Improvements in and relating to Valves.
Year: 1895

page_text: Date of Application, 7th Mar., 1895
Complete Specification Left, 6th Jan., 1896-Accepted, 7th Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in and relating to Valves.
We, GEORGE WALLACE BRYANT, of 6 Christchurch Road, Gravesend in the
County of Kent, and ALEXANDER THOMSON MAOFARLANE, of 25 St. Andrews
Drive, Pollokshields, in the City and County of Glasgow, Engineers, do hereby
declare the nature of our invention to be as follows:-
:-
This invention has reference to improvements in and relating to valves specially
applicable to water gauges for steam boilers and the like.
As applied to a water gauge the water indicating glass gauge would be secured
by screwed on caps between stuffing boxes on the steam and water inlet chests
respectively.
The valve fittings within each of these chests would according to our improvements
be constructed all as follows:-
A cover or boss would be fixed on the chest from the opposite end to that of the
steam or water inlet branch. This cover would be fitted on the outside with a
stuffing box for spindle, and on the inside with two cylindrical valve sents one within
the other, forming an annular hollow chamber between them, with the outer seat
fitting the inside of chest, and the inner seat mounted on the end with an annular
hollow collar valve floating loose on the end of this scat aud the inside wall of chest.
The spindle passing through the stuffing box on outside of cover would be formed
with a screw thread on its inner centre part to work within a hollow screw part in the
cover, and the iuuer end mounted with a disc valve fixed on end of spindle, outside
the annular collar valve, while another disc valve would be formed on spindle within
the hollow collar valve.
In the normal working position the pressure fluid or steam, would pass from inlet
branch, between the outer disc valve and end of hollow collar valve, through the
latter into the hollow centre of cover or boss, then through an opening into the
annular hollow chamber between the cylindrical seats, "moving the collar valve
back to a Hanged stop on chest" from whence it would pass through an opening
into indicating glass gauge.
Should the glass get broken however, the annular collar valve will be automati-
cally moved from the flanged stop on chest, until it travels in and abuts against
the inner disc on spindle and there form a fluid or steam tight joint.
To make sure of being perfectly steam tight howover when replacing a broken
glass the spindle may be turned to move and secure the outer disc valve against the
annular collar valve pulling the same down on the outer cylindrical scat."
the position when valves are, closed.
This is
For operating the valves the spindles of the steam and water chests are fitted
with wheels or cranks which are connected eccentrically by pins to a connecting
rod. By turning a handle on one of the wheels, preferably the lower oue the
valves of both chests can be simultaneously opened or closed as required.
A blow off sludge branch with cock is fitted below the water inlet chest in line
with the passage from gauge glass, and the handle of this cock is slotted to suit a
pin connected on the end of the rod connecting the valve spindles of steam and
water chests. A dial plate is fitted in front of operating hand lever of cock, with
indicating positions, marked on it such as top chest only, bottom chest only, and both
top and bottom chests, so that if the handle be turned to these positions, the inner
diso valve will be oponed or closed ou the inner cylindrical seat as required for the

page_text: cock and top or steam valve to be open to blow through, or the cock and bottom or
water valve to be open to blow through, or the cock and both of these valves to be
open to blow through or conversely they may be all shut, the positions and sizes of
the various parts being adjusted to permit of these movements.
Dated the 6th day of March 1895.
improvements in and relating to valves,
We, GEORGE WALLACE BRYANT of 6 Christ-church Road, Gravesend in the
County of Kent, and ALEXANDER THOMSON MACFARLANE of 25 St. Andrews
Drive, Pollokshields, in the City and County of Glasgow, Engineers do hereby
declare the nature of our invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement in writing that to say :-
This invention has reference to improvements in and relating to valves specially
applicable to water gauges for steam boilers and for other conditions in which
bursts are liable to take place.
And in order that our said invention and the manner of performing or carrying
same into practice may be properly understood we have hereunto appended four
sbeets of explanatory drawings in which the same reference letters are used to
indicato corresponding parts in all the figures where shown.
