An Improved Valve for Vessels for Containing Carbonic Acid and other Gases under Pressure.
Year: 1898

page_text: Date of Application, 4th July, 1898
Complete Specification Left, 4th Apr., 1899-Accepted. 2nd June, 1899· ·
PROVISIONAL SPECIFICATION,
An Improved Valve for Vessels for Containing Carbonic Acid and
other Gases under Pressure.
I, IGNAZ QURIN, Engineer, of 20, Deutscher Ring, Cologne, in the Province of
Rhineland and Kingdom of Prussia, do hereby declare the nature of this inven-
tion to be as follows:-
;--
In the screw down valves for fluid carbonic acid and other gases of high tension
the following drawbacks have hitherto mostly shown themselves:
Firstly a very great force is necessary in order by means of the hand wheel to
press the piston so tightly on the opening of the valve, that really no gas can
escape; secondly the valve closing frequently becomes loose, even if the valve-
piston is screwed down ever so tightly on its seat, owing to the shaking and
concussions on the long journeys by rail and car, more especially during the
latter, since the cars often go over rough pavement and bad roads. This causes
the contents of the gas-holders-mostly the well known steel-bottle-to escape
entirely or partly during the transport, so that the consignments on arriving
at their destination often have lost most of their value.
It is the object of the present invention to avoid these drawbacks.
This is done on the one hand by an arrangement being made in this valve
which admits of the valve-piston being well pressed down on its seat thus closing
it absolutely tight with a small amount of force, on the other hand by two
safety devices which effectively and reliably prevent the escape of the gas during
the transport of the gas-holders riz.: firstly a device which prevents the loosen-
ing of the stuffing-box nut-being thus a kind of counter nut for the same,
and then a device which makes it impossible for the commonly used hand
wheel moving the valve-piston up and down to turn of itself.
In the accompanying drawing the improved valve is shown in Fig. 1 in vertical
section on two planes along the section line a-b of Fig. 3, in Fig. 2 in side view,
while Fig. 3 shows a horizontal section to c-d of Fig. 1, and Fig. 4 shows a
detail in an outer and side view.
In order to obtain a tight closing of the valve with the least possible force,
the following arrangement is made in the valve.
The hand wheel e, which is used for screwing down the valve carries on its
lower side in the middle a hollow pin f which with an external thread can be
moved or screwed up and down in the inner thread of the stuffing-box nut a
having the shape of a press-box.
The hollow pin f has also a thread on its inner side which, however, is finer
than the outer thread, thus having more threads for the same length than on
the outside. The outer thread of the valve-piston c fits into the fine inner thread
of the pin f.
The inner and outer thread of the pin f have the same direction.
If the hand wheel,e is turned in such a manner that its hollow pin f in the
stuffing-box nut a screws itself upwards, then, since the fine inner thread of the

