Improvements in Valves for Regulating the Flow of Gases and Liquids under Pressure.
Year: 1898

page_text: Date of Application, 13th Sept., 1898
Complete Specification Left, 12th June, 1899-Accepted, 29th July, 1899
PROVISIONAL SPECIFICATION.
Improvements in Valves for Regulating the Flow of Gases and
Liquids under Pressure.
JAMES BLEWITT SPURGE, Engineer, of 45, Greek Street, London, W., do hereby
declare the nature of this invention to be as follows;-
This invention applies chiefly to regulating the flow of liquids & gases from
storage vessels or cylinders for anæsthetic and other purposes, and has for its
object the provision of more efficient means for effecting such regulation with
the minimum deterioration of the working parts, in order that their efficiency
shall not be impaired with continued use. For this purpose I provide two valves
which may be either of the screw down type such as are employed with gas
cylinders or for controlling steam or water, opening or closing by means of a
rotary movement, or they may be of the spindle or ball form, opening and shutting
by means of an up and down movement, but with modifications in detail to suit
my purpose or a combination of both kinds may be employed.
These valves are located in the channel of communication with the gas or
liquid, so arranged mechanically that one or the other of them shall be alter-
nately brought into or thrown out of action. The function of one is to stop the
flow entirely by closing or be open wide offering little if any impediment to the flow,
whilst the other is for regulating the flow which is dependent upon the extent
to which it is closed or opened. This is achieved by gearing the operating
wheels or levers of the screw down type together and in the up and down type
by means of levers links or studs in such a manner, that operating the mechanism
shall simultaneously open the stop valve and commence to and ultimately close
the regulating one if desired.
By this arrangement I ensure that the friction of the gases or liquid shall not
score, abrade, deform or otherwise injure the working surfaces of the valve
employed for completly arresting the flow. The closing valve is normally main-
tained shut by the aid of a spring, weight, or pressure of the gas or liquid or by
any two or more acting in combination, while the other is kept in the open
condition by similar means.
The alternating action of these valves can be arranged to be manipulated by
the hand or foot either by pushing, pulling, rotating or rocking a rod, stud,
wheel, or lever, and is such, that by a simple movement the closing valve is
opened wide and simultaneously the other valve commences to close the passage,
and check the flow, the extent of this checking action being dependent upon the
force exerted, if too great it will more or less be completely effected. Conse-
quent upon this alternate action of the two valves the flow is under perfect con-
trol. These valves can be fixed either in or upon the cylinders themselves or
when provided with a suitable coupling for connecting with the cylinder outlet,
can be mounted upon a stand when two or more can be grouped together or com-
bined in one casting, case, or box to form a compact arrangement for holding

page_text: a store of different gases or liquids, or a reserve of cylinders of the same kind
any of which can be drawn upon independently of the others as required.
Dated this 13th day of September 1898.
Improvements in Valves for Regulating the Flow of Gases and
Liquids under Pressure.
JAMES BLEWITT SPURGE, of 45, Greek Street, London, W., Engineer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention applies to regulating the flow of gases and liquids from storage
vessels or cylinders for anaesthetic and other purposes, and has for its object
the provision of more efficient means for effecting such regulation, with the
minimum deterioration of the working parts, in order that their efficiency shall
not be impaired by continued use.
Figs. I II III IV and V in the accompanying sheet of drawings show 3
methods of carrying out my invention. The lettering corresponding to parts
having similar functions in each instance.
The essential parts of my improved valve are shown in section Fig. I aaa
is a piece of metal provided with a small way through it, w. The way at both
ends being gradually or abruptly enlarged, these changes in diameter form valve
seats or the outer ends a, and a, may be shaped or used as shown for a like pur-
pose. In the enlarged portions are fitted valves, and pointing towards
each other, the shutting valve, is tipped preferably with some slightly yielding
material such as vulcanite, the regulating valve is provided with a projecting
pin to act as a distance piece, in order to prevent both v₁ and 2 from being in
the closed position at the same time. is a strong box or recess containing a
springs and provided with a coupling to make connection with the cylinder
containing the gas or liquid to be controlled. «, is screwed into 6 forming a
metallic joint, the valve ₁ owing to the presence of the springs is forced into
its seating and is kept normally in the closed condition. d is also a box or
recess litted over a, and held in position by the sleeve e screwing upon the
bolt f, d is provided with a stuffing or gland box through which works the rod g,
it is also provided with an outlet at comunicating with a similar nipple piece
as o shown belonging to b₁. The lower termination of the rod rests upon the
short end of the lever or pedal whilst the upper is in contact with ₂.
The action is as follows,
Owing to the mechanical advantages of the lever 7 moderate pressure exerted
upon its longer end by the hand or foot will be sufficient to quickly force the
shutting off valve clear of its seating in opposition to the pressure of the gas
and springs, simultaneously bringing the regulating valve on to its seating
and checking the flow, the extent of the flow being dependent upon the pressure
brought to bear upon too much being sufficient to arrest it almost completely.
The advantages of this arrangement are
1st. The direct action of, and the springs together with the slight move-
ment less than 10 of an inch, ensure quick and efficient action.
2nd. The shutting valve suffers the minimum deterioration as it is either in
one or the other of two positions open or closed, consequently scoring or abrading
of the working surfaces are avoided.

page_text: 3rd. Any disposition to freezing of the moisture contained in the, or of the
gas or liquid itself (on account of the reduction of pressure) takes place at regula-
ting valve to leaving the efficiency of the shutting valve v, uninpaired.
Fig I. is a sectional view of a stand for containing 3 of my improved valves.
Fig. II is a plan through AA
Fig. III a method of arranging 2 for fixing inside a box the manipulating
levers 7, being constructed to slide through rocking pieces rr, for the purpose
of extension outside the box when required for use, and pushed in again out of
the way when desired.
Fig. IV and V are two views of my valve permanently attached to a cylinder.
In this modification the manipulating part is made easily separatable by simply
unscrewing at the point k, when the part containing the valve can have a cap
screwed over it, and in this condition having no lateral projections is secure
from damage in transport to the compressing factory whenever necessary for
recharging.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare what
I claim is:
1st. Separating the working surfaces of a valve for controlling the flow of a
gas or fluid contained under pressure, into two parts placed seriatum in the
channel of communication, the function of one being to throttle or regulate the
flow, whilst the other is to arrest it completely or offer little impediment to its
flow, substantially as herein described and set forth.
2nd. The action of the shutting valve, in combination with the regulating
valve, the rod g and lever ₁, substantially for the purpose as herein described.
3rd. The application of these improved valves in the manner shown in Fig. I
and Fig. III in groups of three and two and singly as in Fig. IV, V substan-
tially as set forth.