Improvements in Pressure Regulating or Reducing Valves.
Year: 1887

page_text: Date of Application, 15th ec., 1887
Complete Specification Left, 12th Sept., 1888
Complete Specification Accepted, 26th Oct., 1888
PROVISIONAL SPECIFICATION.
Improvements in Pressure Regulating or Reducing Valves.
I, WILLIAM LLOYD WISE, of No. 46, Lincolns Inn Fields, in the County of
Middlesex, Consulting Engineer and Patent Agent, do hereby declare the nature of
this invention (a communication to me from abroad by Franz Heuser & Co., Manu-
facturers, of Hanover, in the Kingdom of Prussia and German Empire,) to be as
follows:-
This invention has reference to a construction of pressure regulating or reducing
valve in which there is a diaphragm partly shielded or armoured. The armoured
part is able to swing or oscillate, a part that serves as a hinge being strengthened by
a flat elastic plate or spring. To the armoured part of the diaphragm is pivotted a
rod around which there is a spiral spring. Directly below this spring and beneath
the diaphragm is a second spring. The body of the apparatus is formed with a part
through which there is a hole with female thread to receive a screw forming part of a
cap, the arrangement being such that, by turning the cap, the spiral springs can be
more or less compressed or released so as to adjust the diaphragm as required
according to the pressure and desired opening of the valve. Fluid enters the chamber
below the diaphragm by an opening controlled by the valve, and leaves by another
opening. The extent of opening of the valve past which the fluid the pressure of
which is to be reduced is admitted is controlled by a mechanical connection from the
armoured part of the diaphragmn, the said valve being of conical form with a stem or
spindle that is screwed and has upon it a nut worked from the diaphragm. The
apparatus is provided with a manometer and safety valve.
Dated this 15th day of December 1887.

page_text: COMPLETE SPECIFICATION.
Improvements in Pressure Regulating or Reducing Valves.
I, WILLIAM LLOYD WISE, of No. 46, Lincoln's Inn fickls, in the County of
Middlesex, Consulting Engineer and Patent Agent, 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 has reference to a construction of pressure regulating or reducing
valve in which there is a diaphragm partly shielded or armoured. The armoured
part is able to swing or oscillate on a part that serves as a hinge, being strengthened
by a flat elastic plate or spring. To the armoured part of the diaphragm is pivotted
a rod around which there is a spiral spring. Directly below this spring and beneath
the diaphragm is a second spring. The body of the apparatus is formed with a part
through which there is a hole with female thread to receive a screw forming part of
a cap, the arrangement being such that by turning the cap, the spiral springs can be
more or less compressed or released so as to adjust the diaphragm as required
according to the pressure and desired opening of the valve. Fluid enters the chamber
below the diaphragm by an opening controlled by the valve, and leaves by another
opening. The extent of opening of the valve past which the fluid the pressure of
which is to be reduced is admitted is controlled by a mechanical connection from the
armoured part of the diaphragm, the said valve being of conical form with a stem or
spindle that is screwed and has upon it a nut worked from the diaphragm. The
apparatus is provided with a manometer and safety valve.
Referring to the accompanying sheet of drawings Fig. 1 is a central longitudinal
section through a self acting pressure reducing valve according to this invention.
Fig. 2 is a section at right angles to Fig. 1.
Fig. 3 is a horizontal section."
The case is made in two pieces a and b, each of which has a flange by which the
two are united. Between these two flanges there is interposed the edge of a
diaphragm which divides the interior of the case into two compartments. This
diaphragm is armoured by two metal plates e, e which grasp it, and also an elastic or
hinge plate. This latter is secured between the flanges of the case, and serves to
control the motion of the diaphragm.
Upon the upper plate e of the diaphragm there is pivotted a rod g around which
there is a spiral spring acting in compression. The amount of initial compression on
this spring can be varied by means of the cap v. When the central tube of this cap
is screwed into the boss on the top of the case the spring is compressed, and when it
is screwed outwardly the spring is relaxed. A second spring / beneath the
diaphragm maintains an upward thrust on it at all times.
k
There are two passages and at the lower part of the case, the former serving as
inlet and the latter as outlet. The inlet is commanded by a conical valve s, which
takes into a seating 1.

page_text: This valve has a screw stem on which is a nut m connected by a fork p with the
diaphragm, the connexion being such that when the diaphragm rises it moves the
valve towards its seat and vice versa. The valve can be adjusted by removing
the plug o, and screwing the valve backwards or forwards in the nut.
The Huid to be regulated or reduced in pressure enters at k and flows past the.
valve s into compartments c, where it exercises an upward pressure on the diaphragin d.
It flows out by the opening f. If the pressure of the fluid on the diaphragm is greater
than the pressure of the spring n the diaphragm will move upwards closing or partly
closing the valves, and stopping or reducing the flow of the fluid. The pressure
existing in the compartment c is indicated by a manometer not shewn in the drawings
and the cap is turned until the required pressure is obtained.
Apparatus of this kind is well adapted for feeding carbonic acid gas, stored under
great pressure, into beer barrels.
Having now particularly described and ascertained the nature of said invention
and in what manner the same is to be performed I declare that what I claim is
1. In a pressure regulating or reducing valve a partly armoured diaphragm guided
by a plate spring or clastic hinge about which it is constrained to move substantially
as described.
2. In a pressure regulating or reducing valve the combination with a diaphragm
of the kind referred to in the preceding claim, of a valve operated by the said
diaphragm, and controlling the inlet of fluid to the valve case, substantially as
described.
3. In a pressure regulating or reducing valve the combination of the valve s having
a screwed thread shank or spindle, the nut m, and the fork connected to the
diaphragm, substantially as described and for the purpose specified.
4. In a pressure regulating or reducing valve the combination with a diaphragm of
iwo springs, one of which acts with the fluid to close the valve, while the other, which
is adjustable, acts in opposition to the fluid to open the valve, substantially as
described.
5. The improved pressure regulating or reducing valve constructed, arranged, and
operating, substantially as described with reference to the drawings.
Dated this 12th day of September 1888
W. LLOYD WISE,
Per. F. J. B.