened period of time.
The mode of constructing the said jacketed vessel may be varied. In
some cases it may be constructed with several separate compartments
consisting of a number of tin cases of convenient size and shape inserted
in corresponding holes in the under side of a sheet or plate of tin or
other suitable material to which they are fixed, and which forms the top
of the vessel These several tins or compartments are thus contained
within the vessel, which is partly filled with water which is heated as
required, and by this arrangement the several tins or compartments have
a dry heat imparted to their interior in the same manner as in the case
of the jacket or inner lining before described. The case containing
the several tins or heated compartments is inserted in the heat retainer
as before.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Hugh Adams Silver in the Great Seal Patent
Office on the 16th July 1869.
SHAU
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Hugh Adams Silver in the Great Seal Patent
Office on the 16th July 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, 1, HUGH
ADAMS SILVER, of 2, 3, and 4, Bishopsgate Within, in the City of
London, Merchant, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of January, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Hugh Adams Silver, Her special
licence that I, the said Hugh Adams Silver, my executors, adminis-
trators, and assigns, or such others as I, the said Hugh Adams
Silver, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might,
make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "IMPROVEMENTS IN APPARATUS FOR COOKING AND OTHER PURPOSE,"
upon the
condition (amongst others) that I, the said Hugh Adams Silver, my exe.
cutors or administrators, by an instrument in writing under my, or their,
or one of their hands and seals, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was to
be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said Hugh Adams Silver, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the Drawing here-
unto annexed, and to the letters and figures marked thereon (that is
to say):-
My Invention of "Improvements in Apparatus for Cooking and other
Purposes" has for its object the cooking of food and the retention of
heat in articles and substances of various kinds. For these purposes my
Invention consists in the combination of a vessel having a jacket or
inner lining of tin, copper, tinned iron, or other suitable material, in the
inner space or compartment of which is a dry heat with an outer case or
beat retainer constructed in the manner described in the Specification of
a Patent granted to Henri Adrien Bonneville, as a communication from
Juan Sorensen, dated August Twenty-third, One thousand eight hundred
and sixty-seven, No. 2417. The jacket of the said jacketed vessel has a
nozzle or lip. and being partly filled with water is placed on a fire.by which

page_text: Fig. 1 is a plan or horizontal view of the apparatus with the lid of the
heat retainer opened; Fig 2 is a vertical section of the apparatus, and
Fig. 3 is an elevation of the jacketed vessel detached. In these several
Figures the same letters of reference indicate corresponding parts.
A is the jacketed vessel having a jacket or inner lining, thereby
forming a chamber B to be filled with hot water, and a space or com-
partment C for dry heat. The said chamber B is supplied with water
through the aperture at D, which water is heated as required, and the
article or articles, substance or substances required to be cooked or kept

page_text: hot is or are placed in the space or compartment C. When a joint or
other article of food is required to be roasted it is merely browned before
a fire, and then placed on the strainer E in the dry heat compartment C,
and being enclosed in the heat retainer F the roasting is completed.
Also when articles of food or other articles or substances are required
to be kept hot they are placed (separately or in suitable vessels) in the
dry heat compartment C, and enclosed in the heat retainer in the same
manner.
I have only thought it necessary to shew a simple form of the
apparatus in order to illustrate its construction so as to adapt it for
cooking food or keeping articles or substances hot by the maintenance of
a dry heat; it will be obvious however that the apparatus may be
varied in form without at all departing from its essential feature of
providing a dry heat compartment or compartments surrounded by hot
water, and enclosed in a heat retainer of the kind referred to.
In some cases the apparatus instead of being portable may be fixed,
and in such cases it may be composed of iron, copper, or other suitable
material, and covered with a sufficient thickness of felt or other material
that is a good non-conductor of heat, the whole being surrounded by or
Also when
enclosed in a caso of wood or other suitable material.
convenient the apparatus so constructed may be connected by means of a
pipe with a steam boiler, so as to admit of a supply of steam or hot water
being passed into the jacket of the apparatus, such supply of steam or
water being regulated as required by means of taps. In some cases
also it is desirable to draw off the vapours generated in the cooking
process, and for this purpose an air pump is or may be connected by
means of a pipe with the dry heat compartment or chamber in which
the meat is being cooked, from which compartment or chamber such
vapours may be thereby diawn off as required. The size of the airp
will depend upon that of the apparatus to which it is applied.
pump
Having thus described the nature of the said Invention, and in what
manner the same is to be performed, I hereby declare that what 1 claim
us of my Invention is, the combination of a jacketed vessel having a
jacket to receive steam or heated water and a dry heat compartment,
such jacketed vessel being enclosed in a heat retainer of the kind or
kinds referred to for the purpose of maintaining a dry heat, and thereby

page_text: cooking articles of food or keeping hot articles or substances as
described.
In witness whereof, I, the said Hugh Adams Silver, have hereunto
set my hand and seal, the Fifteenth day of July, in the year
of our Lord One thousand eight hundred and sixty-nine.
Witness,
W. A. JACKSON,
8, Quality Court,
Chancery Lane.
HUGH A. SILVER. (L.S.)