Improvements in the Reversing and Regulating Valves of Re- generative Gas Furnaces for Steel Melting and other Analogous Purposes.
Year: 1888

page_text: Date of Application, 1st Nov., 1888
Complete Specification Left, 7th June, 1889-Accepted, 20th July, 1889
PROVISIONAL SPECIFICATION.
Improvements in the Reversing and Regulating Valves of Re-
generative Gas Furnaces for Steel Melting and other Analogous
Purposes.
I ISAAC BEARDMORE of Lymington Lodge, Bothwell in the County of Lanark
Britain, Gentleman, do hereby declare the nature of this Invention to be as
follows:-
My Invention relates to improvements in reversing and regulating valves for
regenerative gas furnaces for steel melting or analogous purposes and has for its
object to protect the said valves from the deteriorating effects of the heat to which
the said valves are at times subjected by the highly heated air and gases, the direction
and flow of which the said valves are required to control.
In carrying out my said invention I prefer to employ a cylindrical valve in lieu
of the Butterfly Valve or tongue at present in use. The said cylindrical valvo has its
lower extremity cut away at an angle of 45° or at such angle as may under special
circumstances be found most convenient.
The cylinder forming the valve has double walls both on the sides and on the
bottom; the space between these walls I fill with water that is free to enter and flow
through the valve as it becomes heated; this space being open at the top allows the
gas pipe that leads the gas from the producer to dip into it, and form a water joint
between the valve and the pipe. The gas pipe has on its internal side at or near the
water joint a circular hood that causes the tar and other matter to drop into the valve
clear of the water joint.
To allow the gas to pass freely into the horizontal pipes leading to the furnace
1 have the space between the inner walls of the valve open at the top and I have a
corresponding opening in the lower portion of the valve through the double walls at
right angles to the centre line of the valve.
The outer wall is provided at the top with a flange projecting outwards that may
be carried by the top of the outer or main casing of the valve or it may be carried
on balls or antifriction wheels as may be most convenient.
The valve can be actuated by a lever or by any suitable kind of gearing.
To prevent the outer casing that contains the valve from warping I construct it
with a casing through which water is kept constantly circulating the flow being
regulated by an ordinary cock.
The exposed surface of the angled portion of the cylindrical valve may be further
protected by a coating or slab of some refractory material such as firebrick.
To actuate the valve it is simply moved round until the angled or lower end covers
or uncovers an opening in the outer casing.
The opening in the side wall of the valve, through which the gas enters is brought
opposite the other opening in the outer casing.
In cases where much tar is deposited on the valve or when from any cause the
valve is difficult to start, I arrange a cam-shaped path for the anti-friction rollers
that carry the valve so arranged that the valve is slightly lifted as it is moved from
right to left.
In cases where it is not found expedient to use a water joint at the junction of
the gas main with the valve, a sand joint may be used instead.
Dated this 31st day of October 1888.

page_text: COMPLETE SPECIFICATION.
Improvements in the Reversing and Regulating Valves of Re-
generative Gas Furnaces for Steel Melting and other Analogous
Purposes.
J, ISAAC BEARDMORE of Lymington Lodge, Bothwell, in the County of Lanark,
North Britain, Gentleman, 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 which relates to improvements in the reversing and regulating
valves of regenerative gas furnaces, for steel melting and other analogous purposes,
has for its object to protect the said valves from the deteriorating effects of the highly
heated air and gases, the direction and flow of which the valves are required to
control.
I will now proceed to describe my said improvements reference being made to the
accompanying sheet of drawings, Figure 1 of which is an elevation and Figure 2 a
sectional elevation.
In accordance with my Invention I employ a cylindrical valve A, having its lower
extremity or bottom: B, cut away or inclined, preferably at an angle of 15% though
in some cases I may use any other convenient angle.
The cylinder forming the valve is provided when casting with double walls a, b,
so as to form a water space or casing all round the said valve, and into which I
cause a free supply of water to enter and flow through, for the purpose of keeping
the valve cool, the said supply of water being regulated by any suitable means and
led in at any convenient part, the outlet or overflow being preferably the top of the
valve which is left open as at a'.-The said open end at the same time allowing the
end of the gas pipe C, that leads the gas to the valve from the producers, to dip
into the water, and thus form a very efficient water joint between the valve and the
pipe, and to prevent any tar or other matter from fouling the said water joint, I
mount inside of the gas pipe C, a suitable shaped hood D, thus causing any tar or
other matter to drop into the valve, clear of the water joint.
For allowing a free passage of the gas through the said valve I provide it with an
opening top and bottom, the top opening E, for the inlet of the gas being formed by
leaving the top end open, and the bottom opening F, being formed on its deepest
side for the outlet of the gas. The bottom opening F, being so formed as to
correspond with the openings in the valve casing, and at right angles to the centre line
of the valve.
To protect the valve casing G, from the heat and thus prevent it from warping, I
construct it as a hollow water casing, the flow or supply of water being obtained from
the overflow of the valve A, entering in at its top 9, the said top being left open in
casting, and the said casing G, is also provided at any convenient part with an outlet
opening H.
To enable the valve to be actuated I form the outer wall b, of the valve with a
projecting rim or flange b', at its top, the said flange being carried on a corresponding
flange formed on the top of the inner wall of the casing G, or as shewn I may form
a race or groove on the top sido of the casings' flange gl; and a corresponding race
or groove on the underside of the valves' flange b¹, and into which I place a suitable
number of balls J, or antifriction rollers or wheels as may be desired-the effect
being such that the casing thus bears the weight of the valve, at the same time leaving
it free to revolve or partially revolve when required. The said revolving or partially
revolving of the valve being for the purpose of opening or shutting, reversing or
regulating the flow of the gas, and is obtained by means of casting on the valve (or
mounting it on in any convenient manner) a spur or toothed segment or quadrant K,
into which I cause a spur or toothed pinion, L, to work, the said pinion being held
in its proper position by any suitable means, and turned by means of a hand wheel
or lever keyed on the top end of its shaft / or I may actuate the said valve by
a suitable lever or its equivalent.

page_text: The exposed surface B, of the valve may be further protected from the action of
the heat by coating or covering it with some refractory material such as fire brick or
any suitable material.
The circulation of water in the valve and the casing being such that the water
is supplied to the valve and after passing through which, it overflows and drops into
the casing, then circulates through it, and thence out by the overflow pipe or
opening H.
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
In reversing and regulating valves for regenerative gas furnaces and analogous
purposes, the general arrangement and construction of a water-cased valve A, and
outer water casing G, of cylindrical shape, the said valve having its bottom B, cut
away at a suitable angle, all substantially as and for the purposes hereinbefore
described and shewn in the accompanying drawings.
Dated this 6th day of
1000
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.