A Method of and Means for Consuming Smoke thereby Economising Fuel.
Year: 1888

page_text: COMPLETE SPECIFICATION.
A Method of and Means for Consuming Smoke thereby Economising
Fuel.
I, RICHARD HENRY MICHELL of Helford Villa, Redruth in the County of
Cornwall, Engineer, 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 method of and means for consuming smoke and thereby
economising fuel and also comprises certain improvements on the invention secured
to me by Letters Patent No. 10861 of 1887. In the Specification of the said patent
it is stated that the combustible and incombustible gases generated in a furnace or
other fire-place are separated by means of a pivotted damper or separator.
Now by my present invention the gases are separated by perforations in the outer
case of the fan or other exhauster the lighter gases being forced into the fire whilst the
heavier gases taken from the periphery of the exhauster by the perforations are either
directly forced up the chimney, or are first forced through flues, around the outside
of the boiler, or into flues within the boiler for the purpose of utilizing a part of their
heat before forcing them up the chimney. Or I use the fan or other exhauster,
simply for the purpose of forcing the whole of the gases directly up the chimney, or
I first force them through flues, around the outside of the boiler, or into flues within
the boiler, for the purpose of utilizing a part of their heat and afterwards force them up
the chimney. The result of the exhaustion will be, the production of a partial vacuum
which will materially increase the combustion of the fuel and gases at the back of the
furnace by drawing air through the fire to mix with them.
By this forcing of the gases up the chimney, a smaller outlet or chimney would be
required than would suffice to allow the gases to issue therefrom and create a sufficient
draught in the ordinary manner.
The action of the "Fan "is to be continuous compelling the gases to travel as
aforementioned and by exhaustion causing a partial vacuum which in its turn is
replaced by air from between the firebars or otherwise let into the fireplace, thereby
greatly accelerating the combustion of the gases just before leaving the fire.

page_text: The invention will be well understood by reference to the accompanying drawings,
in which Figure 1 is an elevation, shewing a fan with perforations in the case at E
for taking off the heavy gases. These gases are either discharged direct into the open
air by the chimney A, or led around the boiler in the flues B and afterwards discharged
through the chimney B. Figure 2 shews the fan used simply as an exhauster. In
this figure the flues D are shewn going through the water in the boiler, and tho gases
discharged by the chimney D', or they may be discharged direct by the chimney C.
In each figure the alternative directions of the gases is shewn by the arrows.
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 :-
1st. A fan or other exhauster with a perforated outer case, to mechanically separate
the combustible from the incombustible gases, generated in a furnace or other firo
place substantially as and for the purpose herein before set forth and illustrated in
Figure 1.
2nd. A fan or other exhauster for the purpose of increasing the combustion of the
fuel and gases, generated in a furnace or other fire place, substantially as hereinbefore
set forth and with the object specified and illustrated in Figure 2.
Dated this 5th day of November 1888.
'
CASTLE SMITH,
Per F. W. Golby,
"Invention" Office,
54, Fleet Street, London, E.C.,
Agent for the Applicant.
CASTLE SMITH,
Per F. W. Golby,
Invention" Office,
54, Fleet Street, London, E.C.,
Agent for the Applicant.