IMPROVE- MENTS IN VALVES OR STOPCOCKS
Year: 1884

page_text: I GEORGE FREDERICK BUSBRIDGE of East Malling-Mills in the County of Kent
Paper Manufacturer do hereby declare the nature of said Invention for "IMPROVE-
MENTS IN VALVES OR STOPCOCKS" to be as follows:-
My Invention has for its object to construct valves or stopcocks in such a manner
that more than one closure of the passage past the valve or stopcock can he made
so as to give a double or a greater security against leakage than exists with valves
or stopcocks as at present constructed. The closures act independently of each
other and each is furnished with distinct means for operating it for example a
double closure may be effected by means of a hollow plug and of a disc or cone
valve the former being provided with means for giving it a motion of partial
rotation and the latter with means for forcing it to or from its seat. A tap or
valve with these means of closure may be arranged as follows:-
An outer conical casing is provided in which is contained a hollow conical plug
(preferably with its small end upwards) and also a disc valve which can be screwed
down upon a seating in the casing. The casing is preferably made in parts
connected so that they can be easily detached for getting at the valve seating for
repair or other purpose. The conical plug has an upper part projecting from the
casing and is there provided with means for turning it. The disc or cone valve
which can be closed against the aforesaid valve seating is provided with a spindle
which is screwed to engage with a screw box in or carried by the hollow plug the
said spindle projecting beyond the casing and the top of the hollow plug where it
also is provided with means for turning it. The inlet opening is situated above the
disc valve and communicates when the tap is open with an opening in the side of
the hollow plug which is open at bottom to allow of the fluid escaping to and past
the disc or cone valve. The outlet is below the seating of the disc or cone valve.
When the tap is closed the hollow plug is turned so that an unperforated part of
its side closes the inlet-the disc or cone valve being also pressed down to its seat.
To open the tap the disc or cone valve is raised from its seat by rotating its spindle
so that it rises by the screw thereon running in the screw in or carried by the
hollow plug. The said plug is then partially rotated whereby the opening in its
side is made to coincide with the inlet and there is thus established a through
passage for the fluid. To close the tap the hollow plug is first turned so as to close
the inlet and then the disc or cone valve is screwed down upon its seat to secure
the tight closure of the tap. It will be evident that more than two closures may
be employed if desired they each being provided with means for independently
operating them.

page_text: İ, GEORGE FREDERICK BUSBRIDGE of East Malling Mills in the County of Kent
Paper Manufacturer, do hereby declare the nature of said invention for "IMPROVE-
MENTS IN VALVES OR STOPCOCKS" and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :-
My Invention has for its object to construct valves or stop cocks in such a
manner that more than one closure of the passage past the valve or stop cock can
be made, so as to give a double or a greater security against leakage than exists
with valves or stop cocks as at present constructed. The closures act-independently
of each other and each is furnished with distinct means for operating it, for
example, a double closure may be effected by means of a hollow plug and of a disc
or cone valve, the former being provided with means for giving it a motion of
partial rotation and the latter with means for forcing it to or from its seat ▲ tap
or valve with these means of closure may be arranged as follows:-
I will describe my Invention with reference to the accompanying drawing which
represents a vertical section of a valve constructed according to my Invention.
An outer conical casing A is provided in which is contained a hollow conical
plug B (preferably with its small end upwards) and also a disc valve C which can
be screwed down upon a seating D in the casing A which valve seat can be
unscrewed from the casing for getting at the valves for repair or other purpose,
owing to the shape of the valve seating D it can be reversed to give a new bearing
surface.
с
The conical plug B has an upper part at 6 projecting from the casing and is there
provided with a squared exterior or other means for turning it and with a packing
box h for the spindle E the disc or cone valve which can be closed against the
aforesaid valve seating D is provided with a spindle E. which is screwed at c to
engage with a screw bar 63 (carried by the casing below the plug) as shewn in the
drawing The said spindle projecting beyond the casing A and the top of the
hollow plug B where it also is provided with a handle e' or other means for turning
it, or in place of operating the disc valve O by a screwing action the spindle E may
be without a screw and the valve be operated by raising and lowering the spindle
by means of a lever or otherwise The inlet opening G is situated above the disc
valve C and communicates when the tap is open with an opening b³ in the side of
the hollow plug B which is open at bottom to allow of the fluid escaping to and
past the diso or cone valve The outlet is below the seating of the disc or cone
valve O When the tap is closed the hollow plug B is turned so that an
unperforated part of its side closes the inlet G the disc or cone valve O being also
pressed down to its seat To open the tap the disc or cone valve C is raised from
its seat by rotating or lifting its spindle and the plug is partially rotated so that
the opening in its side is made to coincide with the inlet and there is thus
established a through passage for the fluid. To close the tap the hollow plug B is
turned so as to close the inlet and the disc or cone valve C is shut down upon its
seat to secure the tight closure of the tap.

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
1. In valves or stopcocks the employment of a double closure consisting of a
plug valve in combination with a disc or lift valve the latter being operated by a
spindle passing through the axis of the plug valve substantially as and for the
purpose hereinbefore described and illustrated in the accompanying drawings.
Dated this way of January 1000.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London, W.C.,
Agent for the said George Frederick Busbridge.