IMPROVEMENTS IN GAS COOKING STOVES OR RANGES
Year: 1882

page_text: LETTERS PATENT to Alexander Melville Clark of the firm of A. M and
W Clark of 53 Chancery Lane in the County of Middlesex, Patent Agents
for an Invention of IMPROVEMENTS IN GAS COOKING STOVES OR RANGES Com-
municated to him from abroad by William Wallace Goodwin, of Philadelphia,
in the County of Philadelphia, State of Pennsylvania, United States of
Amanian
COMPLETE SPECIFICATION filed by the said Alexander Melville Clark at
the Office of the Commissioners of Patents on the 30th October 1882.
.
ALEXANDER MELVILLE - CLARK of the firm of A. M. and W. Clark of
53 Chancery Lane in the County of Middlesex, Patent Agents. "IMPROVEMENTS
IN GAS COOKING STOVES OR RANGES." Communicated to me from abroad by
William Wallace Goodwin of Philadelphia in the County of Philadelphia State of
Pennsylvania, United States of America.
The object of these improvements is to construct gas cooking stoves or ranges in
a manner to give the greatest facility and convenience for cooking operations, and
at the same time ensure the escape of the waste products of combustion to the
chimney or escape flue.
The Invention consists in the peculiar construction and arrangement of the top
plates of the stove and of the burners, as hereinafter described and claimed.
In the accompanying drawings forming part of this specification, similar letters
of reference indicate corresponding parts in all the figures.
Figure 1 is a vertical longitudinal section of a gas cooking stove of the improved
construction. Figure 2 is a transverse section of the same. Figure 3 is a plan
view. Figure 4 is a detail view showing the arrangement for supplying gas and
air to the burners.
The body of the stove may be of any usual or desired construction and the back
and side walls are preferably formed double with a space between filled with
non-conducting material. A represents the top plate of the oven over which the
products of combustion from the oven burners o o pass through the flue a to the
escape pipe b at the back part of the stove. The construction and arrangement of

page_text: the oven and the oven burner may be as desired. c is the top plate of the stove
provided with circular apertures and covers & as usual. Above the flue a through
which the products of combustion from the lower burner pass, is a chamber c
projecting into the escape pipe and forming a second passage for the products of
combustion of the lower and of the upper burner hereinafter described. The top
plate fof the chamber e is provided with apertures g beneath the openings of the
top plate c. The escape between these two plates c and f, communicates at the
back of the stove with the escape pipe b. The plate is formed at the edges of
its openings g with dopending flanges h h within which are the burners i to which
the gas is supplied by a pipe t extending through the front plate of the stove.
The gas supply pipe is provided with a suitable valve for regulating the gas
supply, and also with a register valve at the front of an air chamber ¹ for
admission of air with the gas, so that either pure gas may be used, or more or
less air mixed therewith to ensure proper combustion.
It will be seen that the gas burners are surrounded by a casing which prevents
the heat from escaping directly to the flue b beneath the plate f, or in other words,
a downward draught is prevented by the flanges of the plate which enclose the
burners. The burners being directly below the openings in the top plate c, and the
openings being adapted for receiving the saucepans, steamers, and other utensils
used in boiling and steaming, the heat is utilised to the greatest possible extent,
and at the samo time there is no place left open for the escape of the products of
combustion into the room, and they will pass through the escape flue b. The space
between the two plates cfthus becomes a heating chamber distinct from the
combustion chamber and flue passages in the lower part of the stove, having also a
separate exit for the chimney. Above the top plate fand beneath the burners is a
slide 8 that serves to catch any droppings which can be reinoved by drawing out
the slide.
Having described the nature of the said Invention and the manner of performing
the same, I declaro that what I claim as new and desire to secure by Letters
Patent is.-
1st The combination with the gas cooking stove herein described provided with
the burners o and the flue a, the escape pipe b, and the apertured top plate c of the
chamber e forming a second passage for the escape of the products of combustion
to pipe b, and apertured top platef having depending circular flanges h, upper
burners i, and auxiliary heating chainber 7, the whole constructed, arranged, and
operated in the manner set forth.
2nd The arrangement in a gas cooking stove, substantially as shown and
described, of the apertured plate beneath the apertured top plate of the stove, the
plate being provided with flanges enclosing the burners, as set forth.
3rd The arrangement, substantially as described, in gas cooking stoves, of a
heating chamber having an exit to the escape fluc, so as to be separate_and
distinct from the combustion chamber and flue passages in the lower part of the
stove, as set forth.
In witness whereof I the said Alexander Melville Clark have hereunto sot
iny hand and seal this thirtieth day of October. A.D. 1882.