Improved Arrangements of Boiler Flues for the More Economical Working of Steam Bollers and More Equal Distribution of Heat.
Year: 1893

page_text: Date of Application, 14th June, 1893
Complete Specification Left, 14th Mar., 1894-Accepted 12th May, 1894
PROVISIONAL SPECIFICATION.
Improved Arrangements of Boiler Flues for the More Economical
Working of Steam Bollers and More Equal Distribution
of Heat.
GEORGE PADGET 71 Bridge Street Sheffield Engine Tenter do hereby declare
the nature of this invention to be as follows:-
The passing of the heat twice under the boiler (lengthways) before passing into
side flues by means of a centre partition wall (lengthways) under the boiler
bottom & a cross wall at a convenient distance under & from the front end of
boiler an opening being left between end of centre wall and cross wall and through
an opening in the sustaining wall at the back end and into the side flue. All the
heat passing from the back end on one side of the centre wall (either right or
left side first as the choice may be) named above then through the opening
between end of centre wall and cross wall (named above) then on the other side
of centre wall to the back end at a convenient distance from back end of boiler
the heat to pass from the flue under the boiler to the side flue through an opening
in the sustaining wall (left or right side corresponding with the choice named above)
then on the side flue to the front end pass under the boiler bottom at the front end .
and into opposite side flue.
Dated this 13th day of June 1893
GEORGE PADGET.
COMPLETE SPECIFICATION.
Improved Arrangements of Boiler Flues for the More Economical
Working of Steam Boilers and More Equal Distribution
of Heat.
I, GEORGE PADGET 71 Bridge Street, Sheffield, 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 is for an improved arrangement of the built flues of steam boilers,
the object being to more equally distribute the heat upon the surface of the boiler,
and thus work more economically than heretofore.
The improved arrangement is shown in the annexed sheet of drawings,-
in which:
Fig. 1, is a plan of the brickwork and flues with the boiler removed.
Fig. 2, front view of boiler, and flues.
In carrying out my invention, I build the flues for a double flued boiler for
example such as indicated in Fig. 2, in the following manner and as shown
in Fig. 1, of the drawings, that is with a centre or mid-feather wall A, and two
sustaining walls B and B2, a cross wall C, at some distance from the front wall D,
two outside walls E, and E, end wall E³, and outside the end wall I build a
chamber G, which connects the boiler tube flues B T, with the built flues.
The heated gases and flame pass from the boiler tube flues into the chamber G,
then through an opening in the wall E³, indicated by dotted lines into the flue F¹,
round the end of mid wall A, up flue F, through an opening O, in wall B, down
flue F, into chamber F, under the front end of boiler, then up flue F³, and
D

page_text: forward to chimney stack. The course described is shown by the arrows and
continuous dotted lines.
It will be obvious that I may reverse the direction of the passage of the gases,
by removing the opening from the chamber G, to the opposite side, and building
the flues to correspond therewith.
For cleaning out the flues I propose to place flue-doors F D, where indicated,
and a removable block or slab of fire clay FC, may also be placed in the wall C,
but these form no part of my invention, nor do I bind myself to any dimension,
proportions, or details that may be shown in the drawings, and that are not
essential to the invention.
By this arrangement of flues the flame and heated gases from the boiler furnaces
are more equally distributed, the greatest heat being brought to bear upon that
part of the boiler where the greatest bulk of water is.
It will be understood that this arrangement of flues may be applied to boilers
having one or more flues and also to multitubular boilers.
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 stationary tubular steam
boilers, as herein before described and substantially as illustrated in the annexed
drawings.
1 the 13th day of March 1894.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield,. Agent for Applicaut.