improvements in Steam Generators and superneaters.
Year: 1886

page_text: improvements in Steam Generators and superneaters.
I HENRY EDWARD NEWTON of the Office for Patents, 6 Bream's Buildings,
Chancery Lane, in the County of Middlesex, Civil 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:---
The object of this invention is to provide a simple and inexpensive apparatus
which may be employed either as a steam generator for heating dwellings and other
buildings by steam, or which may be employed as a steam super-heater.―This
apparatus, when employed as a steam generator, has the advantage that it will be
'safe in its operation, and will require very little attention; and when used either
as a steam generator or super-heater, it has the advantage that it will not soon burn
out and require renewal.
The invention consists essentially in the combination with an imperforate steam
generating or super-heating coil, of a receptacle containing lead or other easily
fusible metal or other heat-transmitting medium in which the coil is directly
immersed, with the heat transmitting medium in direct contact with its imperforate
surface, and a furnace for supplying heat to the exterior of the receptacle.
The heat-transmitting medium may be of any material which will transmit,
uniformly, to all parts of the steam generating or super-heating coil immersed in
it, the heat received from the receptacle in which the medium is contained.
The accompanying drawing represents a sectional elevation of an apparatus
embodying the invention.
A, designates a steam-generating or super-heating coil of pipe, which is immersed
directly in lead or other fusible metal or heat-transmitting medium B, the said heat-
transmitting medium being in direct contact with the convolutions of the coil.
C, designates a receptacle represented as made in the form of a pot-like vessel,
which is of sufficient size to contain the coil, A, and the lead or other heat-trans-
mitting medium in which it is immersed. This vessel may have, at the upper
edge, a flange, c, whereby it is supported on a brick structure forming a heating
chamber, D, within which the vessel or receptacle, C, depends. The vessel or
receptacle, C, may be closed by a cover, C³, fitting loosely thereon, in order to
PD.

page_text: prevent the rapid ozidation of the lead, if such metal be used as the heat-trans-
mitting medium, and also to prevent dirt and other foreign matters from dropping
into the receptacle.
In this example of the invention, the furnace, E, whereby heat is imparted to
the receptacle, C, the lead or other heat transmitting medium, B, and to the coil, A,
is external to the heating chamber, D, and communicates therewith by a throat or
opening, e. The furnace in which is the usual grate, e¹, is provided with fire and
ash-pit doors, e², e, and the products of combustion from the furnace, after passing
through the chamber, D, and heating the receptacle or vessel C therein, escape at
the smoke outlet, d.
In order to support the receptacle C at the centre, a brick pier or support f
may be employed, through which a pipe f¹, may be extended, and when desired,
the lead or other fusible metal, if such be used as the heat transmitting medium, 'B,
may be withdrawn from the receptacle through the pipe f¹.
It will be observed that the lead or other heat-transmitting medium is in direct
contact with most, or all, the convolutions of the coil, A, the latter being immersed
in it, and hence the heat transmitted to the coil, A, will be uniform, and no injury
will result to the coil by lack of attention on the part of the person in charge.
Hence such a construction of steam generating apparatus will be very desirable
for private dwellings and other buildings, and the same apparatus is of great value
as a steam super-heater, because it will not soon burn out and require renewal, as
do the super-heaters now generally in use.
It will be understood that the steam-generating or super-heating coil, A, is
imperforate, and hence no water or steam which may be contained in or passing
through the coil can escape into the heat-transmitting medium, and it is therefore
not essential that the receptacle, C, should be tightly closed, or even closed at all,
because it never contains any free steam.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to
me from abroad by my foreign correspondent, I declare that what I claim is :-
The combination with an imperforate steam-generating or super-heating coil, of
a receptacle containing a heat-transmitting medium in which the coil is directly
immersed, with the said medium in direct contact with its imperforate surface, and
a furnace for applying heat to the exterior of said receptacle; substantially as
herein described and for the purpose set forth.
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