Improved Apparatus for Consuming Smoke and Economizing Fuel in Steam Boiler and like Furnaces.
Year: 1888

page_text: Date of Application, 16th June, 1888
Complete Specification Left, 16th Mar., 1889-Accepted, 15th June, 1889
PROVISIONAL SPECIFICATION.
Improved Apparatus for Consuming Smoke and Economizing Fuel
in Steam Boiler and like Furnaces.
I JOHN EDWIN HALL of 88 Preston Terrace Redearth Road Darwen in the county
of Lancaster Fitter do hereby declare the nature of this invention to be as follows
My invention relates to improved apparatus for consuming smoke and economizing
fuel in steam boiler and like furnaces."
According to my invention I place behind the furnace bridge a hollow chamber
having its outer face plate perforated and opening into a second chamber placed
behind the first. I advantageously slope the upper part of this second chamber and
perforate the same by diagonal and diverging slits.
A pipe runs from the boiler front to the first chamber where the pipe is perforated
so as to admit air to the chamber. And I may fit a steam injector to the said pipe to
induce an air current.
Suitable valves control the air current and I may work the same by links or pivoted
rods or suitable connections from the furnace door as also the steam cock of the
injection jet if used, whereby the air current may be only used when the furnace door
is open for firing purposes.
I might dispense with the aforesaid air pipe and admit air to the first chamber by
a grating or valve.
Air admitted to the first chamber is heated by contact with the bridge and passes
into the second chamber from whence it escapes to the products of combustion
passing through the flue so commingling with same and ensuring good combustion
beyond the bridge.
Dated th: 15th J. of Lu1000
POPPLEWELL, COLTON & Co.
COMPLETE SPECIFICATION.
Improved Apparatus for Consuming Smoke and Economising Fuel
in Steam Boiler and like Furnaces.
I JOHN EDWIN HALL of 88 Preston Terrace Redearth Road Darwen in the County
of Lancaster Fitter do hereby declare the nature of my said invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement:-
My invention relates to improved apparatus for consuming smoke and economising
fuel in steam boiler and like furnaces.
Referring to the accompanying drawings
Figure 1 is a partial vertical sectional elevation of a steam boiler fitted with my
invention.
Figure 2 is an end elevation of the boiler.
Figure 3 is an end elevation of the rear of the end chamber through which heated
air escapes to mingle with products of combustion from the flue.
Figure 4 is an elevation of the front of the second chamber.
According to my invention I place behind the furnace bridge A a hollow chamber B
having its outer face plate B' perforated say by diagonal and diverging slits C
leading into the chamber E. This chamber B may be if desired furnished with a
perforated baffle plate or division D in order to constitute two chambers.
I advantageously slope the upper part of the chamber E and perforate the formed
angular portion as shewn.
•

page_text: A pipe Fruns from the boiler front G to the chamber E the pipe being perforated
at a so as to admit air to the chamber B from whence the air can pass to the
chamber E directly or indirectly through the perforated baffle plate or division D if
such be used.
If desired I may place another chamber under the bridge communicating with
chamber B and I may fit a steam injector of suitable construction to the pipe F to
induce an air current.
I may
Suitable valves are placed at I or otherwise to control the air current.
provide suitable links or connections from the furnace door, whereby the steam
cock of the injector jet (if used) is operated thus inducing an air current only when
the furnace door is opened for firing purposes.
I am well aware that hollow bridges have been used and hollow chambers behind
or under a bridge but not I believe according to my invention.
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 :
First In apparatus for consuming smoke and economising fuel in steam boiler
and like furnaces the arrangement and combination of inducing pipe and chambers
placed behind (and if desired under) the bridge substantially as described and
illustrated in the accompanying drawings.
Second-The arrangement and combination of apparatus for use as applied to
steam boiler or like furnaces as a means of consuming smoke and economising fuel
such as described and illustrated by the accompanying drawings.
Dated this 16th day of March 1889
POPPLEWELL, COLTON & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicant.