Improvements in Cocks and Valves for Steam Boilers and other like Purposes.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Cocks and Valves for Steam Boilers and other like
Purposes.
I, JOHN GEORGE WALLIKER, of Hodges & Walliker, Limited, Barry Dock, in
the County of Glamorgan, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to improvements in cocks and valves for steam boilers
and other like purposes, and the object of it is to provide an arrangement to
enable the cock or valve to be removed from the boiler or the like, without releas-
ing the pressure, or running out the boiler. To effect this purpose, I attach to the
boiler a hollow fitting which is screwed into the plate at the point where the tap
is usually inserted. It has a neck or bore through its centre at each end, of the
same capacity as the valve or cock, the valve projecting inwards through the outer
end of the said fitting and reaching so far inside as to allow of a side aperture or
passage being made in the stem of the valve, its end being preferably closed.
The said fitting is somewhat enlarged internally between the two necks so as to
allow of a ball or other form of valve being placed therein of sufficient diameter
to entirely close the opening through which the stem of the valve passes, so that
when the said stem is removed, the valve, by means of the pressure behind it,
shall close up the said opening; the defective valve or cock can then be repaired
or renewed and replaced without any escape of steam or water from the boiler,
or its equivalent.
Instead of making the stem or end of the valve as before stated, I make a loose
piece of the same shape as the end of the valve above described and place it in
the opening of the attachment, so that it can be entirely free from the stem of
the valve or cock and thus enable my attachment to be used with any existing
form of valve or cock.
Dated the 11th day of August 1898
PHILLIPS & LEIGH,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Cocks and Valves for Steam Boilers and other like
Purposes.
I, JOHN GEORGE WALLIKER, of Hodges & Walliker, Limited, Barry Dock, in
the County of Glamorgan, 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 improvements in cocks and valves for steam boilers

page_text: and other like purposes, and the object of it is to provide an arrangement to
enable the cock or valve to be removed from the boiler or the like, without releas
ing the pressure, or running out the boiler. To effect this purpose, I attach to the
boiler a hollow fitting which is screwed into the plate at the point where the ta
is usually inserted. It has a neck or bore through its centre at each end, of the
same capacity as the valve or cock, the valve projecting inwards through the outer
end of the said fitting and reaching so far inside as to allow of a side aperture o
passage being made in the stem of the valve, its end being preferably closed
The said fitting is somewhat enlarged internally between the two necks so as to
allow of a ball or other form of valve being placed therein of sufficient diameter
to entirely close the opening through which the stem of the valve passes, so that
when the said stem is removed, the valve, by means of the pressure behind it
shall close up the said opening; the defective valve or cock can then be repaired
or renewed and replaced without any escape of steam or water from the boiler
or its equivalent.
Instead of making the stem or end of the valve as before stated, I may make a
loose piece of the same shape as the end of the valve above described and place it in
the opening of the attachment, so that it can be entirely free from the stem of
the valve or cock and thus enable my attachment to be used with any existing
form of valve or cock.
I will now proceed to describe my invention with the aid of the accompanying
drawings in which; —
Figure 1 represents in side elevation an ordinary screw-down valve with my
auxiliary valve attachment fitted on its left-hand end.
Figure 2 represents in side elevation an ordinary cock or plug valve with my
auxiliary valve attachment fitted on its left-hand end.
Figure 3 is a longitudinal section of Figure 1.
Figure 4 is a longitudinal section of Figure 2, and
Figure 5 is a transverse section of the auxiliary valve box, taken on the line 5-5
of Figure 3.
a is the hollow fitting forming the auxiliary valve box, the rear end b of which
is screw-threaded as shewn, or otherwise formed for its convenient and steam-
tight attachment to the boiler. c is the neck or bore of this fitting and it will
be seen that it equals that d of the inlet channel of the screw-down valve or cock.
This auxiliary valve box a is preferably made in two parts united by screw-threads
or other suitable device as at e to enable the ball f to be inserted. The ball
valve having been inserted therein this valve box is united steam-tight to one
end of the body of the screw-down or other valve or cock as shewn, and becomes
a longitudinal extension of the said valve or cock body and forms an auxiliary
valve.
The stem
of the ordinary valve or cock which projects into the auxiliary
valve box a is formed with notches or apertures to allow the steam to pass freely
through on its way to or from the ordinary valve.
These notches might be replaced by slots formed in the sides of the projecting
end g.
The valve box a encasing or containing the ball f is formed with guides i
which permit the said ball to roll freely longitudinally but prevent too much
lateral play and keep it in aligument with the bore of the valve port; the steam
passing freely about the ball f and through the orifices h.
The valve seat j for the ball f is formed at the end of the projection g. There
is also a valve seat formed on the box a at k so that when the ordinary valve or
cock is removed the ball f will seat itself here and prevent escape of steam; the
pressure at the back of the ball f keeping it tightly pressed against the seat k.
By this means it will be seen that the ordinary steam valve or cock may be
removed at will from the boiler for repair or renewal, for instance, when steam
is up and no escape of steam will take place as the auxiliary valve f is by the
force of the steam pressed closely upon the seat and thus prevents all exit. When

page_text: the ordinary valve or cock is attached to the auxiliary one the end g forces the ball f
away from the seat k and so allows the steam to pass again through the valves, as
desired.
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. The combination with a steam valve or cock of an extension of one end of
the body of said valve or cock said extension being provided at or near its
extremity with apertures, as and for the purpose described and set forth.
2. The combination with a steam valve or cock having an extension at one end
of its body, said extension possessing holes or apertures at or near its extremity,
of an auxiliary valve consisting or a valve box one end of which is removably
united by means of screw-threads or otherwise, to the extension piece and the
other end of which is adapted to be united by means of screw-threads or otherwise
to the shell of the boiler, a valve seat at the front end of said auxiliary valve box
and a valve or ball adapted to close the front orifice steam-tight when the ordinary
valve or cock is removed, as and for the purpose described and set forth.
3. The combination with a boiler and a steam valve or cock, of an auxiliary
valve, as and for the purpose described.
Dated 1
111 1
1000
PHILLIPS & LEIGH,
22, Southampton Buildings, Chancery Lane, W.C.,
Agents for the Applicant.