Improved Valve, applicable to Vessels Containing Compressed Gas, Gases, or Gaseous Liquids.
Year: 1897

page_text: Date of Application, 10th Apr., 1897-Accepted, 5th June, 1897
ע VI
DI MOTTICATION.
Improved Valve, applicable to Vessels Containing Compressed Gas,
Gases, or Gaseous Liquids.
We, JOSEPH CHARLES PLUNKETT, Surgeon Dentist, of 173 Strond Green
Road, London N. and GUSTAVO DONAT Warehouseman, 3 and 4 Australian
Avenue London E.C. 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 aud by the following statement:-
Our invention consists in an improved construction of valve applicable to vessels
containing compressed gas, gases, or gaseous liquids. The object we have more
particularly in view being by means of the combination of interacting parts.
hereinafter described to ensure the hermetic sealing of cylinders and other vessels
containing compressed gases or gaseous liquids, under all variations of internal
pressure; to provide a ready means for liberating said gases or gaseous liquids in
any required volume or quantity with ease and safety, and to prevent tampering
with contents during transit.
The construction, application, and operation of our invention will be readily
understood by reference to the accompanying drawing in which :-
Fig. 1, is a plan part being in section.
Fig. 2, is a part section on line A. B. Fig. 1.
In the drawing 1, is the steel cylinder or other vessel containing compressed gas
or gaseous liquid. The body or frame 2, which contains the spring, guide rod,
valve spindle, and other co-operating parts may be made of gunmetal, brass, iron,
or other suitable material, and is secured thereto by the screwed nose piece 3, the
extremity of which consists of a tapering ring which forms the valve seat 4.
Through the body a hole is bored and to this is carefully fitted the metallic spindle 5,
a packing ring or washer of vulcanized fibre 6, or equivalent suitable material being
inserted at the point shewn. A grooved channel 6 is also formed on the spindle 5,
and a soft rubber washer 6" is shrunk thereon; this, has the effect of preventing
any escape of gas past the spindle. The lower part of spindle 5, is screwed and
fitted with the valve 7, which is packed at its upper end as shewn with a ring of
vulcanized fibre 6, and secured to the spindle by a nut 8. The spindle 5, is turned
down beneath the packing slightly smaller than the bore hole, so as to allow the
gas or gaseous liquid to pass around it when the valve is opened, by means of the
hole 10 to the screwed union outlet 9.
The opposite projecting end of the spindle may be shaped to a square section 5¹
and fitted with a plain and removeable lever 11 of any convenient kind, see dotted
lines Fig. 2, or a small hand wheel or other device may be mounted thereon or
keyed thereto.
A stout steel or other tough metal pin or stud 12, is screwed, driven, riveted, or
otherwise securely fastened into or through the swell upon spindle 5; a roller 13
of steel or other hard metal being so journaled thereon as to engage with, and
travel along an inclined or helical slot 14, milled out or otherwise formed in the
body. The upper end of the pin or stud 12, is hinged or pivoted by means of a
screwed pin 15, to the slotted head 16, of the guide bar or rod 17, which is formed
with a shoulder 18; a spiral spring 19, surrounds the guide bar or rod and abuts
against the shoulder 18, thereon and the end wall 20 of the body 2, which is
suitably cored out to receive it and fitted with a cover 20¹ screwed on. The guide

