Improvements in Flasks or Cylinders for Containing Gases under Pressure or Liquefaction or the like.
Year: 1894

page_text: Date of Application, 12th Apr., 1894
Complete Specification Left, 14th Dec., 1894-Accepted, 6th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in Flasks or Cylinders for Containing Gases under
Pressure or Liquefaction or the like.
We EVERARD HESKETH and ALEXANDER MARCET of 23 St. Swithin's Lane
in the City of London Engineers do hereby declare the nature of this invention to
be as follows:-
The object of this invention is to provide in connection with flasks, or cylinders,
for containing gases under pressure, or liquified gases, or the like, means whereby
on the occurrence of abnormal pressure inside the flask, or cylinder or the like,
when charged the pressure will be relieved without a dangerous explosion and
rupture of the flask or cylinder or the like occurring.
The
According to this invention there is employed a disc, or piece, of copper or other
material, which is sufficiently strong to bear the normal pressure inside the flask,
cylinder or the like but which is not sufficiently strong to withstand rupture when
the internal pressure has, from any cause, reached a degree which would render an
explosion and rupture of the flask, or cylinder, or the like, liable to occur.
disc or piece of material (which we will presume to be copper) may be placed
across the mouth of the flask, or container, by which the gas is admitted and
withdrawn, or a special passage, or opening may be made for the said disc of
copper or the like. The disc may be firmly held gas tightly in place by screwing
it between male and female knife edges on the parts between which it is confined.
On a dangerous elevation of pressure occurring inside the flask cylinder or the
like the disc of copper or the like will be ruptured and the pressure will be relieved
before the flask, cylinder, or the like can be ruptured by the excessive pressure.
There may be used outward of the disc of copper or the like a spring valve which
will close when the pressure has been sufficiently relieved.
Dated this 12th day of April 1894
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Flasks or Cylinders for Containing Gases under
Pressure or Liquefaction or the like.
We EVERARD HESKETH and ALEXANDER MARCET both of 23 St. Swithin's
Lane in the City of London, Engineers, 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 object of this invention is to provide in connection with flasks or cylinders
for containing gases under pressure or liquified gases or the like, means whereby on
the occurrence of abnormal pressure inside the flask, or cylinder or the like, when
charged, the pressure will be relieved without a dangerous explosion and rupture
of the flask or cylinder or the like occurring.

page_text: The
According to this invention there is employed a disc, or piece of copper, or other
material which is sufficiently strong to bear the normal pressure inside the flask,
cylinder or the like, but which is not sufficiently strong to withstand rupture when
the internal pressure has from any cause reached a degree which would render an
explosion and rupture of the flask, or cylinder, or the like liable to occur.
disc or piece of material (which we will presume to be copper) may be placed
across the mouth of the flask or container, by which the gas is admitted, and with-
drawn, or a special passage or opening may be made for the said disc of copper or
the like. The disc may be firmly held gas tightly in place by screwing it between
male and female knife edges on the parts between which it is confined.
The accompanying drawing illustrates a portion of a flask or cylinder shewing
the invention applied to a special passage at a made in the nozzle piece which
contains the opening and closing valve. is the disc of copper or the like secured
in place by the nut d and pressure piece c which may have a knife edge ring which
presses the disc into a corresponding groove in the other part so as to form a firm
joint as aforesaid. The other parts sbewn are the usual devices for opening and
closing the flask or cylinder. They may be of any suitable description and require
no explanation here." On a dangerous elevation of pressure occurring inside the
flask, cylinder, or the like, the disc of copper or the like will be ruptured and the
pressure will be relieved before the flask cylinder, or the like can be ruptured by
the excessive pressure. There may be used outward of the disc of copper or the
like a spring valve which will close when the pressure has been sufficiently
relieved.
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. In or for flasks or cylinders for containing gases under pressure or liquifaction
a disc or piece of copper or other material which will stand normal pressure in the
flask or cylinder but which will rupture and relieve the pressure when the internal
pressure becomes so great as to render explosion or rupture of the flask liable to
occur substantially as hereinbefore described.
2. In or for flasks or cylinders for containing gases under pressure or liquifaction
an orifice or passage closed by a disc or piece of copper or other material capable
of withstanding normal pressure but of rupturing and relieving pressure when
dangerous rise of pressure occurs substantially as herein before described and
illustrated in the accompanying drawing.
3. In or for flasks or cylinders for containing gases. under pressure the
combination with a disc or piece as claimed by the preceding claiming clauses of a
spring valve which will close when after the rupture of the said disc or piece
excessive pressure has been relieved substantially as hereinbefore described.
Dated this 14th day of December 1894.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, W.C., Agents.