Improvements in Gas Valves for Regenerative Furnaces.
Year: 1892

page_text: Date of Application, 20th Feb., 1892
Complet: Specification Left, 16th Nov., 1892-Accepted, 17th Dec.; 1892
PROVISIONAL SPECIFICATION.
Improvements in Gas Valves for Regenerative Furnaces.
1, JOHN BARR, of The Glenfield Company, Limited, of Kilmarnock, in the
County of Ayr; North Britain, Engineer, do hereby declare the nature of this
invention to be as follows, that is to say :-
My said invention has for its object to construct gas valves for regenerative
furnaces in an improved manner, and so as whilst being less costly than heretofore,
to be less liable to leakage.
The movable part of a valve made with my improvements consists of two circular
end disks formed with external journals and connected by a diametrical plate. The
valve box made with the usual four parts or ways has circular side openings closed
by covers which form internal recesses in which the end disks of the movable part.
fit and work. The edges of the diametrical plate are thickened and are turned
externally convex so as to fit and work within concave turned surfaces of the
narrow parts of the box which divide the four ports or ways from each other. All
parts which have to be in close contact and to be capable of moving easily are
turned work and inexpensively made with the necessary accuracy.
Dated this Nineteenth day of February 1892.
EDMUND HUNT,
Per pro D. Ferguson,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Gas Valves for Regenerative Furnaces.
I, JOHN BARR, of The Glenfield Company, Limited, of Kilmarnock, in the
County of Ayr, North Britain, 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, that is to say :-
My said invention has for its object to construct gas valves for regenerative
furnaces in an improved manner, and so as whilst being less costly than heretofore
to be less liable to leakage.
The movable part of a valve made with my improvements consists of two circular
end disks formed with external journals and connected by a diametrical plate, and
which are also fitted to work in internal recesses in the sides of the valve box. The
edges of the diametrical plate fit and work within concave turned surfaces of the
narrow parts of the box which divide the four ports or ways of the box from each
other.
And in order that my said invention and the manner of performing the same may
be properly understood I hereunto append a sheet of explanatory drawings, to be
hereinafter referred to, and showing an example of my improved valve for
regenerative furnaces.
Figure, 1, of the drawings is a side elevation and Figure, 2, is a sectional end
elevation.
Figure, 3, is a vertical section, and Figure, 4, is a horizontal section of my
improved valve.
In these drawings the same reference letters and numerals are used to mark the
same or like parts whenever they are repeated.
As shown in the drawings the movable part of my improved valve consists of two
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page_text: circular end disks, A, and B, formed with external journals, C, and, D, and con-
nected by a diametrical plate, A 1. To the outer end of the external journal, C, there
is fixed a weighted hand lever, E, the extreme positions of which are determined by
stops on the casing, and by means of which the valve can be turned so as to change
the direction of the currents of gases. The valve box made with the usual four ports
or ways, G, H, J, and, K, has circular side openings closed by covers, L, and, M,
bolted to the valve box and forming internal circular recesses in which the end
disks, A, and, B, of the valve loosely fit and work. The end disks, A, and, B,
instead of being circular may if desired be cut away as indicated by dotted
lines, A 2, in Figure, 3. The edges, N, of the diametrical plate, A. 1, are thickened
and are turned externally convex so as when the valve is in either of its extreme
positions to fit or nearly fit concave turned surfaces formed on the narrow parts, P,
of the box which divide the four ports or ways, G, H, J, and K, from each other.
All parts which have to be in close contact and to be capable of moving easily are
turned work and inexpensively made with the necessary accuracy.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
.
The improved gas valve for regenerative furnaces, having a movable part con-
sisting of two, or segments of two circular end disks, fitted to work in internal
recesses in the sides of the valve box, the two disks being connected by a
diametrical plate, the edges of which, when the plate is in either of its extreme
positions, fit or nearly fit concave turned surfaces, formed in the parts of the box
dividing the ports substantially as hereinbefore described.
Dated this Fifteenth day of November 1892.
EDMUND HUNT,
Applicant's Agent.