Year: 1887

page_text: JOHN WESCOTT Paper Manufacturer Wokingham Berks do hereby declare MIC
nature of this invention to be as follows:-
This invention consists in the construction of Valves and their Seatings and
consists of a metal valve a in which is formed a grove on its face, as shown in Fig. 1.
The Valve Seating c is composed and constructed of metal wire gauze, India rubber
and Canvas placed in layers-the wire gauze being on the upper surface. This com-
bination thus forms a metalic and elastic surface, which is secured between the
flanges of the valve casing as shown in Fig. 1. The Valve a when forced down on
to the before mentioned Seating c forms a grove d which corresponds with the
grove 6 in the valve a and thus forms a perfect tight joint. The Valve casing I
preferably construct in two parts as shown in Fig. 1. so that the valve or its seating
can be easily and quickly removed if so desired.
Fig. 1. shows a section of valve on line A. B.
Fig. 2. shows a plan view of valve casing.
Fig 3 shows a plan view of valve seating.

page_text: COMPLETE SPECIFICATION.
Improvements in Steam or other Stop Valves.
I, JOHN WESCOTT, of Wokingham, Berkshire, Paper Manufacturers, 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 consists in the construction of Valves and their seatings whereby
they become absolutely steam tight under very high pressures and are not affected by
contraction or expansion, and consists of a Metal Valve in which a groove or grooves
is formed on its face. The Valve Seating is composed and constructed of Metal
wire gauze, India Rubber and Canvas placed in alternate layers, the wire gauze being
by preference on the upper surface, thus forming a combination of Metallic and
elastic surfaces which are secured between the flanges of the Valve casing and upon
the Valve being forced down on to the before mentioned seating forms or creates an
annular space, grove or grooves therein exactly corresponding to the grove or
grooves on and around the Valve face and thus forms and secures a perfectly tight
joint.
The Valve Case I construct in two or more parts, but preferably in two parts so as
to enable the Valve or its seating to be easily and quickly removed if so desired.
In the Drawing filed with the Provisional Specification illustrative of my Invention
Figure 1, exhibits a section of a Valve according to my Invention (taken on or
about the line A-B Figure 2). Figure 2, is a plan view of the Valve casing, and
Figure 3 exhibits a plan view of the Valve seating, in which the following letters
refer to like or corresponding parts relating to the special features of my Invention
wherein a, is the metal valve in which the grove or grooves bare formed on its place.
c, is the valve seating composed of alternate layers of metal, wire gauze, India Rubber
and Canvas or such like-similar and suitable material or materials; d, shews the
corresponding groove or grooves formed in the valve seating c, corresponding with the
groove or grooves & formed on the face of the Valve, and securely takes therein
forming a complete and perfect joint.
Having now particularly described and ascertained the nature of iny said Inven-
tion and in what manner the same is to be performed and illustrated the same,
I declare that what 1 claim is :-
Firstly. In the combination of Improved Steam or other Stop Valves, whereby I
secure the same as being ahoalutalu. 1:1.4

page_text: forming Valves with a groove, grooves or corrugations on their faces, and corre-
sponding therewith a like or similar groove or grooves or corrugations into which the
face of the valve takes the seating or portion of same being by preference composed
of Metal wire-gauze, India rubber, Canvas or other like or suitable material or
materials formed or placed, on the upper surface of the valve seating.
Secondly, wherein the advantages secured are ;-being not affected by contraction or
expansion, and having no scored surfaces or by the cutting action of steam are not
likely to "stick" or set-fast and will not require re-boring, surfacing or grinding
"
in the seats. Old Valve seats can be easily and quickly removed and new ones
replaced by my method.
ם
1
0011 1
TL
1000