Improvements in or connected with Apparatus for Heating Fluids.
Year: 1897

page_text: Date of Application, 1st July, 1897
Complete Specification Left, 30th Mar., 1898—Accepted, 20th May, 1898
PROVISIONAL SPECIFICATION.
Improvements in or connected with Apparatus for Heating Fluids.
I, ALEXANDER BELL, of Camborne, in the County of Cornwall, Schoolmaster, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in or connected with steam generators and
with other apparatus for heating fluids and has for its object to provide means
whereby economy in fuel, space and time is effected.
According to my invention I convey heat from a suitable source directly to the
liquid, steam or other gas to be heated or vapourized by conduction through a solid.
To this end I furnish the steam generator or other apparatus with bars, bolts, plates
or the like the said bars, bolts or plates being so arranged that one end of each bar
or bolt or one edge of each plate is in the furnace or flue of the generator or other
apparatus, that is to say in direct contact with the source of heat whilst the other
end is immersed in the water or other liquid or the gas to which beat is to be
conveyed.
In practice, in the case where I employ bolts or bars, a suitable arrangement
consists in securing together the ends of a number of bolts or bars which are exposed
in the furnace or flue and in reducing and screw threading the other ends so that
they may be held in position in the liquid or gas by saddles riveted to a plate or
plates through which the reduced screw threaded ends of the bolts or bars are
passed.
....
In the case where plates are used as the heat conducting medium, I advantageously
pass the said plates through and rivet them between the flanges of the boiler tube or
other vessel; the said plates being shaped at suitable places so as to permit of
cleaning. The portions of the plates which are situated in the furnace or other
source of heat and also the portions immersed in the liquid or gas may be provided
with one or more holes.
Dated this 1st day of July 1897.
2
"T
▸ Improvements in or connected with Apparatus for Heating Fluids.
.
I, ALEXANDER BELL, of Camborne, in the County of Cornwall, Schoolmaster, 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 improvements in or connected with steam generators and

page_text: with other apparatus for heating fluids and has for its object to provide means whereby
economy in fuel, space and time is effected.
According to my invention I convey heat from a suitable source: directly to the
liquid, steam or other gas to be heated or vapourized, by conduction through a solid.
To this end I furnish the steam generator or other apparatus with bars, bolts, plates
or the like, the said bars, bolts or plates being so arranged that one end of each bar
or bolt or one edge of each plate is in the furnace or flue of the generator or other
apparatus, that is to say, in direct contact with the source of heat, whilst the other
end is immersed in the water. or other liquid, or the gas, to which heat is to be
conveyed.
In practice, in the case. where I employ bolts, or bars, a suitable arrangement
consists in securing the ends of a number of bolts or bars so as to be exposed in the
furnace or flue and in reducing and. screw-threading the other ends: so that they may
be held in position in the liquid or gas by saddles riveted to a plate or plates through
which the reduced screw-threaded ends of the bolts or bars are passed.
In the case where plates are used' as the heat conducting, medium, I. advantageously
pass the said plates through, and' rivet them between, the flanges of the boiler-tube or
other vessel, the said plates being shaped at suitable places so as to permit of cleaning.
The portions of the plates, which are situated in the furnace or other source of heat.
and also the portions immersed in the liquid or gas may be perforated.
To enable the invention to be fully understood. I will describe it: by reference to the
accompanying drawing, in which.:-
Figure 1 is a transverse section through a boiler having my improvements. applied
thereto, the section only illustrating the boiler above the middle line of the flue:
Figure 2. is a longitudinal section:
Figures 3 and 4 are views similar to Figures. 1 and 2 respectively of the modification:
wherein conducting, plates are employed.
a is the boiler shell and 6 the flue. Referring first to the construction illustrated.
in Figures 1 and 2, c, c are the bolts. for conducting the heat from. the inside of the
flue to the water. contained in. the boiler a. The said bolts are formed at their inner
ends, that is to say, the ends which project into the flue b, with expanded or enlarged:
heads c¹, c¹, and they are reduced and screw-threaded at their outer ends, that is to
say, the ends which project into the liquid or gas to be vapourized or heated. d,dare
the saddles, the said saddles being formed of a plate or bar bent to the shape shewn,
that is to say, a succession of inverted V-s through the upper bend of each of which
one of the bolts passes, and e is another plate or bar through which the said screw-
threaded ends of the bolts. c are passed and which plate or bar rests upon the upper
bends of the saddles and is bolted thereto. by means of nuts. e¹, el upon the screw-
threaded ends of the bolts; c, c. This plate or bar e can. be secured to the boiler. ends
and serve as a stay therefor, and the bent plate or bar forming the saddles is riveted
to the flue casing.
In the arrangement shewn in Figures 3 and 4, the heat is directly conducted' from
the flue or furnace to the gas or liquid to be heated or vapourized, by means of
plates f, the said plates being arranged between the flanged ends of the flue sections
and riveted thereto. Each plate f, f at the part which projects inside the flue b has
its lower projecting portion diminished to facilitate cleaning, as is clearly indicated
in the figures, and is provided with perforations g, g in the part which projects into
the said flue 6 and with perforations. h, h. in the part which projects outside the said
flue, these perforations being provided so that the plates shall interfere with the
circulation of the fluid and of the furnace gases as little as possible.
In boilers or apparatus for heating liquids and gases having the above described
improvements applied to them, it will be obvious as above described, that the heat of
the gases in the furnace or in the flue of the said apparatus is directly conveyed,
through the medium of the bolts c or the plates f, into. the liquid or gas. to be
vapourized or heated so that thereby economy in fuel, space and time is effected.
It is to be understood that the arrangements for carrying out the invention shewn

page_text: in the accompanying drawing are only given as examples and that I do not confine
myself to the use of such arrangements.
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:
1. In apparatus for heating fluids, conveying the heat from its source to the liquid
or gas to be heated directly by conduction through a solid, substantially as herein-
before described and illustrated.
2. The improvements in apparatus for heating fluids, hereinbefore described and
illustrated respectively in Figures 1 and 2, and 3 and 4 of the accompanying.
irawing.
rawing.
Dated this 30th day of March 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.