IMPROVEMENTS IN PRESSURE-REDUCING VALVES FOR GAS, STEAM, OR WATER PIPES
Year: 1878

page_text: LETTERS PATENT to Hermann Ernst Thomas Goodson, of Fulham Road, in tho
County of Middlesex, Plumber, for the Invention of "IMPROVEMENTS IN
PRESSURE-REDUCING VALVES FOR GAS, STEAM, OR WATER PIPES."
Sealed the 28th January 1879, and dated the 10th October 1878.
PROVISIONAL SPECIFICATION left by the said Hermann Ernst Thomas
Goodson at the Office of the Commissioners of Patents on the 10th October
1878.
HERMANN ERNST THOMAS GOODSON, of Fulham Road, in the County of Middlesex,
Plumber. "IMPROVEMENTS IN PRESSURE-REDUCING VALVES FOR GAS, STEAM, OR
WATER PIPES."
My Invention relates to improvements in pressure-reducing valves for gas, steam,
or water pipes, which have for their object to reduce the pressure of the fluid or
gas flowing from the main before being drawn off or otherwise applied through.
the service pipe for use.
This
My Invention consists in fixing in or between the main and service pipes, by
means of unions or otherwise, a valve box containing a double-acting valve.
valve box is made in two parts, one of which contains a pressure valve, opened by
the pressure from the main and connected by a spindle on its back side with a
circular flexible valve or diaphragm of india-rubber, steel, or other elastic material;
the surrounding portion of this valve or diaphragm is secured between the meeting
flanges or joints of the valve box, and is perforated internally close to the box with
a ring or series of holes for the passage of the fluid or gas. This valve is of larger
area than the pressure valve. Round the latter is a movable ring or casing per-
forated with holes, and on the top edge of this ring or casing is carried a plate in
which is formed the stuffing box for the connecting spindle, its upper projecting
edge supporting or forming the seat for the flexible valve or diaphragm.
Projecting from the inside of the other part of the valve box is a second ring or
Pains S21

