Improvements in Valves for Steam and other Engines.
Year: 1895

page_text: Date of Application, 2nd Apr., 1895
Complete Specification Left, 7th Sept., 1895-Accepted, 12th Oct., 1895
PROVISIONAL SPECIFICATION.
Improvements in Valves for Steam and other Engines.
JAMES SMITH of 4 Hannah Street, Cardiff, Engineer and OLIVER WYNN of
13 Clare Road, Cardiff, Engineer, both in the County of Glamorgan, do hereby
declare the nature of this invention to be as follows:-
The object of this invention is to provide a valve with two or more ways & to
obviate the use of packing in the valve spindle.
The valve itself is made in the form of a revolving disc with apertures in its
face communicating with the ports in the valve chest. Any number of ports can
be employed according to the number of inlet & outlet pipes required. The valve
spindle revolving the disc valve has a square or its equivalent made upon it for
this purpose.
A round part is made beyond the square, passing into a corresponding opening
in the valve chest, the lower part of the aperture can have steam admitted to it if
necessary for the purpose of lifting upwards the valve & its spindle so as to
relieve the pressure on the valve face.
The spindle above the valve passes through the valve chest cover, which has a
seat formed in its inner face, the valve spindle having an enlargement forming a
mitred valve engaging with this seat, the pressure of steam under the valve
spindle as before mentioned keeping this mitre on the spindle up against its seat
& thus preventing the escape of steam in that direction, the spindle then passing
out through a gland, which slides upon the projecting piece usually called the
stuffing box. In the recess usually occupied by the packing I place a spiral spring
pressing up against the gland or cap which in its turn presses up against a hand
wheel or its equivalent, adjusting nuts being placed at the outer end of the spindle
for screwing down the hand wheel & cap upon the spiral spring, in order to ensure
the mitre face of the valve spindle shall be up against its seat.
Suitable stops
being put on the hand wheel & the valve chest cover for ensuring the apertures in
the valve being in the required positions.
Dated this 1st day of April 1895.
JAMES SMITH.
OLIVER WYNN.
Improvements in Valves for Steam and other Engines.
We JAMES SMITH and OLIVER WYNN, of No. 4 Hannah Street, Cardiff, in
the County of Glamorgan, Engineers, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :—
The object of this invention is to provide a valve with two or more ways and
to obviate the use of packing in connection with the valve spindle. The latter is
made in the form of a revolving disc with apertures or ports in its face and they
communicate with similar ports in the valve chest.

page_text: Any number of ports can De employed according to the number of met or
outlet pipes required.
The valve spindle revolving the disc valve has a square or its equivalent upon
it for this purpose. A round part is made beyond the square passing into a
corresponding opening in the valve chest. The lower part of this aperture can
have steam admitted to it if necessary for the purpose of lifting the valve and
its spindle, so as to relieve the pressure on the valve face. The spindle above the
valve passes through the valve chest cover which has a seat forined on its inner
face, the valve spindle having an enlargement forming a mitred valve engaging
with this seat. The pressure of steam under the valve spindle as before mentioned
keeps the mitre on the spindle up against its seat and so prevents the escape of
steam in that direction. The spindle passes out through a gland which slides upon
the projecting piece usually called the stuffing box. In the recess usually occupied
by the packing, we place a spiral spring adapted to press up against the gland or
cup, which, in its turn, presses up against a hand wheel or its equivalent. Adjusting
nuts are placed at the outer end of the spindle for holding down the hand wheel
and cap upon the spiral spring, in order to ensure that the mitre face of the valve
spindle shall be up against its seat. Suitable stops may be placed on the hand
wheel and the valve chest cover, for ensuring that the apertures in the valve shall
be in the required positions.
Referring to the accompanying drawings,
Figure 1 is a sectional elevation of a valve made according to the present
invention.
Figure 2 is a section taken on the line 2-2 of Figure 1, shewing the valve in
position with the two ports open and the steam issuing in both directions as indicated
by the arrows.
Figure 3 is a plan shewing the valve in position for directing the steam through
one port in the direction of the arrow.
Figure 4 is a plan shewing the valve in position for directing the steam through
one port in the direction of the arrow.
Figure 5 is a plan of the valve with the ports closed.
Figure 6 is a longitudinal section of a modification of the invention.
Figure 7 is a plan of a complete valve.
Figure 8 is a section taken on the line 8-8 of Figure 6.
E is a steam pipe through which the steam enters to the valve. It is secured to
a convenient flange arrangement F. G is the body or valve casing. His the valve
proper, with ports 1, 11. The valve H is pressed up on to the face J, J, by the
pressure on the back, in the usual way. In addition to that, a spiral spring K also
assists in keeping the valve up to its face when the pressure upon the back is
insufficient. A cap L surrounds a projecting nipple M on the bottom of the valve
case G, the cap L being pressed down by the action of the spring K and in its
turn pressing against the boss of a lever N.
A suitable pin or leather arrangement is provided to allow of the cap L sliding
lengthways, but preventing it from revolving.
A projecting flange O is cast on to the cap L. It has suitable markings engraved
upon its face to indicate the positions of the valve, an opening being cut through
the handle, to shew the indicating marks. P, P' are outlet nozzles.
To relieve the pressure upon the valve, the valve seat is recessed as shewn at S
in Figure 2, into which steam is admitted by means of a groove cut in any con-
venient position so as to establish free communication with the steam pressure, or a
packing ring inay be inserted in the cover as shewn at T, the ring being kept up to
the back of the valve by suitable springs.
Referring to Figure 6, the valve H is, in the modification illustrated herein, made
in the form of a hollow circular box. It is operated from its top face by means
of a square or other device, upon the end of the spindle Q. A cone R is formed on
the lower end of the spindle Q to prevent the escape of steam from the interior.
The spiral spring, cap and lever arrangement is practically identical with that

page_text: illustrated in Figure 1 and described above. In the valve shewn in Figures 6, 7
and 8, steam enters at E and escapes at P and P¹, the working of the valve being
the same as before described.
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. The combination in a circular disc valve, of a central spindle passing out
through the valve casing, and a spring arrangement for automatically keeping the
valve up to its face so as to prevent steam escaping around the valve spindle, as
set forth.
2. The combination in a hollow circular valve, of a spring packing ring on its
top face adapted to relieve the pressure and the valve spindle arrangement illustrated,
so as to not require a stuffing box; as set forth.
3. A multiple way cock or valve having a revolving disc valve, as set forth.
Dated this 7th day of Sentember 1895
PHILLIPS & LEIGH,
No. 22 Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.