Highly Compressed Gases.
Year: 1898

page_text: Highly Compressed Gases.
I, HARRY VAUGHAN RUDSTON READ, of Broad Street Avenue, Blomfield
Street, in the City of London, Engineer, 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;-
The invention relates to an improved valve capsule or receiver for containing
liquefied or highly compressed gas, said capsule being provided with means
whereby the closure is completed by the internal pressure, and with a safety
valve.
I will describe my invention by the aid of the accompanying drawings, in
which: :-
Fig. 1 is a section drawn to an enlarged scale of the upper part of a capsule or
receiver and its closing means previous to the charging of said capsule or receiver
with gas and the closing thereof.
Fig. 2 is a similar section after the charging and closing have been effected but
before the capsule or receiver has been removed from the charging and closing
machine.
Fig. 3 is a similar section of a capsule or receiver after it has been charged,
closed, and removed from the charging and closing machine.
Figs. 4, 5 and 6 are similar views to Figs. 1, 2 and 3, except that the closing
cap is shown differently supported for the charging and closing operations.
Figs. 7, 8 and 9 are similar views to the above showing another slight modifica-
tion in the form of the capsule or receiver.
Fig. 10 is a vertical section of the upper part of a capsule or receiver showing
another method of supporting the closing cap.
Fig. 11 is a vertical section of the upper part of a capsule or receiver showing
another method of supporting the closing cap.
Fig. 12 is a plan of the packing washer separately.
a represents the upper portion of my improved capsule or receiver; a¹ is
seat or
bearing surface for the cap or cover b, such seat or bearing a being formed,
as shown at Figs. 1, 2, 3. by boring the part a, or, as shown at Figs. 4, 5, 6,
by an annular indentation in the part a, or, as shown at Figs. 7, 8, 9, by making
the part a of the capsule or receiver of slightly larger diameter than the lower
Pine 71

page_text: part, whilst at Fig. 10 the closing cap is shown supported during the filling of
the capsule or receiver by a carrier a¹* extending to and supported by the bottom
of the capsule; at Fig. 11 the closing cap is shown supported during the filling of
the capsule or receiver by a rod or tube a¹** extending to and supported by the
bottom of the capsule.
The cap or cover has left around its edge or flange b¹ the burr 6* formed by
the punch or die when the disc, from which such cap or cover is made, is cut
out from the metal sheet, such burr * leaving sufficient openings between the
cap or cover b and its seat a¹ to permit of the entrance and exit of the gas in
the filling and discharge of the capsule or receiver. The cap or cover b has its
top thinned, as shown at 63, to such an extent as, whilst sufficient to resist the
pressure of liquefied gas at the normal temperature, will, in the event of undue
pressure caused by the expansion of the gas by an increase of temperature, be
broken away, thus acting as a safety valve and preventing damage from the
possible bursting of the body of the capsule or receiver.
Around the body of the cap or cover b is placed an exteriorly serrated or corru-
gated packing ring c of vulcanized rubber, vulcanite, or other suitable material.
The seat a¹ is made at such a distance below the edge of the part a of the
capsule or receiver that when the latter is charged and the part a is turned over
by the closing die, as shown at a Figs. 2, 3, 5, 6, 8, 9, 10 and 11, there will be left
space sufficient to permit of a short motion of the cap or cover 6 and packing
ring between the seat a¹ and the turned over part a². Thus, when the capsule
or receiver is charged and the part a² is turned over, the internal pressure will
force the cap or cover and packing ring cup against the turned over part a³,
as shown at Figs. 3, 6, 9, 10 and 11, and effect a tight closure.
In using my improved capsule or receiver I slightly push down the cap or
cover by any suitable form of apparatus and the gas is discharged into a bag,
bottle or other suitable container.
I would here remark that I do not broadly claim a capsule or receiver provided
with a closing cap or cover and packing ring secured by turning over the upper
part of the capsule or receiver.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:―
1. A valve capsule or receiver for containing liquefied or highly compressed gas
closed by means of a closing cap or cover, which acts as a valve, with the burr left
on its flange, or otherwise serrated, a packing ring surrounding the latter, a seat
within the capsule or receiver for said cap or cover when filling the capsule or
receiver, and the turned over edge of the upper part of the capsule or receiver,
between which and the said seat is a space large enough to permit of slight motion
to the cap or cover and packing ring for the purpose of securing a tight closure
by the internal pressure forcing the same against the turned over edge of the
capsule, instead of effecting the closure by compression of the packing material
between the neck and turned over part of the capsule or receiver and the side and
flange of the cap or cover, substantially as herein set forth.
2. A capsule or receiver for containing liquefied or highly compressed gas, having
a closing cap or cover, which acts as a valve, formed with a comparatively thin
portion in its head to enable the same to act as a safety valve, substantially as
herein set forth.
Doted this 6th day of Santambor 1200
HARRIS & MILLS,
23, Southampton Buildings, London, W.C., Agents.