Improvements in or connected with Means or Apparatus for Heating Metals by Liquid or Gaseous Fuel.
Year: 1891

page_text: Date of Application, 31st July, 1891
Complete Specification Left, 30th Apr., 1892--Accepted, 4th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Means or Apparatus for Heating
Metals by Liquid or Gaseous Fuel.
I, GEORGE RODGER, of 3 Christ Church Road, Sheffield in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has mainly reference to the heating of metals (or other substances)
by the flame and heat resulting from the combustion of an oil spray or oil gas
spray, directed onto or about the metal or thing to be heated, it being, however,
also applicable to heating by other gaseous fuel, and particularly those containing
hydrocarbons.
According to this invention, the air, or a greater portion thereof, used to
support combustion of the oil or gas used, is heated prior to its coming into
contact with the oil spray or gas, the heat being obtained from the flame or heat of
combustion.
In one arrangement, I provide about the burner and part of the flame, sheet iron
or other metal plates, so disposed that a current of air passes up into the burner
through a conduit or conduits formed by said plates, the plates being heated by
the flame or product of combustion and imparting its heat to the air used to
support combustion. There may be used in connection with these plates, other
plates so as to control the current of air and act in connection with the flame
From the above, it will
and make the apparatus operate in the desired manner.
be seen the heating apparatus is a regenerative one. In lieu of plates being used
in the regenerator, pipes may be employed.
In cases where the invention is applied to heat or keep hot bodies of metal
in suitable vessels, as in the case of heating them for the purpose of running
molten metal into interstices or holes in such metal, or for other purposes, the
apparatus, that is the burner, must be so placed as to direct the flame down-
wards onto the metal and into the vessel. In such a case also, or in analogous
cases, the metal plates or tubes of which the air heating conduits are made may
be constructed so as to form a base or feet on which the apparatus may rest,
and carried up on the upper part to deliver the heated air, as required.
In one arrangement, this apparatus or burner is mounted on a swinging frame
or column so that the flame may be moved onto and off the object to be heated,
or to any desired spot.
In the case of oil being used as the fuel, it may be employed in such a manner
that it is vapourized in tubes heated by the heat of its combustion and delivered
as a vapour from the jet. In another arrangement it may be supplied in a
pulverized state. Air compressed by a hand pump or mechanical means may
be adapted to feed or supply the oil to the burner.
It is to be understood that this invention is not confined to the particular form of
regenerative heating apparatus herein described, as the regenerative parts may
be made in any suitable convenient way or form; and any suitable form of
burner proper may be employed. It may also be used or applied to and in
various metallurgical heating operations and apparatus; and further different kinds
of gaseous and liquid fuel may be used in connection with it.
In the application of the invention to the heating of bodies of metal, (more
especially when cool,) by hydrocarbon or oil flame, the effect produced is that a high
temperature can be imparted to the metal without the deposition thereon of carbon.
Dated this 30th day of July 1891.
CHEESBROUGH & ROYSTON,
15, Water Street, Liverpool, Applicant's Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Means or Apparatus for Heating
Metals by Liquid or Gaseous Fuel.
I, GEORGE RODGER, of 3 Christ Church Road, Sheffield, in the County of York,
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 has mainly reference to the heating of metals (or other substances)
by the flame and heat resulting from the combustion of an oil spray or oil gas
spray directed onto or about the metal or thing to be heated, it being, however,
also applicable to heating by other gaseous fuel, and particularly those containing
hydrocarbons.
According to this invention, the air, or a greater portion thereof, used to support
combustion of the oil or gas used, is heated prior to its coming into contact with
the oil or vapour spray, or gas, the heat being obtained from the flame or heat
of combustion.
In one arrangement, I provide about the burner and part of the flame, sheet iron or
other metal plates, so disposed that a current of air passes up into the burner through
a conduit or conduits formed by said plates, the plates being heated by the flame or
product of combustion and imparting its heat to the air used to support combustion.
