Improvements in and relating to the Consumption or Prevention of Smoke in Steam Boiler and other Furnaces.
Year: 1897

page_text: Date of Application, 4th Oct., 1897-Accepted, 20th Nov., 1897
COMPLETE SPECIFICATION.
Improvements in and relating to the Consumption or Prevention of
Smoke in Steam Boiler and other Furnaces.
We, WILLIAM RENNIE, Engineman, of 300 Springburn Road, and WILLIAM
MUIR, Manager of Spelter House, Hutchison Street, Maryhill, both in the County
of the City of Glasgow, do hereby declare the nature of our Invention and in
what manner the same is to be performed to be particularly kdescribed and ascer-
tained in and by the following statement, that is to say :-
This Invention has reference to improvements in and relating to the consumption
or prevention of smoke in steam boiler and other furnaces.
As applied to a land boiler fitted with a usual main central fire flue Z¹ leading
to back of boiler Z return bottom flue Z leading to front of boiler and exit side
flues A leading to chimney, we would preferably apply our improved feed of
petroleum or other oil or gas at the entrance to exit flue at front of boiler.
And in order that our said Invention and the manner of carrying same into
practice may be properly understood we have hereunto appended an explanatory
Drawing in which Figure 1 represents a longitudinal section and Figure 2 a
transverse section of part of a boiler having our improvements shown as fitted
within the exit flues A, while Figure 3 represents a detached view of the oil or
gas and air nozzles.
Referring to said drawing:-
We fit a pipe A' with kneed end As over suitable supports A within the exit
flues A of boiler Z, and to the kneed part. A³ we adjustably screw or fit a dish
shaped cast metal box or vessel B in front of the firebrick bridge B¹.
Within the pipe A¹ we fit a tube a leading to a nozzle apparatus al located in
kneed part A of pipe, and within this nozzle apparatus a we adjustably screw a
tapered tube a², for regulating the quantity of fluid which shall pass from tube a
into nozzle, and for permitting a supply of air to pass up through its open centre
part. Petroleum or other oil would be fed from an overhead cistern to the tube a,
which would be fitted with a cock or valve ³, or instead of oil a suitable com-
bustible gas may be substituted.
Orifices would be formed at front of boiler Z for the entrance of air to the
pipe A to supply the necessary combustion for the oil or gas in the kneed part A³
where ignition would take place.
By this means the supply of oil or gas would by the suction action within the
flue A be drawn up the kneed part A3 and heating box B, into the flues A, and
combine with the gaseous products of combustion to raise their temperature and
so consume the gases, and prevent the emission of smoke.
A pipe C which may be fitted with a valve would preferably be fitted at front
of each flue A to give an additional supply of air.
Instead of leading the oil supply by gravity it may be forced by pressure, and
the central tube in nozzle apparatus instead of receiving its air supply from
the pipe A may have air under pressure led by a tube to it.

page_text: Having now particularly described and ascertained the nature of our Invention
and in what manner the same is to be performed we declare that what we
claim is
First. In steam boiler and other furnaces the method of supplying oil or gas
and air and effecting combustion so as to consume or prevent the emission of
smoke, substantially as herein described in reference to and shown in the
accompanying drawings.
Second. In steam boiler and other furnaces, the arrangement and combination
of devices for supplying oil or gas and air, substantially as and for the purposes
herein described in reference to and shown in the accompanying drawings.
Dated the 2nd day of October 1994.
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.
97.
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.