Improvements in Valves.
Year: 1896

page_text: Date of Application, 5th Mar., 1896
Complete Specification Left, 5th Jan., 1897-Accepted, 5th Mar., 1897
PROVISIONAL SPECIFICATION.
Improvements in Valves.
We WILLIAM WHEATLEY of 28 Chapel Street, Liverpool, in the County of
Lancaster, Managing Director of The Fourness Gas Process Syndicate Limited,
and GASTON KROS of Leigh in the County of Essex, Civil Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention relates to valves used principally in conduits for hot gases, and
has for its object to permit of the employment of suitable flexible seatings in such
valves, by which greater efficiency is in many cases obtained.
In carrying out our invention, in a valve chamber of any suitable form we
arrange à vertical dip pipe by which the gas may enter or leave the valve chamber
at the upper part, a bend or elbow being preferably formed at that part. The
valve spindle preferably passes down the dip pipe through a stuffing box in the
valve chamber top or in the elbow. A bucket is fixed to the valve spindle, by
which spindle, the bucket can be raised and lowered, sufficient space being
provided between the bottom edge of the dip pipe and the floor of the valve
chamber so that the bucket shall sufficiently clear the dip pipe when the valve is
required to be open. The spindle is surrounded with a sleeve to protect it from
the direct beat. In the bottom of the bucket is fixed a seating of indiarubber or
other suitable flexible material, and the bucket is then charged with water, a
drip pipe being preferably arranged above the bucket so that the water absorbed
by evaporation may be replaced. In the bottom of the valve chamber is
arranged a syphon drain pipe by which, liquor deposited in the chamber may be
removed.
Two or more of these valves may be conveniently arranged in one valve
chamber.
There is an orifice leading directly into the valve chamber by which the gas
leaves or enters.
The valve is opened and closed by raising and lowering the bucket by the
spindle aforesaid or by any other suitable means.
The water in the bucket prevents deterioration of the flexible seating by
direct heat.
The flexible seating may be clamped to the bottom of the bucket by a plate or
screw or may be otherwise secured in position.
Dated this 28th day of February 1896.
TRATTILADOR
Improvements in Valves.
We, WILLIAM WHEATLEY of 29 Chapel Street, Liverpool in the County of
Lancaster, Managing Director of The Fouruess Gas Syndicate Limited, and
GASTON KROS of Scheveningen in the Kingdom of Holland, late of Leigh in the
County of Essex Civil Engineer, do hereby declare the nature of this invention

page_text: and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
Our invention relates to valves used in conduits for hot gases especially for such
gases under high pressure, and our improvements consist in the arrangement or use
of a suitable yielding or elastic seating in such valves in combination with arrange-
ments for cooling said seating.
On the drawings appended hereunto
Figure represents in sectional elevation a valve in which our improvements are
applied and Figure 2 a top view or plan of the valve.
Figure 3 represents also in sectional elevation a similar valve of modified
construction and Figure 4 a plan of the same valve..
In the several views similar parts are indicated by like letters of reference.
Referring first to Figures 1 and 2 such valves consist of a chamber a in which a
conduit terminates in a dip pipe e whose annular rim c' forms a valve face.
A bucket d larger in internal diameter than the rim el is mounted centrally to the
dip pipe e upon a spindle d' which passes through a stuffing box d2 and is provided
with any suitable means for lowering the bucket clear of the annular face of the dip
pipe and raising it again until the face c¹ comes in contact with the bottom of the
bucket.
The valve chamber is provided with a second conduit e, a liquid supply pipe
and an overflow seal pipe g. The liquid supply pipe f is arranged so that the liquid
shall drip into the bucket. In the bottom of the bucket we dispose a yielding or
elastic washer which is preferably made of india rubber, so as to form a soft
seating or face for the valve. The central part of the washer is protected or
covered by a plate which with the washer his secured to the bottom of the
bucket preferably by the end of the valve spindle in the manner shown. The
cooling liquid drops from the source of supply through the drip or supply pipe f
into the bucket and thereby prevents the deterioration of the elastic washer by the
heat. The overflow from the bucket into the valve chamber is carried away
through the sealed overflow pipe g.
Figures 3 and 4 represent in two similar views a valve of modified construction
in which an inverted bucket or bell is used and a stand pipe & in place of the dip
pipe c hereinbefore referred to. The elastic or yielding washer h is of annular form
and seated round the stand pipe k and is held in position by a ring plate h¹ or by
other suitable means. The liquid drips into the chamber or casing a which is
provided with an overflow seal pipe g.
to
One of the conduits d and e serves as the inlet to the valve and the other for the
outlet. Preferably, when the gases are of high temperature, the conduit leading
directly into the bucket or bell is arranged for the inlet as the flexible washer is
somewhat protected by the plate h¹ and the cooling effect of the liquid round the
bucket or bell which is being constantly renewed from the supply pipe
compensate for evaporation. Moreover the time during which the valve is closed
against the passage of the hot gases is generally not sufficient for the evaporation
of the liquid enclosed within the bucket or bell. By this arrangement of yielding
or elastic seating or washer between the opposing faces of the valve a smaller valve
chamber than is usual with valves depending upon a liquid seal can be used as the
tightness of the valve when closed does not depend upon the depth of the liquid
seal, only sufficient liquid being required as is necessary to preserve the flexible
seating and to compensate for evaporation.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
1. In a valve the arrangement and use of a seating of yielding or elastic material
immersed in a liquid substantially as hereinbefore described and for the purpose set
fouth

page_text: 2. The improved construction of a valve for hot gases having one of the valve
faces provided with a yielding or elastic seating for the other face to bear against
immersed in a cooling liquid and provided with supply and overflow pipes for
renewing said liquid substantially as hereinbefore described and illustrated in and
by the drawings.
3. The improvements in valves substantially as and for the purpose herein before
set forth and illustrated in and by the accompanying drawings.
Dated this 4th day of Januar 1807
R. J. URQUHART,
57, Barton Arcade, Manchester, and 6, Clayton Square, Liverpool,
Consulting Engineer and Patent Agent.