Figure 1 is a sectional elevation and Figure 2 a view at right angles thereto,
showing our improved valves as applied in connection with a steam boiler water
gauge,
Figures 1 and 1" are sections taken through the sludge cock.
Figure 3 is a view analogous to Figure 1, but only partly shown in section, of a
slightly modified arrangement of valve and fittings suitable for use in connection
with a water gnuge; and
Figure 3 is a sectional view at right angles through spindles looking at the
connecting rod.
Figure 4 is a sectional elevation showing our improvements as applied to a stop
valve,
Figure 5 is a horizontal section as taken on the line Y-Y Figure 4, while
Figure 6 is a plan of the under surface of annular collar valve.
Figures 7, 8 and 9, are views corresponding to Figures 4, 5 and 6, of au analogous
arrangement of valve, in which the inlet steam branch is placed at the side, instead
of centrally below as in the former figures.
Referring to these drawings
―:
As applied to a water gauge as shown in Figures 1 and 2 the water indicating
glass gauze Z would be secured by screwed on caps Z', Z' between stuffing boxes D
on the steam and water inlet chests D respectively.
The valve fittings within each of these chests D would according to our improve-
ments be constructed all as follows:-
:―
A cover or boss A would be fixed on the chest D from the opposite end to that
of the steam or water inlet branch D or G respectively. This cover A would
be fitted on the outside with a stuffing box A¹ for spindle B, and on the inside
with two cylindrical valve seats C₁ Cone with the other forming an annular
hollow chamber C between them with the outer seat C fitting the inner surface
of chest D, and the inner seat C mounted on the end with an annular hollow
collar valve E moving loose on the end of this seat C³.
The spindle B passing through the stuffing box A' on outside of cover A would

page_text: be formed with a screw thread B¹ on its inner centre part to work within a hollow
screw part in the cover A, and the inner end mouated with a disc valve b fixed on
end of spindle B outside the annular collar valve E, while another diso valve b¹
would be mounted on spindle B within the hollow collar valve E.
In the normal working position the pressure fluid or steam would pass from inlet
branch G or D' between the outer disc valve band end of hollow collar valve E
through the latter and an opening C' into the annular hollow chamber C between
the cylindrical seats C₁, C, moving the collar valve E back to a flanged stop D¹
en chest D from whence it would pass round the boss into the indicating glass
gauge Z.
Should the glass Z get broken or burst however, the annular collar valve E will
be automatically moved from the flanged stop D' on chest D until it travels in and
abuts against the inner disc 6' on spindle B and there forms a fluid or steam tight
joint.
b
To make sure of being made perfectly steam tight however, when replacing a
broken glass the spindles B may be turned to move and secure the outer diso
valves 6 against the annular collar valve E and the inner disc valve against
the seat C to prevent the exit of steam or fluid. This is the position when the
valves are closed and the dotted circles on wheels H, I, show position of pins
and connecting rod when valves are closed.
For operating the valves E the spindles B of the steam and water chests D are
fitted with hand wheels or cranks H I which are connected eccentrically by
pins H, I, to a conuecting rod J. By turning the handle II' on one of the
wheels preferably the lower one H the valves of both chests can be simultaneously
opened or closed as required.
A blow off sludge branch K with cock K' is fitted below the water inlet chest D
in line with the passage from gauge glass Z, and the lever K' formed in one with
the boss of the bandle K is slotted to suit a piu fitted on the end of the rod J
connecting the valve spindles of steam and water chests. A dial plate may be
fitted at back of operating hand lever of cock with indicator positions marked on
it such as top chest only bottom chest only, and both top and bottom cheste,
so that if tho handle K' be turned to these positions the disc valves band b¹ will
be opened or closed as required for the cock and top or steam valve to be open
to blow through, or the cock and bottom or water valve to be open to blow through,
or the cock and both of these valves to be open to blow through; or conversely
they may be all shut, the positions and sizes of the various parts being adjustod to
permit of these movements.