page_text: casing perforated with holes, and its lower edge taking on to the flexible valve or
diaphragm where the latter rests on its seat.
The water, steam, or gas coming from the main at a great pressure opens the
pressure valve and passes through the holes in its surrounding ring or casing,
through the holes round the flexible valve or diaphragm, and through the holes in
the second ring or casing into the valve box and service pipe above the flexible
valve or diaphragm, which being of larger diameter than the pressure valve the
pressure of the fluid or gas on its upper side is greater than that on the under side
of the pressure valve, and the latter is consequently closed, and the pressure in the
service pipe thereby reduced. The effect may be still further increased, if desired,
by tightening the gland of the stuffing box on the connecting spindle of the two
valves.
A channel or vent is provided for the escape of any fluid or gas finding its way
between the flexible valve or diaphragm and its seat.
The advantages of this Invention are that the danger of the service pipe bursting
is avoided, and waste prevented, besides considerably reducing the wear and tear of
the cock or tap. The unpleasant and injurious concussion and noise caused in the
pipes by suddenly closing the cock or tap under the ordinary system is entirely
obviated.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Hermann Ernst Thomas Goodson in the Great Seal Patent Office
on the 10th April 1879.
HERMANN ERNST THOMAS GOODSON, of Fulham Road, in the County of Middlesex,
Plumber. "IMPROVEMENTS IN PRESSURE-REDUCING VALVES FOR GAS, STEAM, OR
WATER PIPES."
My Invention relates to improvements in pressure-reducing valves for gas, steam,
or water pipes, which have for their object to reduce the pressure of the fluid or
gas flowing from the main before being drawn off or otherwise applied through the
service pipe for use.
It consists in fixing in or between the main and service pipes, by means of unions
or otherwise, a valve box containing a double-acting valve. This valve box is made
in two parts, one of which contains a pressure valve, opened by the pressure from
the main, and connected with a circular flexible valve or diaphragm of india-rubber,
steel, or other elastic material; through this valve or diaphragm, which is of larger
area than the pressure valve, the fluid or gas passes.
The water, steam, or gas coming from the main at a great pressure opens the
pressure valve and passes through the flexible valve or diaphragin into the service
pipe above the latter, which being of larger area than the pressure valve the
pressure of the fluid or gas on its upper side is greater than that on the under side
of the pressure valve, which is consequently closed and the pressure in the service
pipe thereby reduced.
And in order that my said Invention may be well understood, I shall now
proceed more particularly to describe the same, reference being made to the
accompanying Drawing, like letters of reference indicating corresponding parts in
all the Figures.
Figure 1 is a mid-sectional view of one form of my improved pressure-reducing
valve.
A represents a double-acting valve box fixed by unions, as shewn (or otherwise),
in or between the main and service pipes B, B', respectively, and made in two
parts C, C¹, one of which, C, contains a pressure valve D opened by the pressure
from the main B, and connected by its spindle E with a circular flexible valve or
diaphragm F made of india-rubber, steel, or other elastic material, and of larger
area than the pressure valve D. The surrounding portion of this valve or dia-
phragm F is secured between the meeting flanges or joints of the two parts C, C¹,
valve box A by screws a, a, as shewn, and is perforated internally, close to the
shell of the box A, with a ring or series of holes b, b, at suitable distances apart
for the passage of the fluid or gas.
Round the pressure valve D is a moveable ring or casing G perforated through
its circumference with holes c, c, and on the top edge of this ring or casing G is
carried a plate H, in which is formed the stuffing box I of the connecting valve
spindle E. The upper projecting edge d of the ring or casing G supports or forms
the seat of the flexible valve or diaphragm F.
Projecting from the inside upper portion of the other part C¹ of the valve box A
is a second ring or casing J perforated through its circumference with holes e, e,
and its lower edge taking on to the upper side of the flexible valve or diaphragm F
where the latter rests on its seat d.
The water, steam, or gas coming from the main B at a great pressure opens the
pressure valve D and passes through the holes c, c, of the ring or casing G, through
the holes b, b, of the flexible valve or diaphragm F, and through the holes e, e, of
the second ring or casing J into that portion of the valve box and service pipe B¹
above the flexible valve or diaphragın F, which being of larger diameter than the
pressure valve D the pressure of the fluid or gas on its upper side is greater than
that on the under side of the pressure valve D, the latter in consequence being

page_text: closed and the pressure in the service pipe B' thereby reduced. This effect may be
regulated as desired by tightening or loosening the gland of the stuffing box I on
the connecting spindle E.
A channel or vent f, arranged as shewn, or in any other suitable position, is
provided for the escape of any fluid or gas finding its way between the flexible
valve or diaphragm F, its seat d, and the plate H.
Figure 2 shows a modified form of my Invention, in which the moveable ring or
casing G is dispensed with, and the plate H¹ secured directly to the ring or casing J
by the screws (or otherwise), which passing through the seat & into the casing J
carry the flexible valve or diaphragm F between them, as shewn.
Figure 3 shows an arrangement in which a piston P is substituted for the flexible
valve or diaphragm F (Figs. 1 and 2), in which case the ring or casing Gis extended
upwards to the crown of the box A', and the general construction greatly simplified.
This form of my Invention is particularly applicable for large main service pipes.
The advantages of this Invention are that the danger of the service pipe bursting
is avoided and waste prevented, besides considerably reducing the wear and tear of
the cock or tap. The unpleasant and injurious concussion and noise caused in the
pipes by suddenly closing the cock or tap under the ordinary system is entirely
obviated.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or carried into
effect, I would observe in conclusion that what I consider novel and original, and
therefore claim as the Invention secured to me by the herein-before in part recited
Letters Patent is,―
The application and use of a valve box containing a pressure valve connected
with a valve or diaphragm of larger area than the pressure valve to the main and
service pipes for gas, steam, or water, substantially as and for the purposes herein-
before described, and illustrated by the accoinpanying Drawing.
In witness whereof, I, the said Herman Ernst Thomas Goodson, have here-
unto set my hand and scal, this Fourth day of April, in the year of our
Lord One thousand eight hundred and seventy-nine.