There may be used in connection with these plates, other plates so as to control the
current of air and act in connection with the flame and make the apparatus operate
in the desired manner. From the above, it will be seen the heating apparatus is a
regenerative one. In lieu of plates being used in the regenerator, pipes may be
employed. In cases where the invention is applied to heat or keep hot, bodies of
metals in suitable chambers or vessels, as in the case of heating them for the
purpose of running molten metal into interstices or holes in such metal, or for
other purposes, the apparatus, that is the burner, must be so placed as to direct the
flame downwards onto the metal and into the vessel. In such a case also, or in
analogous cases, the metal plates or tubes of which the air heating conduits are
made may be constructed so as to form a base or feet on which the apparatus
may rest, and carried up on the upper part to deliver the heated air, as required.
In one arrangement, this apparatus or burner is mounted on a swinging frame
or column so that the flame may be moved onto and off the object to be heated,
or to any desired spot.
In the case of oil being used as the fuel, it may be employed in such a manner
that it is vapourized in tubes heated by the heat of its combustion and delivered as
a vapour from the jet. In another arrangement it may be supplied in a pulverized
state. Air compressed by a hand pump or mechanical meaus may be adapted to
feed or supply the oil to the boiler.
It is to be understood that this invention is not confined to the particular form
of regenerative heating apparatus herein described, as the regenerative parts may
be made in any suitable convenient way or form; and any suitable form of burner
proper may be employed. It may also be used or applied to and in various
metallurgical heating operations and apparatus; and further different kinds of
gaseous and liquid fuel may be used in connection with it.
In the application of the invention to the heating of bodies of metal, (more
especially when cool) by hydrocarbon or oil flame, the effect produced is that
a high temperature can be imparted to the metal without the deposition thereon of
carbon.
In the drawings hereto annexed I shew one example of apparatus constructed
and adapted to operate according to the invention the nature of which is above set
forth. In this drawing, a represent the oil heating and vapourizing tubes, and
b the vapour discharge nozzle, of a burner constructed and adapted to operate after

page_text: the well known vapour burners of the "Wells" and other types; whilst c is the
oil reservoir, and d the oil supply pipe thereof, which may be a swivelling type,
and telescopic, if desired. e, f, and h are plates between which the air, or a large
proportion of the air used to support combustion of the vapour, passes and by
which it is heated, the lower one e, of these plates supports the burner by the ring k,
which rests in the downwardly coned part of said plate as shewn.
In the example illustrated, the burner, by its lower plate e, is shewn supported
on a brickwork wall 1, having upon its upper course, some interspaced bricks 1,
between which the waste gases of combustion pass out of the chamber enclosed by
said wall. Within this chamber the object to be treated (which in this instance
is a crank m, it being heated for say the purpose of being shrunk onto a shaft)
is placed. In a similar way any other metallic objects may be heated for any
desired purpose. It will be plain a wrought or cast metal base or refractory
lined metal base may be used in lieu of a brick one, if desired.
In action the flame issuing from the ring k, passes down into the chamber
within the wall and plays upon the object to be heated, and then up and out
of the spaces between the bricks . In its upward direction it strikes and passes
over the lower plate e which becomes highly heated thereby, and the radiant
heat from e heats the plate. The heat of these plates causes air to pass up
through the spaces between e and f, and fand hand being subjected to the heat
of the plates it becomes heated, and is then induced and drawn down by the
action of the vapour or gas jet and flame into the burner, and mixes with said
vapour or gas and produces a very hot flame. When using hydrocarbon vapour
or gas and heating bodies of metal by the hot flame produced as described, no.
carbon is deposited on such metal. The immunity from carbon deposit, in many
cases in which bodies of metal have to be heated or re-heated, is a great advantage,.
if not a necessity.
As above stated, the invention is not confined to the particular construction or
arrangement of burner and parts and applications above set forth with reference
to the drawing, but may be modified in different ways (such as for instance in the.
manners hereinbefore referred to) and also to suit different conditions of its appli-
cations, without departing from the main or essential features thereof.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The herein described means for heating metals, that is to say, means consisting
of a burner adapted to throw or project a flame, and conduits by or through which
the fuel at the burner is supplied with air to support combustion thereof, said
conduits and the air passing therethrough being heated by the heat of combustion
of the fuel and air.
2. Apparatus for heating metal, having its parts constructed and adapted to.
operate as a regenerative burner; substantially as herein set forth, and as specified.
with reference to the drawing.
ليوم
1
A1002
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicant's Patent Agents.