page_text: rod or bar 17, passes through the end wall of the body 2, and its end 21, bored:
and tapped, so that when charging the valve may be kept open by screwing in the
shouldered plug 22, having a milled head 23, shewn in Fig. 1.
Another feature of our invention consists in affixing a metallic cap 24, over the
projecting square or other shaped end of the spindle. This we attach preferably
by screwing as shewn at 25, a hole 26, being cored or slotted through the cap and
end of the spindle 5. In this is placed a pin, cotter, or equivalent device 27 the
end of which is drilled as at 28, or otherwise fashioned so as to enable a padlock
to be attached.
In this manner we prevent all tampering with the valve while travelling, or the
loss of contents or damage from rough handling.
The operation of our invention is as follows:-A handle suitable for the purpose
required being fitted to the squared or other shaped end of spindle 5, and pressure
exerted upon it in such a direction as to open the valve, the roller 13 will be
compelled to travel in the inclined milled groove 14, the valve 7, being thereby
forced from its seat. It will be understood that the inclined or helical slot may be
made right or left handed so as to enable the regulating handle operating the valve
to be turned in either direction.
The escaping gas or gaseous liquid passes in the direction of the arrows through
the bored hole 10, to the outlet 9, and thence to the rubber bag, bottle, or other
receptacle for use. Since the act of opening the valve by the partial rotation of
spindle also tends to compress the powerful spring 19, it is promptly and securely
closed on pressure being removed quite independently of the pressure of the gas
or gaseous liquid contained in the vessel, which is constantly diminishing as the
contents are drawn off.
The valves generally employed for this purpose are what are known as conical
screw down valves; their efficiency being dependent upon the forcing together of
two hard metallic conical surfaces, it follows, that a considerable effort is required
to effectually close or keep such valves air tight; on the other hand they sometimes
become fixed, are always difficult to open, and cannot be successfully used for
giving a steady supply of gas or gaseous liquid without the intervention of some
form of regulating device. Our invention overcomes these defects and renders the
control of heavy pressures safe, effective, and simple.
Part of the difficulty in keeping compressed gas or gaseous liquor regulating
valves tight, arises from the formation or condensation of ice particles upon or
between the valve faces; the partial rotation of the spindle and valve described
peculiar to our invention suffices to crush or liquefy such particles, and thereby
overcomes this obstacle.
In some cases we may employ leather, pewter, lead or like soft metal as a valve
facing.
We do not confine the construction of our improvements to the exact shape
shevn; as it will be readily understood that it may be altered in detail to suit the
varying forms of gas or other bottles, cylinders, condensers, without departing from
its distinctive features. To charge a cylinder or vessel fitted with our
improvements the valve is opened to its full extent, and the plug 22, screwed into
the protruding end of the tapped guide rod 17, as shewn in Fig. 1.
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 improved valve for regulating compressed gas, mixed gases, and
gaseous liquids constructed and operating in the way and manner and for the
purposes set forth.
2. In a valve for regulating the supply, or hermetically closing or sealing
cylinders, gas or other bottles, or vessels containing compressed gas mixed gases or
gaseous liquids, the combination and use of the partially rotating spindle 5, having
a fibre metal, or other suitably faced valve threaded or fastened thereon and

page_text: closing against a metallic seating. The rubber packing 6" mounted as shewn, the
stud 12, turning with spindle and carrying a metallic roller 13, which engages with
a skew inclined or helical slot 14, in casing. The guide 17, flexibly secured to
stud 12, surrounded by spring 19, the respective parts co-operating and interacting
for the purposes set forth.
3. In valves for sealing and regulating compressel gas bottles or vessels.
containing gaseous liquids the combination with a partially rotating spindle.
fitted with a valve faced with vulcanized fibre or equivalent metallic or other
packing, of a spring controlled roller mounted on stud thereon and travelling in a
right or left handed inclined slot or groove formed in the body or casing for the
purpose of opening said valve or closing the same, irrespective of the pressure of
the contents of the vessel.
4. The combination with a valve for regulating or sealing compressed gases or
gaseous liquids constructed as described of the tapped guide and the screwed
plug co-operating therewith for maintaining the valve in the open position when
charging.
5. The combination in or with a valve for regulating the supply to or from, or
hermetically sealing bottles cylinders or vessels containing compressed gas, gases,.
or gaseous liquids of a cap 24, screwed or otherwise fastened to the body 2, and
enclosing the square or other shaped end of spindle 5, the cotter or pin 27, passing
through said cap and spindle, and the hole 28, therein for attaching a padlock or
the like means of fastening same.
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1009
FRANCIS M. ROGERS,
21 Finsbury Pavement, London, E.C., Agent for Applicants..