Year: 1898

page_text: I, STEN ERIC ERICSON, of Bryggaregatan 2 B, Stockholm, Sweden, Mechanical
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to such valve-cocks as are provided with double valves
and especially to that class of valve-cocks in which the valve-opening is per-
pendicular or nearly so to the direction of the flow in the conduit-pipe, as for
instance stop- or tap-valves for water-pipes and such like. In these valve-cocks,
as hitherto constructed, the secondary-valve which, by fully opening of the
main-valve, closes the valve-opening has been actuated by a spring, by means of
which the secondary valve was constantly pressed against its seat opposite the
main valve. This construction has the disadvantage that rust or other sub-
stances are liable to collect upon the secondary valve, because the latter by the
Another dis-
spring is firmly pressed to its seat, when the main-valve is closed.
advantage consists therein that the valve usually has two stopping positions,
whereby a person using the valve may close the valve by means of the secondary
valve when the packing of the mainvalve is worn out. The consequence thereof
is that also the packing of the secondary-valve often is worn out, before the
main-valve is repaired. The secondary-valve is in such cases useless for the
purpose for which it was provided.
The object of my invention is a valve-cock having none of the said dis-
advantages. To this end I construct the valve-cock so that the secondary-valve
will always be moved when a current of water passes through the valve, and so
that the secondary valve does not close the valve-opening before the main-valve
is partly unscrewed.
Referring to the accompanying drawing, Fig. 1 is a vertical- and Fig. 2 a
horizontal section on the line A, B Figure 1 of a stop-valve for water-pipes
showing by way of example one way of carrying out my invention.
In the instance illustrated there is in the lower part of the casing a an inner
casing 6, which at or near the bottom is provided with openings c, through which

page_text: the current of water must pass. The secondary-valve f is arranged in the
casing 6 in such a manner, that the current of water entering through the open-
ings c always strikes the underside of the valve f and thereby lifts the same.
The valve is provided with downwardly projecting arms f, which slide on
the inside of the casing b and thus guide the valve f, when the latter is moved
up and down.
I also make the shortest distance between the two valves ƒ and g so large as
to prevent the secondary-valve f from reaching its seat h and closing the valve
opening unless the main-valve is partly unscrewed. The valves and g are
simultaneously fully open, and as a rule the valve opening can not be closed by
the secondary-valve. But when the main-valve is unscrewed or taken away, the
secondary valve will reach its seat and close the valve opening, so as to retain
the water and prevent detrimental shocks in the conduits. The closing takes place
ere the main-valve is fully unscrewed or disengaged.
When a tap-valve is opened, so that water flows through the stop-valve, the
water enters at first. the spaced between the casings a and b, and passes then
through the openings c, thereby pushing the valve f upwards against the stem g¹
projecting downward from the underside of the main-valve g. The valve f does,
however, not remain in this position, but it is put in oscillating motion by the
water current and falls again down to the bottom of the casing a, when the flow
of water ceases.
In the water conduit of a building the stop-valve is usually open, and the
secondary-valve f has the position shown in Fig. 1, when no
current passes
through the valve. By opening one or more tapvalves in the building the
valve is lifted. By closing all the tapvalves the valve f drops down.
The openings c in the wall of the casing b are preferably provided with close-
wire-netting or instead of the openings c I sometimes use strainers with small
openings, thus preventing rust and other solid bodies from passing through the
stop-valve into the branches of the conduit in the building.
The application of invention to tap-valves is obvious and needs no illustration.
Dated this Eighteenth day of October 1000
Improved Valve Cock.
I, STEN ERIC ERICSON, of Bryggaregatan 2 B, Stockholm, Sweden, Mechanical
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:
This invention relates to such valve-cocks as are provided with double valves
and especially to that class of valve-cocks in which the valve-opening is per-
pendicular or nearly so to the direction of the flow in the conduit-pipe, as for
instance stop or tap-valves for water-pipes and such like. In these valve-cocks,
as hitherto constructed, the secondary-valve which, by fully opening of the
main-valve, closes the valve-opening has been actuated by a spring, by means of
which the secondary valve was constantly pressed against its seat opposite the

page_text: main valve. This construction has the disadvantage that rust or other sub-
stances are liable to collect upon the secondary valve, because the latter by the
spring is firmly pressed to its seat, when the main-valve is closed. Another dis-
advantage consists therein that the valve usually has two stopping positions;
whereby a person using the valve may close the valve by means of the secondary
valve when the packing of the mainvalve is outworn. The consequence thereof
is that also the packing of the secondary-valve often is worn out, before the
main-valve is repaired. The secondary-valve is in such cases useless for the
purpose for which it was provided.
The object of my invention is a valve-cock having none of the said dis-
advantages. To this end I construct the valve-cock so that the secondary-valve
will always be moved when a current of water passes through the valve, and so
that the secondary valve does not close the valve and so that the secondary valve
does not close the valve-opening before the main-valve is partly unscrewed.
Referring to the drawing left with the provisional application, Fig. 1 is a
vertical- and Fig. 2 a horizontal section of a stop-valve for water-pipes showing
by way of example one way of carrying out my invention.
In the instance illustrated there is in the lower part of the casing a an inner
casing b, which at or near the bottom is provided with openings c, through which
the current of water must pass. The secondary-valve f is arranged in the
casing in such a manner, that the current of water entering through the open-
ings c always strikes the underside of the valve f and thereby lifts the same.
The valve is provided with downwardly projecting arms ft, which slide on
the inside of the casing b and thus guide the valve f, when the latter is moved
up and down.
I also make the shortest distance between the two valves f and g so large as
to prevent the secondary-valve f from reaching its seat and closing the valve
opening unless the main-valve g is partly unscrewed. The valves and are
simultaneously fully open, and as a rule the valve opening can not be closed by
the secondary-valve. But when the main-valve is unscrewed or taken away, the
secondary valve will reach its seat and close the valve opening, so as to retain
the water and prevent detrimental shocks in the conduits. The closing takes place
when the main-valve is fully unscrewed or disengaged.
When a tap-valve is opened, so that water flows through the stop-valve, the
water enters at first the space d between the casings a and b, and passes then
through the openings c, thereby pushing the valve f upwards against the stem g¹
projecting downward from the underside of the main-valve g. The valve f does,
however, not remain in this position, but it is put in oscillating motion by the
water current and falls again down to the bottom of the casing a, when the flow
of water ceases.
In the water conduit of a building the stop-valve is usually open, and the
secondary-valve f has the position shown in Fig. 1, when no
current passes
through the valve. By opening one or more tapvalves in the building the
valve f is lifted. By closing all the tapvalves the valve f drops down.
The openings in the wall of the casing bare preferably provided with close-
wire-netting or instead of the openings c I sometimes use strainers with small
openings, thus preventing rust and other solid bodies from passing through the
stop-valve into the branches of the conduit in the building.
The application of invention to tap-valves is obvious and needs no illustration
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. The combination with a valve-cock having a secondary valve adapted to
close the valve opening when the main-valve is fully open, of a secondary casing
enclosing the secondary valve and provided beneath the latter with openings
through which the fluid passes; substantially as and for the purpose set forth.

page_text: 2. In valve-cocks having a secondary-valve which will be moved from its seat
every time the main-valve is closed, the combination with the said valves of a
stem between the valves of such length as to prevent the secondary valve from
reaching its seat, unless the main valve is partly unscrewed or removed, sub-
stantially as and for the purpose set forth.
Dated this 7th day of July 1899.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester, and Birmingham.