IMPROVEMENTS IN APPARATUS APPLICABLE ΤΟ THE FURNACES OF BOILERS." STEAM
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by Aaron Mellor at the Office of the
Commissioners of Patents on the 7th March 1882.
AARON MELLOR, of the town and County of the town of Nottingham,
"IMPROVEMENTS IN APPARATUS APPLICABLE ΤΟ THE FURNACES OF
BOILERS."
STEAM
In carrying out my Invention, I utilize coal gas as fuel in conjunction with asbestos,
and an inflammable liquid, such as paraffin, petroleum, naptha, or any other
inflammable compound, in artificial furnaces, or liquid as fuel in ordinary coal
consuming furnaces.
My improvements are applicable to upright tubed boilers, as well as all ordinary
boilers, taking their bearing on their sides, whether with parallel tubes or with flues
and crossway tubes, and in the first place I close up all draught space below the
furnace, dispense with furnace bars, and place in their position a platform or bearer
of iron, or other suitable material above which, I place metallic piping side by side,
or in part circles, to cover or nearly cover the seating of the fire space, the pipes to
be perforated on the upper side, or with thoroughfare holes, the apertures to be of
the required size according to circumstances, as to extra power required, at the service
for gas supply, I place a pipe or pipes cross way of the furnace and connect it, or
them, up with T or other suitable joints to feed each pipe separately from the service
or, as an alternative means, I may arrange a blast either from a fan or any other
ordinary air compressing apparatus (connected with the engine) to pass under and
through the gas supply pipes in connection with a spraying apparatus, or separately
I arrange a series of vessels to stand through the gas pipe, either full or flush, at
the outlet of the gas flame, for the purpose of improving the heat of the gas jet.
I also apply the ordinary gas cock with a nozzle feed, inside a perforated pipe
through which the atmospheric air will pass to obtain combustion without undue
smoke, directly upon these pipes or over them, I place asbestos fibre or fuel (cubes
or blocks) in rows taking their bearing between, upon, or over the pipes, I build
upon these similar material, until I obtain a level surface of the required depth, care
to be taken to keep all outside air from the furnace.
In connection with the engine to be driven or operated by the steam generated,
I place a fan or an air pump or some equivalent instrument, compressing air into a

page_text: receiver or air vessel in a convenient position near the boiler, or it may be placed
in the interior thereof, or in other close position as a jacket, which may be heated
by either the exhaust steam, or by the boiler itself by contact, from the air vessel
I pass a pipe or tube through the boiler of a sufficient length to ensure the air
passing through it, to be highly heated, this pipe or tube will carry air into a cock
with a flattened outlet in a fan, or other suitable shape, like an ordinary gas burner.
I place a supply of inflammable liquor in a cask, or other receptacle in a sufficiently
lofty position that through an ordinary pipe of the required size, the contents of
the cask or holder will run to an outlet, on the level with the top of the furnace,
the outlet of the pipe I arrange inside the air pipe, and in position in front of the
cock, this arrangement will spray the liquor over the whole surface of the gas heated
asbestos, and immediately produce a flame of intense heat, the hot air for the spraying
will therefor aid combustion without depreciating the heating power. By such
means, I entirely dispense with a door being open, even in part to admit any cold
air whatever, the whole passing through either the gas apparatus or through the
heated air vessel, this will give an almost smokeless furnace, as well as only requiring
a minimum amount of attention by the attendant, and by a judicious adjustment
of the water supply for the boiler, an engine will run almost continuosly without
any further attention, except lubricating, if the fuel supply is kept up.
The hot air jet, and inflammable liquid spraying apparatus is applicable to ordinary
coal consuming furnaces.