page_text: pin works against the corresponding outer thread of the valve-piston c, the
latter is raised, but always less than the pin f rises in the stuffing-box nut u.
For instance, if the fine thread of the piston c has twice as many threads to
the unit of length as the outer thread of the pin f, the piston c will only rise
half of the distance upwards that the hand wheel e or its pin f is raised toward
the stuffing-box nut a.
Thus in order to raise or lower the piston the distance of one thread two
complete revolutions of the hand wheel must be made in the nut a. It will
thus be seen that by turning the hand wheel e a greater force can be exerted
on the piston c than hitherto, so that with the same amount of force as hitherto,
the valve can be closed much tighter and more reliably, since, in contradistinc-
tion to the procedure when the valve is opened, that is when the hand
wheel is screwed up, on the latter being screwed down the piston c moves a
lesser distance in order completely close the opening o in the valve. The pin f
could of course be made in one piece with the body of the hand wheel, but in 1
consideration of the separate construction being easier, and having regard to
the fitting together of the various parts which in the present construction must
be pushed or screwed into each other, the pin f is in this case separated from
the hand wheel e and fitted with an upper smooth projection f into a corre-
sponding square or round opening in the nave e of the hand wheel e and held
in position by the round headed screw 9 or by a nut.
While by means of the above arrangement, it is possible to tightly close the
valve-opening o by the piston c, the devices for securing the different parts
against becoming loose during the transport are as follows:
The stuffing-box nut a which is formed like a coupling box and can be screwed
up and down with its exterior thread in the corresponding inner thread of the
upper end
of the valve-body (the so-called pot), whereby its chief object of
tightening the valve-spindle c by pressure on the packing d, is attained, lays
itself with its upper flange-like end on the end of a box serving as counter
mut for securing the stuffing box nut a and therefore capable of being screwed
up and down with an inner thread on the corresponding outer thread of the
upper end 6 of the valve-body and thereby pressed more or less against the
stuffing-box nut a or its flange, so that the latter can be screwed very tight in
the position once assumed and is immoveably held therein.
In this manner a loosening of the stuffing-box nut a, and thereby of the
packing d surrounding the valve-spindle c during the transport is entirely pre-
vented.
But in order also to prevent the slightest turning of the hand wheel e, and
thereby the slightest raising of the valve-spindle c by shocks, concussions and
the like, during the transport, the following safety device is employed.
The hand wheel o has on its lower side a box-like projection & which encloses
the outer surface of the counter-nut and also the outer surface of the flange
of the stuffing-box nut a, if this flange is given the same diameter as the stuffing-
box-nut.
This projection & ends downwards in a neck-like piece k made thinner by
turning, to which is joined a ring m, tapering towards the point like a cone.
This ring as well as the neck A¹ are, as is plainly to be seen in Fig. 4, is broken
by several slits 7 on the surface and thus split into several strips, whereby they
act with elastic force.
The box has an outer thread and over this is screwed a hold fast ring n
whose upper cylindrical end engages with its inner thread the outer thread of
while the inner surface of its lower narrowed hollow cone-like end lays itself
over the elastic strips, (forming the ring m) pressing them against each other
and against the circumference of the counter-nut i of the stuffing-box.
The more, therefore, the ring n. is screwed upwards, the tighter are the strips
pressed against the counter nut i, and the more firmly is the hand wheel secured
against an involuntary turning.

page_text: In order that the ring n may be easily turned by hand it is provided with a
rough surface or projections q which serve as a handle.
Dated this 30th day of June 1898.
An Improved Valre for Vessels for Containing Carbonic Acid and
other Gases under Fressure.
I, IGNAZ QURIN, Engineer, of 20, Deutscher Ring, Cologne, in the Province of
Rhineland and Kingdom of Prussia, do hereby declare the nature of this inven
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:.
In the screw down valves for liquid carbonic acid and other gases of high tension
the following drawbacks have hitherto mostly shown themselves: Firstly a
very great force is necessary in order by means of the handwheel to
press the piston so tightly on the opening of the valve, that really no gas can
escape; secondly the valve-closing frequently becomes loose, even if the valve-
piston is screwed down ever so tightly on its seat, owing to the shaking and
concussions on the long journeys by rail and car, more especially during the
latter, since the cars often go over rough pavement and bad roads. This causes
the contents of the gas-holders-mostly the well known steel-bottles-to escape
entirely or partly during the transport, so that the consignments on arriving
at their destination often have lost most of their value.
It is the object of the present invention to avoid these drawbacks.
This is done on the one hand by an arrangement being made in this valve
which admits of the valve-piston being well pressed down on its seat thus closing
it absolutely tight with a small amount of force, on the other hand by two
safety devices which effectively and reliably prevent the escape of the gas during
the transport of the gas-holders viz.; firstly a device which prevents the loosen-
ing of the stuffing-box-nut-being thus a kind of counter nut for the same,
and then a device which makes it impossible for the commonly used hand-
wheel moving the valve-piston up and down, to turn of itself.
In the drawing filed with the Provisional Specification the improved valve is
shown in Fig. 1 in vertical section on two planes along the section line a--b
of Fig. 3, in Fig. 2 in side view, while Fig. 3 shows a horizontal section to
c-d of Fig. 1, and Fig. 4 shows a detail in an outer end side view.
In order to obtain a tight closing of the valve with the least possible force,
the following arrangement is made in the valve.
The handwheel e, which is used for screwing down the valve carries on its
lower side in the middle a hollow pin f which with an external thread can be
moved or screwed up and down in the inner thread of the stuffing-box-nut a,
The hollow pin f has also a thread on its inner side which, however, is finer
than the outer thread, thus having more threads for the same length than on
the outside. The outer thread of the valve-piston c fits into the fine inner thread
of the pin f.
The inner and outer thread of the pin f have the same direction.
If the handwheel e is turned in such a manner that its hollow pin f in the
stuffing-box-nut a screws itself upwards, then, since the fine inner thread of the

