CERTAIN IMPROVEMENTS IN THE CONSTRUCTION OF A MACHINE FOR HEATING ALL KINDS AND DESCRIPTION OF FURNACES WITH COAL OR OTHER GASES
Year: 1855

page_text: PROVISIONAL SPECIFICATION left by Thomas Dodds, Richard Leake,
and William Fletcher at the Office of the Commissioners of Patents,
with their Petition, on the 2nd March 1855.
We, THOMAS DODDS and RICHARD LEAKE, of No. 4, Horse-shoe Court,
Ludgate Hill, London, Lithographers, & WILLIAM FLETCHER, of No. 2,
St. James Street, Old Kent Road, London, Engineer, do hereby declare the
nature of the said Invention for "CERTAIN IMPROVEMENTS IN THE CONSTRUCTION
OF A MACHINE FOR HEATING ALL KINDS AND DESCRIPTION OF FURNACES WITH
COAL OR OTHER GASES " to be as follows:-
Refering to Drawing annexed, X, X, shows a strong cast-iron fraim firmly
fixed in the opening to the furnace; A, A, shows a strong cast-iron plate,
which is fitted into the strong cast-iron fraim X, X, to which and through
which are fixed the various attachments composing this machine; B shows a
main pipe which supplies the gas through the whole machine from the gas
metre; C, C, shows a throttle valve and lever to be acted upon by steam for
regulating the necessary supply of gas when the machine is used for generating
steam in boilers, &c.; D shows Tee piece, reducing where the main cock or
valve F is attached; E shows a main cock or valve that will entirely shut off
the current of gas from the three or more pipes H, H, H; F shows a smaller
main cock or valve, on which is attached an elbow to supply the pipe K, K, K,
with gas, as occasion may require; G shows an hollow case or receiver,
supplying the three or more pipes H, H, H, which case or receiver is fixed by
bolts and nuts on the strong cast-iron plate A; H, H, H, shows three or more

page_text: pipes connected to the hollow case or receiver G, and which conveys the gas
to the end of jets or burners; I shows an iron door, attached by hinges to
strong iron plate A, to regulate the quantity of atmospheric air required for
combustion; J, J, shows an hollow wrought-iron case, which, being fixed on
strong cast-iron plate A, conveys atmospheric air admitted through the iron
door I to the end of jets or burners attached to the three or more iron pipes
H, H, H, for combustion of coal or other gases; K, K, K, shows a pipe
attached by elbow to smaller main cock or valve, for the purpose of admitting
light or continued heat when used in certain furnaces, such as bakers' ovens, &c. ;
L shows a cast-iron plate, to keep the pipes, the atmospheric air case, and the
machine generally in their proper position.
We claim as our Invention this machine, as specified, to be used for the
purposes of heating water, generating steam in boilers; also to be applied to
the heating of bakers' ovens, greenhouses, cooking apparatus, and all furnaces
and stoves, and for generating hot air by the use of coal and other gases
through this machine.
The manner of using this machine is as follows:-When fixed as specified,
we turn on the gas from the main cock or valve E, which passes through the
three or more pipes H, H, H, to the jets, which is then ignited, and the air
which passes through iron door I and hollow tube J, J, causes a complete
combustion, causing sharp and rapid heat, and preventing the escape of all
smoke.