IMPROVEMENTS IN GAS STOVES TO BE NAMED THE CAMBRIDGE GAS STOVE
Year: 1873

page_text: LETTERS PATENT to William Winstanley Strode, James Mackenzie,
and Edward Philip Williams, all of the Firm of Strode & Company,
Gas Fitters & Engineers, of 19, Osnaburgh Street, Regent's Park,
in the County of Middlesex, for the Invention of "IMPROVEMENTS IN
GAS STOVES TO BE NAMED THE CAMBRIDGE GAS STOVE."-A communi-
cation from abroad by the Revd. David Haskins, of Boston,.
PROVISIONAL SPECIFICATION left by the said William Winstanley
Strode, James Mackenzie, and Edward Philip Williams at the Office
of the Commissioners of Patents, with their Petition; on the 20th.
December 1873.
We, WILLIAM WINSTANLEY, STRODE, JAMES MACKENZIE, and EDWARD
PHILIP WILLIAMS, all of the Firm of Strode & Company, Gas Fitters
& Engineers, of 19, Osnaburgh Street, Regent's Park, in the County.
of Middlesex, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN GAS STOVES TO BE NAMED THE CAMBRIDGE GAS STOVE," a

page_text: communication to us from abroad by the Rev. David Haskins, of
Boston, Massachusetts, United States of America, to be as follows:-
This Invention relates to improvements in the arrangement and con-
struction of gas stoves whereby the gas is most efficiently and
economically consumed, the whole of the heat developed by the com-
bustion of the gas being absorbed and utilized by radiation within the
room or chamber in which the stove is placed.
The most convenient form of the stove is that of a cylinder (although
this may be varied) having an inner and outer casing forming an annular
chamber in which the gas is burned, either by Bunsen, diluted, or other
gas burners, so arranged as to cause the flames to impinge upon the
inner casing of the chamber. The annular chamber is constructed with
a division so that the heated products of combustion must pass up one
side and down the other on their way to the escape pipe and chimney.
In the front division of the annular chamber several strips of metal are
fixed one above the other slightly increasing in width upwards, being so
placed that they will catch without impeding the ascending flames of
gas, and serving as reservoirs of heat, and also to transmit heat to the
inner casing of the stove. This inner casing forms an open cylinder
through which the cold air from the bottom of the room (or from the
outer atmosphere) is constantly ascending in a heated current.
Across the open cylinder or central passage wire netting is arranged
in horizontal layers or otherwise, the edges being in close contact with
the hot inner casing of the stove. Each strand of the wire gauze thus
becomes a conductor of heat and forms a succession of reticulated
surfaces through which the current of cold air is obliged to pass in a
finely divided state so as to become heated in the most rapid and effectual
manner.
If desired perforated plates of metal may be substituted for the wire
gauze or used in combination therewith. The opening to the burners
may be arranged with a reflector and closed in by wire gauze or other-
wise, as may be desired.
The stove may be enclosed in an outer casing of tin so as to admit of
its being used as a furnace in the basement or below the room it is
required to heat by means of a current of pure warm air passing through
pipes connected with a register.

page_text: تا
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said William Winstanley Strode, James Mackenzie,
and Edward Philip Williams in the Great Seal Patent Office on the
20th June 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
WINSTANLEY STRODE, JAMES MACKENZIE, and EDWARD PHILIP
WILLIAMS, all of the Firm of Strode and Company, Gas Fitters and .
Engineers, of 19, Osnaburgh Street, Regent's Park, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of December, in the
year of our Lord One thousand eight hundred and seventy-three, in
the thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto us, the said William Winstanley Strode,
James Mackenzie, and Edward Philip Williams, Her special license that
we, the said William Winstanley Strode, James Mackenzie, and Edward
Philip Williams, our executors, administrators, and assigns, or such
others as we, the said William Winstanley Strode, James Mackenzie,
and Edward Philip Williams, our 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 King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN GAS STOVES TO BE NAMED THE
CAMBRIDGE GAS STOVE,' a communication to us from abroad by the
Reverend David Haskins, of Boston, Massachusetts, United States of
America, upon the condition (amongst others) that we, the said
William Winstanley Strode, James Mackenzie, and Edward Philip
Williams, our executors or administrators, by an instrument in writing
under our or their hands and seals, or under the hand and seal of one
of us or them, 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 William Winstanley. Strode, on

page_text: If desired perforated plates of metal may be substituted for the
wire gauze or used in combination therewith. The opening to the
burners may be arranged with a reflector and closed in by wire gauze
or otherwise, as may be desired.
The stove may be enclosed in an outer casing of tin or other metal or
material so as to admit of its being used as a furnace in the basement or
below the room it is required to heat by means of a current of pure
warm air passing through pipes connected with a register.
Having thus described the nature of the Invention, and the manner of
performing or carrying the same into practice, we would remark that
the form and arrangement of the parts employed in the construction of
gas stoves in accordance with these improvements may be considerably
varied without departing from the main features of this Invention, but
what we claim is the improved arrangement and construction of gas
stoves whereby a current of fresh air is warmed in its passage through
the body of the stove by passing between or in contact with heated
surfaces of wire gauze, perforated plates, or other equivalent means,
substantially as and for the purposes herein-before described and repre-
sented in the Drawings hereunto annexed.
In witness whereof, I, the said William Winstanley Strode, have
hereunto set my hand and seal, this Nineteenth day of June, in
the year of our Lord One thousand eight hundred and seventy-
four.