IMPROVEMENTS IN HEATING APPARATUS CONSISTING IN PART OR ENTIRELY OF PIPES OR TUBES THROUGH WHICH HOT WATER IS CAUSED TO PASS to be as follows
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I WILLIAM POORE of N° 155 Cheapside in the City of London Manufacturer
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
HEATING APPARATUS CONSISTING IN PART OR ENTIRELY OF PIPES OR TUBES
THROUGH WHICH HOT WATER IS CAUSED TO PASS to be as follows:
"
My invention relates to apparatus of the kind known as heating coils and to
other heating apparatus which consists in part or entirely of pipes or tubes through
which heated water is caused to pass the heat from the water so passing being
radiated from the surfaces of the pipes or tubes into the atmosphere surrounding
them and the objects of my said invention are to obtain a greater surface for
radiation of heat without increasing the diameter of the pipes or tubes and to
decrease the sectional area of the water passages whereby the quantity of water
required in the apparatus is reduced.
According to my said Invention I arrange within the said tubes other tubes of
smaller diameter the difference of diameter of the outer and inner tubes and the
arrangement of the latter within the former being such that an annular space is
enclosed between them which space constitutes the passage for the heated water
the heat of which is consequently radiated from the inner surface of the inner tube
as well as from the outer surface of the outer tube.
The inner tube is open at the ends in order that the air which is heated by
radiation therefrom may pass freely through and from it: In the case of long
water tubes or pipes I connect short branch tubes to the inner tube at intervals
which branch tubes pass through and are secured at their outer ends in apertures
in the outer tubo and admit of air entering and leaving the said inner tube
without passing through its whole length. The junctions between the said branch
tubes and both the outer and inner tubes are made watertight to prevent the
escape of water from the annular space enclosed between the said outer and inner
tubes.
Dated this twentyfifth day of August 1884

page_text: This arrangement is illustrated in Figures 4, 5 and 6 of the accompanying
drawing Figure 4 being an elevation of portions of a heating flue having a central
air fluo and Figure 5 a transverse section taken on the line 1 Figure 4 and Figure 6
a central longitudinal section of the same. gg are the outer tubes hh the inner
tubes and ii the branch tubes herein before referred to which are securol at their
inuer ends in apertures in the tube h and at their outer ends in apertures in the
tube g. The apparatus is connected to the water heater by the pipes e e¹ and the
heated water circulates in the annular spaco j between the tubes g h and air passes
through and from the tube has indicated by the arrows.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
First The construction or arrangement of the apparatus heroinbefore described
with reference to and illustrated in Figures 1, 2 and 3 of the accompanying drawings.
Secondly The construction or arrangement of the apparatus hereinbefore
described with reference to and illustrated in Figures 4, 5 and 6 of the
accompanying drawings.