AN IMPROVED MODE OF CONSTRUCTING AND HEATING COOKING AND LAUNDRY STOVES
Year: 1869

page_text: LETTERS PATENT to John Crawford Walker, of Hackney Wick, in
the County of Middlesex, for the Invention of "AN IMPROVED MODE
OF CONSTRUCTING AND HEATING COOKING AND LAUNDRY STOVES."
PROVISIONAL SPECIFICATION left by the said John Crawford Walker
at the Office of the Commissioners of Patents, with his Petition,
on the 23rd December 1869.
I, JOHN CRAWFORD WALKER, of Hackney Wick, in the County of
Middlesex, do hereby declare the nature of the said Invention for "AN
IMPROVED MODE OF CONSTRUCTING AND HEATING COOKING AND LAUNDRY STOVES,"
to be as follows:-
The object and intention of this Invention is to promote convenience
and economy, and consists essentially of a double cylinder containing
water heated by a lamp in which petroleum or any of the oils used for
illuminating purposes is to be used as the heating agent. The following
is an example of the construction of the said stoves, and the method of
heating them, and of operating therewith for cooking and laundry

page_text: purposes: I form the body of the stove of two cylinders placed one
within the other and closed at their bottom edges, so as to leave a clear
space or upright flue through the centre. The stove thus constructed
is mounted on legs. The top of the space between the two cylinders
may be enclosed by an annular lid or cover either removable or fixed,
and if fixed an opening fitted with a lid is made for the admission of
water to fill or nearly so the space between the two cylinders, thus
forming a boiler. There is a cock fixed into the said boiler noar the
bottom thereof for drawing off the water when required. A piece of
thin metal in the form of a cross is placed across the aforesaid central
flue, upon which saucepans and other cooking utensils of smaller
diameter than the flue may be placed. Another cross-shaped piece of
metal rests loosely on the top of the stove to receive saucepans, frying
pans, and other cooking utensils that are larger than the flue of the
stove. Instead of having the aforesaid circular flue entirely surrounded
by the aforesaid circular boiler one or more sections or openings may be
made or partitioned off through the boiler and furnished with doors so
as to serve as ovens for baking.
The following is the mode of heating a stove thus constructed :—
A lamp with two or more wicks according to the size of the stove is
placed under the central flue. The burners pass through openings in a
false bottom of perforated sheet metal or wirework and extend to raised
openings in a real bottom fixed in the flue. By these means the water
in the boiler may be rapidly heated and eatables cooked by placing them
either in or on the stove or in the ovens.
For laundry purposes the stove may be made as first described, and a
boiler fitted thereonto for boiling linen, and the outside of the stove be
suitably formed to receive flat irons to be heated and used for ironing
articles of dress.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 3
filed by the said John Crawford Walker in the Great Seal Patent
Office on the 23rd June 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
CRAWFORD WALKER, of Hackney Wick, in the County of Middlesex,
send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of December, in. the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Crawford Walker, Her special
licence that I, the said John Crawford Walker, my executors, adminis-
trators, and assigns, or such others as I, the said John Crawford Walker,
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
"AN IMPROVED. MODE OF CONSTRUCTING AND HEATING COOKING AND LAUNDRY
STOVES,!!
upon the condition (amongst others) that I, the said John
Crawford Walker, my executors 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 John Crawford Walker; do hereby
declare the nature of the said Invention, and in what manner the same.
is to be performed, to be particularly described and ascertained, in and
by the following statement, that is to say :-
The object and intention of this Invention is to promote convenience
and economy, and consists essentially of a double cylinder containing
water heated by a lamp in which petroleum or any of the oils used for
illuminating purposes is to be used as the heating agent. The
following is an example of the construction of the said stoves, and
the method of heating them, and of operating therewith for cooking and
laundry purposes:-I form the body of the stove of two cylinders placed
one within the other and closed at their bottom edges so as to leave a
The stove thus
clear space or upright flue through the centre..
constructed is mounted on legs. The top of the space between the two
cylinders may be enclosed by an annular lid or cover either removable
or fixed, and if fixed an opening fitted with a lid is made for the
admission of water to fill or nearly so the space betwen the two cylinders,
thus forming a boiler. There is a cock fixed into the said boiler near

page_text: the bottom thereof for drawing off the water when required. A piece of
thin metal in the form of a cross is placed across the aforesaid central
flue, upon which saucepans and other cooking utensils of smaller
diameter than the flue may be placed. Another cross-shaped piece of metal
rests loosely on the top of the stove to receive saucepans, frying pans, and
other cooking utensils that are larger than the flue of the stove. Instoad
of having the aforesaid circular flue entirely surrounded by the aforesaid
circular boiler one or more sections or openings may be made or
partitioned off through the boiler and furnished with doors so as to serve
as ovens for baking.
The following is the mode of heating a stove thus constructed :-
A lamp with two or more wicks according to the size of the stove
is placed under the central flue. The burners pass through openings in a
false bottom of perforated sheet metal or wirework and extend to
raised openings in a real bottom fixed in the flue. By these means
the water in the boiler may be rapidly heated and eatables cooked by
placing them either in or on the stove or in the ovens.
For laundry purposes the stove may be made as first described and a
boiler fitted thereonto for boiling linen, and the outside of the stove be
suitably formed to receive flat irons to be heated and used for ironing
articles of dress.
And in order to explain this Invention more completely I will now
proceed to describe the best means I am acquainted with for
carrying the same into practical effect, reference being had to the
illustrative Sheet of Drawings accompanying these Presents, and to the
numeral figures and letters of reference marked thereon respectively as
follows:-

page_text: the bottom with two bottoms G, H; that marked G is formed with
funnels a, a, and that marked H is formed with openings b, b, corre-
sponding to the funnels a, a, to receive four burners I of a lamp. K
intended to burn petroleum or other mineral oil; c, c, are holes for
supplying atmospheric air to the lamp to support combustion. The
construction of this lamp is as follows:-L marks the body or reservoir
of the lamp closed at top and bottom, except those parts of the top into
which the wick holders or burners I are fixed; each burner is formed
with a double cylinder at d to admit of the passage at e of a current of
air between them to keep the wick holders cool. I would here remark
that when the body of the lamp is made of metal it may be covered at
top with felt or other non-conductor of heat, or it may be enamelled, or
the body of the lamp may be made of glass or any other material or
combination of materials that are non-conductors of heat, the intention
being to keep the oil in the lamp cool; M, handles and pinions for
raising and lowering the wicks as required; N, stand for lamp; O, cock
for drawing off water from the boiler; P, skeleton frame fixed inside
the cylinder A to support a saucepan or boiler; Q, are projecting pieces
to support a pan or other article when it is required to fry or
otherwise cook anything at the top of the stove. The pieces Q are
for the purpose of not checking the draught up the central flue of tho
stove.
Having now fully described and set forth the nature and object of
my said Invention for "An improved Mode of Constructing and Heating
Cooking and Laundry Stoves," together with the best means I am
acquainted with for carrying the same into practical effect, I would
remark in conclusion that I hereby declare my Invention to consist
in and I claim, constructing and heating cooking and laundry stoves
substantially as above described and represented.
In witness whereof, I, the said John Crawford Walker, have here-
unto set my hand and scal, this Twenty-second day of June, in the
year of our Lord One thousand eight hundred and seventy.