Improvements in Liquid-sealed Valves for Air and Gases.
Year: 1896

page_text: Date of Application, 14th Jan., 1896
Complete Specification Left, 14th Nov., 1896-Accepted, 19th Dec.. 1896
VISIONAL
ECIFICATION.
Improvements in Liquid-sealed Valves for Air and Gases.
I JOHN WILLIAM WAILES of Ponteland, near Newcastle-on-Tyne, in the County
of Northumberland, Engineer, do hereby declare the nature of this invention to be as
follows:-
The invention relates to liquid sealed valves mainly for directing and controlling
the flow of air and gas, or either of them and specially applicable to furnaces either
as stop valves, reversing valves, or directing valves.
The object is to provide simple and efficient valves with a water or liquid seal
accessible from outside of the valve case, or valve chest, or open to the atmosphere so
that the sealing liquid is exposed to view, and the parts may be readily cleaned and
kept in order from the outside even whilst the furnace is at work.
A valve under my invention consists of a cup or equivalent device attached to a
spindle, the free edges of the cup dipping into an annular trough forming part of the
valve-case on one side of the valve, the valve case on the other side of the valve
dipping into the annular trough outside the cup or its equivalent. Each portion of
the valve case is provided with a gas or airway. Two or more cups or valves may be
attached to the one spindle or so as to move together, or one or more valves may be
attached to a sleeve or sleeves around the spindle so as to move separately.
The valve case is divided into as many sections as there are valves.
The valve casing and other parts are lined or coated with heat resisting material
where required.
Water or liquid connections are used to maintain the liquid in the trough.
Improvements in Liquid-sealed Valves for Air and Gases.
I JOHN WILLIAM WAILES of Ponteland, near Newcastle-on-Tyne, in the County
of Northumberland, 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 invention relates to liquid-sealed valves mainly for directing and controlling
the flow of air and gas, or either of them and specially applicable to furnaces either as
stop valves, reversing valves, or directing valves.
The object is to provide simple and efficient valves with a water or liquid seal
accessible from outside of the valve case or valve chest or open to the atmosphere so
that the sealing liquid is exposed to view, and the parts may be readily cleaned and
kept in order from the outside and tar and other deposits and obstructions removed even

page_text: whilst the furnace is at work. A further advantage being that the minimum of liquid
area is exposed to evaporation.
A valve under my invention consists of a cup or equivalent device attached to a
spindle, the free edges of the cup dipping into an annular trough forming part of
the valve case on one side of the valve, the valve case on the other side of the valve
dipping into the annular trough outside the cup or its equivalent. Each portion of
the valve case is provided with a gas or air way. Two or more cups or valves may
be attached to the one spindle or so as to move together, or one or more valves may
be attached to a sleeve or sleeves around the spindle so as to move separately.
The valve case is divided into as many sections as there are valves."
The valve casing and other parts are lined or coated with heat resisting material
where required.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side view, half being in elevation and half in section of two pairs of
liquid-sealed valves constructed in accordance with my invention for controlling the
flow of air and gases to and from a furnace.
Fig. 2 is an end view half being in elevation and half in section; and Fig. 3 is
a plan of a pair of liquid sealed valves constructed in accordance with my invention.
The main difference between the valves shown in Fig. 1 and those in Figs. 2 and 3
being, that in Fig. 1 both valves are lifted centrally, whilst in Figs. 2 and 3 the lower
valve is shown lifted by means of side rods. In all the views the same letters denote
like or equivalent parts.
In the drawings there being two valves one over the other, the valve case or chest
is made in three portions a, a, a². b, b1, b2 are ways leading one from each portion of
the valve case or valve-chest. When used with a regenerative furnace the ways b
would lead to the chimney or waste gas flue b' to the regenerators, and 62 to the gas
or air flue. If three valves were used one over the other, the valve case or chest
would be in four portions. The upper edge of the lowest portion a of each valve case
or chest is made with an annular channel or trough c for containing water or other
liquid, and the upper edge of the middle portion a¹ of each valve case or chest is made
with an annular channel or trough c¹. The top portion a² of each valve case or chest
is made with a lip d², which dips into the liquid in the channel or trough c' of the
central portion af of each corresponding valve case or chest. Each central portion a¹
is made with a lip d' which dips into the liquid in the corresponding channel or
trough c, of the bottom portions à of the valve cases or chests. The three portions
of each valve case or chest are held in position relatively to each other by lugs and
bolts e. ff, are the valves. The valve f is shown closed or sealed, and the valve fi
open. The said valves are made with lips 1, f, which dip into the liquid in the
channels or troughs c, c'.
Referring to Figure 1, g, are hollow stems attached to the valves f¹. The said
stems pass through stuffing-boxes h on the top portions a² of the valve cases or chests.
i are rods attached to the valves. The said rods i, pass through the hollow stems g,
and also through the stuffing boxes j on the said hollow stems. k is a system of levers
and connecting rods for actuating the valves here shown as reversing valves for a
regenerative furnace. Any usual or suitable valve operating gear may be used.
Referring to Figs. 2 and 3 the valve f¹ has a rod instead of a hollow stem, and the
valve is made with lugs to which are attached rods i. The rods ¹ pass through
stuffing boxes on the middle portion a¹ of the valve case or chest.
Instead of the valves being secured to rods and operated as lift valves, such valves
may if desired be arranged to be operated as flap valves.
It will be seen that the minimum of space between the lips d' d' and inner edges
of the channels or troughs c, c', is exposed to the evaporative action of the air and
gases, and that easy access from the outside may be obtained to the sealing and
acting portions of the valves through the channels or troughs c, c'.

page_text: To compensate for any evaporation of the liquid or water, a supply pipe and taps m
Cre used. n, are overflow pipes. Covers may be provided for the channels or
troughs c, c' outside the valve cases or chests if desired.
An important advantage of my invention is, that the valves above described can
be applied to existing furnaces without any alteration of existing flues.
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 :-
First. Valvular apparatus consisting of a case divided horizontally into two, one
section making joint with the next section by dipping into an annular liquid con-
taining ring or trough and each section having a way for the inflow or outflow of
air or gas in combination with a valve also dipping into the annular ring or trough
when closed or sealed.
Second. The combination of the valve case or chest a, al a, ways b, b1 62,
channels or troughs c, e', connections e, valves f. f¹ and actuating devices substantially
as set forth.