Improvement in the Construction of the Flues for Single and Double Flue Steam Boilers.
Year: 1893

page_text: Date of Application, 23rd Feb., 1893
Complete Specification Left, 2nd Nov., 1893-Accepted, 2nd Dec.,
1893
PROVISIONAL SPECIFICATION.
Improvement in the Construction of the Flues for Single and
Double Flue Steam Boilers.
I SAM Fox of Boston Street, Sheffield in the County of York, Engine Tenter,
do hereby declare the nature of my invention to be as follows:-
This invention relates to a novel construction or arrangement of the built flues
of boilers, the object being to utilise the heated gases from the fire, to their fullest
extent.
I propose to support the boiler upon two side walls which are joined at the end
of boiler by a cross wall; these walls stop before reaching the front of boiler so
as to form an entrance or exit at each side, and a division wall is built from
front of boiler down the centre to within a short distance from the cross wall
beforementioned.
The flues or tubes of the boiler open into a chamber at the end, one side of which
is formed by the cross wall, and this chamber is continued in the form of a flue
down one side of the boiler, communicating with the divided central space before
described, down which the heated gases pass returning on the. opposite side of the
wall and into a return flue running down the side of boiler and passing forward to
chimney.
Dated the lat
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvement in the Construction of the Flues for Single and
Double Flue Steam Boilers.
I, SAM Fox of Boston Street, Sheffield in the County of York, Engine Tenter,
do hereby declare the nature of this invention and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
This invention relates to a novel construction or arrangement of the built flues
of boilers, the object being to utilise the heated gases from the fire, to their fullest
extent.
I propose to support the boiler B, upon two side walls W, which are joined at
the end of boiler by a cross wall C. W; these walls stop before reaching the front
of boiler B, so as to form an entrance or exit at each side, and a division wall D W,
is built from front of boiler down the centre to within a short distance from the
cross wall C W, beforementioned.
The flues or tubes of the boiler E, open into a chamber C, at the end, one side of
which is formed by the crosswall C W, and this chamber is continued in the form
of a flue F, down one side of the boiler, communicating with the divided central
space before described, down which the heated gases pass returning on the opposite
side of the wall and into a return flue R F running down the side of boiler and
passing forward to chimney at C S.
Thus the heated gases and flame are carried over all the underside surface
of the boiler; and are retained as long as is necessary to transmit their heat.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The construction and arrangement of the built flues of steam. boilers, for the
purpose specified substantially in the manner as hereinbefore described and
illustrated.
Dated the 21st day of October 1803
R. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.