The distance of the valves b and 61 from each other in the top chest D is greater
than that in the lower chest D, and this permits of sufficient variation to enable
the valves in both chests to work independently when operated by the handle K'
for blowing through cock K, this variation being overcome when the valves are
closed by the small shoulder on disc valve in top chest having entered
into the seat C while in the bottom chest the disc valve abuts against the
Bent C¹.
In the arrangement shown in Figures 3 and 3^ the screw on spindle B is made
right handed, instead of left banded as in Figures 1 and 2, and the disc valve b is
made to close the Huid duct D' which acts as a seat and the valve to close the
end opening in the hollow collar valve E when a burst takes place, and stops are
formed on the valve to abut against the sent C and permit of the passage of
steam or water in the normal working conditions, the hollow collar valve E moving
up to this valve band closing the passage wheu an escape takes place. In this
arrangement Figures 3 and 34 also, to make sure of being perfectly steam tight
however when replacing the broken glass the spindle B may be turned to move
and secure the outer disc valve against the inlet branch Dr. This is the
position when valves are closed.
For operating the valve the spindles B of the steam and water chests D are
fitted with handwheels 1 and H with pins I, II, fitted in the back. When

page_text: turning these handwlicols to open or close the valves, the said pins are arranged
to run into or out of connection with a rod J connected by a pin h to the handle K'
of a blow off sludge cock K' fitted in a ensing K below the water inlet chest D.
When blowing through the cock and both the top or steam valve, and the bottom
or water valve, the said handle K³ is pulled down turning the said hand wheels HI
back, thereby bringing the shoulder B* on the spindle B (inside of the disc
valve and annular collar valvo E) out, and thus keep the annular collar valve E
from closing on the inner dise valve b¹.
When blowing through the cock, and top or steam valve only, or the cock and
bottom or water valve only, the hand-wheels H or I respectively are turned and
the valves opened or closed independently, the positions and sizes of the various
parts being adjusted to permit of these movements.
In the arrangement of valves shown in Figures 4 to 9 the valve E, is packed
like a piston, while its centre part E is formed with a series of segmental
openings.
This pistou E is mounted loose on the spindle B, as shown in Figure 4 and a
valve b is fitted on lower end of spindle to work over an inlet branch seat D' on
the chest D. The cover A. of chest D is formed with a hollow or annular chamber
space d, and an opening is formed at the upper part of this chamber opposite to
outlet branch D. The spindle B as shown is formed with a square part at B, so
that it will not turn when raising or lowering the valve. The disc b¹ slides loose
on the spindle B, as shown in Figure 4, but it may be fixed to spindle B as shown
in Figure 7 when to be used in connection with single boilers, or if used in
connection with a battery of boilers the valve 6 Figure 7 may be arranged to work
:free.
The action of the valve is as follows:-
When the valve b is raised from off its sent D' steam or other fluid passes in by
the branch G and ascends through the segmental ports E¹ of valve E and raises
the disc ', as shown in Figuro 4, against the stop around spindle B, but as shown
in Figure 7 the disc being formed in one with the spindle B rises with same.
The steam then passes into chamber d and travels by the opening into outlet
branch D passing round above the top of valve E. In its normal condition tho
float valve E remains in the position shown in the drawings, but should a burst or
escape take place, the pressure above the valve E will be relieved aud this valve E
will be automatically raised until it comes against the disc b' in the raised position
of the latter and so the supply of fluid will be shut off. The shoulder 6 Figure 4
will bear on top of hoss of valve E and when the spindle B is turned to close the
valve when a burst or escape has taken place, it will bring tho valve E down the
desired distance and as shown in Figure 7 the whole disc b will do this.
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 :-
First. The construction or arrangement and combination of the parts of valves,
substantially as heroin described in reference to and shown in the accompanying
.drawings.
Second. In valves the arrangement and use of a moveable piston or diaphragm
to act as a valve substantially as aud for the purposes herein described in reference
to aud shown in the accompanying drawings.
Third. In valves, the combination of a moveable piston or diaphragm and duplex
dises mounted on a spindle substantially as and for the purposes hercin described
.in reference to and shown in the accompanying drawings.
Dated 4th Januar 1906
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.