Improvements in Apparatus connected with the Furnaces of Steam Boilers.
Year: 1890

page_text: Date of Application, 20th June, 1890
Complete Specification Left, 19th Mar., 1891-Accepted. 25th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus connected with the Furnaces of Steam
Boilers.
We, ENOCH BINNS, Foreman, and HARRY COLLIER, Welded Boiler Maker,
both of Atlas Works, Halifax, in the County of York, do hereby declare the
nature of this invention to be as follows:-
This invention relates to means of and improved apparatus for affording an
adjustable supply of air to the furnaces of steam boilers independent of the
ventilator grid or independent of the supply by way of the under side of the grate
bars, and ensures direct application to, and concentration of air upon the front part
of the fire.
According to this our said invention we employ a main pipe supplied with air by
fan blower, or other source of supply, such pipe extends across the front of the
boiler and branching from the main are two discharge pipes, which are passed
through the casing of the flu, one on each side of the furnace door and extending
into the flue their ends being preferably curved or at an angle so as to direct and
converge the discharged air to and upon the front portion of the fire.
Where two or more boilers are side by side the main supply pipe is carried along
the fronts of the whole series, and the requisite branch pipes are connected to the
main. The orifice of each discharge pipe may be contracted where found
advantageous, and it may be provided that the discharge ends-that is to say-the
ends of the pipes nearest the fire; may be screwed on or otherwise attachable and
detachable so as to provide ready means of renewal, when burnt or worn out
without necessity of displacement of other part or parts of the whole.
The use of the improved apparatus above described we have found gives
increased results when the length of furnace is shortened, that is the bridge brought
nearer to the dead plate.
WALTER
BRIERLEY,
Central Chambers, Halifax, Agent for the Applicants..
COMPLETE SPECIFICATION.
Improvements in Apparatus connected with the Furnaces of Steam
Boilers.
||WC, ENOCH BINNS, Foreman, and Harry COLLIER, Welded Boiler Maker,
both of Atlas Works, Halifax, in the County of York, 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 means of and improved apparatus for affording an
adjustable supply of air to the furnaces of steam boilers independent of the
ventilator grid or independent of the supply by way of the underside of the grate
bars, and ensures direct application to and concentration of air upon the front part
of the fire.
According to this our said invention we employ a main pipe supplied with air by.
fan, blower, or other source of supply, such pipe extends across the front of the
boiler and branching from the main are two discharge pipes, which are passed
through the casing of the flue, one on each side of the furnace door and extending
into the flue their ends being preferably curved or, at an angle so as to direct and
converge the discharged air to and upon the front portion of the fire.

page_text: Where two or more boilers are side by side the main supply pipe is carried along
the front of the whole series, and the requisite branch pipes are connected to the
main. The orifice of each discharge pipe may be contracted where found
advantageous, and it may be provided that the discharge ends, that is to say-the
ends of the pipes nearest the fire may be screwed on or otherwise attachable and
detachable so as to provide ready means of renewal, when burnt or worn out without
necessity of displacement of other part or parts of the whole.
Such being the nature and object of our said invention the following is a complete
description of same reference being had to the accompanying drawings in which,
Fig. 1 is a front elevation of a boiler having two flues and our improved apparatus
for purpose aforesaid applied thereto.
Fig. 2 is a plan view in section on line A. B of Fig. 1 the fuel being removed
from one of the flues.
The remaining figs. on Sheet 2 are details.
According to this our said invention we employ a main pipe supplied with air
by fan, blower, or from any other convenient source of supply, such pipe 1 extends
across the front of the boiler 2 and branching from the main 1 are two discharge
pipes 3. 3 which are passed through the casing 4 without interfering with the water
or steam way of the flue 5, one on each side of the furnace door 6 and extending
into the flue 5 their ends 7 being preferably curved or at an angle so as to direct and
converge the discharged air to and upon the front portion of the fire.
Where two or more boiler flues, or furnaces are side by side the main supply
pipe 1 is carried along the front of the whole series, and the requisite number of
branch pipes 3. 3 are connected to the main 1 and applied to the furnace, or flue in
the manner above described.
The orifice of each discharge pipe 3 may be contracted where found advantageous,
and it is provided that the discharge ends 7 that is to say, the ends of the pipes 3. 3
nearest the fire, may be screwed on, or otherwise attachable, and detachable, so as
to provide ready means of renewal, when burnt, or worn out, without necessity of
displacement of other part or parts of the whole. The ends 7. 7. of the discharge
pipes are formed somewhat similar to ordinary "tue irons" and are preferably made
much thicker, and stronger than the remaining portion 3 of each pipe so as not to
be as soon burnt or otherwise rendered useless by the great heat to which they are
necessarily subjected. The valve 9 is for the purpose of regulating the supply of
air passing along the main pipe 1 to the first flue, or furnace, and the valve 10
regulates the supply to the second flue or furnace, and one of such valves, or
regulators is employed for each one of the flues or furnaces when several of the
latter are supplied with air from one main.
In cases where the surface area of the furnace is ample under existing arrange-
ments to provide the requisite head of steam the length of such furnace, where this
invention is applied may with advantage be shortened, and the boiler can be
maintained at its full pressure, and fuel which heretofore could not be used without
forming a large amount of "clinker" is rendered advantageously combustible.
Having now particularly described and ascertained the nature and object of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
The general arrangements of parts comprising pipes, branch pipes, detachable
end, regulating and controlling valve, all in combination and substantially as
illustrated by annexed drawings and herein fully set forth.
HARICH 1001.
ENOCH BINNS.
HARRY COLLIER.
By their Agent, Walter Brierley,
Central Chambers, Halifax.