page_text: pin works against the corresponding outer thread of the valve-piston c, the
latter is raised but always less than the pin f rises in the stuffing-box-nut a.
For instance, if the fine thread of the piston c has twice as many threads to
the unit of length as the outer thread of the pin f, the piston c will only rise
half of the distance upwards that the handwheel d or its pin f is raised towards
the stuffing-box-nut a.
Thus in order to raise or lower the piston the distance of one thread two
complete revolutions of the handwheel must be made in the nut a. It will
thus be seen that by turning the handwheel e a greater force can be exerted
on the piston c than hitherto, so that with the same amount of force as hitherto,
the valve can be closed much tighter and more reliably since, in contradistinc-
tion to the procedure when the valve is opened, that is when the hand-
wheel is screwed up, on the latter being screwed down, the piston c moves a
lesser distance in order completely close the opening o in the valve. The pin f
could of course be made in one piece with the body of the handwheel, but in
consideration of the separate construction being easier, and having regard to
the fitting together of the various parts which in the present construction must
be pushed or screwed into each other, the pin f is in this case separated from
the handwheel e and fitted with an upper smooth projection fl into a corre-
sponding square or round opening in the nave e of the handwheel e and held
in position by the round-headed screw 9 or by a nut.
Whilo by means of the above arrangement it is possible to tightly close the
valve opening by the piston c the devices for securing the different parts
against becoming loose during the transport are as follows;
The stuffing-box-nut a can be screwed up and down with its exterior thread in
the corresponding inner thread of the upper end of the valve-body whereby its
chief object of tightening the valve-spindle e by pressure on the packing d, is
attained, lays itself with its upper flange-like end on the end of a box i serving as
counter nut for securing the stuffing-box-nut a and therefore capable of being
screwed up and down with an inner thread on the corresponding outer thread of the
upper end of the valve-body and thereby pressed more or less against the
stuffing-box-nut a or its flange, so that the latter can be screwed very tight in
the position once assumed and is immoveably held therein.
In this manner a loosening of the stuffing-box-nut a, and thereby of the
Packing & surrounding the valve-spindle during the transport is entirely
prevented.
But in order also to prevent the slightest turning of the handwheel e, and
thereby the slightest raising of the valve-spindle c by shocks, concussions and
the like during the transport, the following safety device is employed;
The handwheel e has on its lower side a box-like projection k which encloses
the outer surface of the counter-nut and also the outer surface of the flange
of the stuffing-box-nut a if this flange is given the same diameter as the stuffing-
box-nut. This projection ends downwards in a neck-like piece ¹ made thinner by
turning, to which is joined a ring m tapering towards the point like a cone.
This ring as well as the neck kare, as is plainly to be seen in Fig. 1, is broken
by several slits 7 on the surface and thus split into several strips, whereby they
act with elastic force.
The box has an outer thread, and over this is screwed a hold fast ring n
whose upper cylindrical end engages with its inner thread the outer thread of k.
while the inner surface of its lower narrowed hollow cone-like end lays itself
over the elastic strips (forming the ring m) pressing them against each other
and against the circumference of the counter nut i of the stuffing-box.
The more, therefore, the ring n is screwed upwards, the tighter are the strips
pressed against the counter nut i and the more firmly is the handwheel secured
against an involuntary turning.
In order that the ring n may be easily turned by hand, it is provided with a
rough surface or projections 7 which serve as a handle.

page_text: 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:-
Screw-down valve for liquid carbonic acid gas and other gases, in which
a hollow pin f at the bottom of the hand wheel e, and capable of being screwed
up and down, by means of an outer thread, in the stuffing-box nut a moves at
the same time with a finer inner thread on the valve-piston c so that on its
moving up and down for a certain distance the valve-spindle c rises and sinks a
lesser distance corresponding to the difference of the two threads, while at the
same time there is screwed on to the upper end 6 of the valve, which is provided
with an outer thread, a counter nut which is pressed more or less, on being
turned against the flange-like upper end of the stuffing-box-nut a thus pre-
venting it from becoming loose during transport, and in which furthermore there
is fitted on the hand wheel, and enclosing the counter-nut i, a socket & terminating
below in a conical ring formed of various elastic straps m, and engaged by
a ring n to be screwed with a thread on the outer thread of the socket k, the
lower cone-like end of a pressing the different straps m against each other and
against the counter-nut of the stuffing-box, so that any involuntary motion
or loosening of the hand-wheel e or of the valve-spindle c operated thereby is
rendered impossible.