Improvements in Ball or Float Cocks.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Ball or Float Cocks.
I, JOHN JONES of 40 Sydney Street, Chelsea in the County of Middlesex, Builder,
do hereby declare the nature of this invention to be as follows:-
This invention has reference to ball or float cocks and its chief objects are to obtain
a full bore or passage way through the cock until the valve is almost actually closed;
to prevent concussion or shock from the sudden or rapid shutting off of the flow of
water or liquid; and to provide for adjusting the valve in case it becomes worn
or leaky.
In a cock constructed according to my invention the cock body has in addition to
a side inlet for the water or liquid a side outlet communicating with a mouth or
discharge pipe. Between the inlet and the outlet is a seat for a valve of india rubber
or other suitable material. The borly of the valve is preferably cylindrical and its
upper part rounded or conical. It is placed round a central rod or pin formed with
a flange or shoulder at bottom against which the lower part of the valve bears for
the purpose hereinafter set forth. The rod or pin is carried by the valve stein and is
preferably free to turn axially thereon. The part of the body of the cock below the
valve is of larger diameter than the valve so that when the valve is open the water
that enters the cock and passes through the valve opening can flow between the body
of the cock and the body of the valve to the outlet. The area of the annular space
between the cock body and the valve body should be at least equal to that of the outlet.
The valve stem passes through the lower end of the body of the cock which is closed
except for the passage of the stem; the stem is slotted to give passage to the float
lever which is preferably centred to the lower part of the mouth or discharge piece.
The cock has a chamber above the inlet and in communication therewith; this chamber
is bermetically closed at top by a cap and is always full of water.
The action of the cock is as follows:-When the float lever descends it draws down
the valve stem and valve so that the water from the inlet flows through the valve
opening and through the annalar space around the valve body to the outlet com-
municating with the mouth or discharge piece. As the float lever rises owing to
the gradual filling of the cistern or tank the valve stem and valve also rise but
owing to the construction and arrangement of the parts as above described the valve
leaves a water way equal to a full bore until it has practically reached its seat.
A very slight further rise closes the valve. Such a rapid or sudden shutting off of
the flow of water tends to cause concussion in the pipes but this is obviated in my
improved cock by means of the water in the chamber hereinbefore described at the
upper part of the cock. The water in this chamber acts as a sort of hydraulic buffer
and thereby absorbs any sudden increase of pressure due to the sudden stoppage of
the flow of water.
In case the valve becomes worn or leaky I expand it by screwing up a nut
upon the upper end of its central rod or pin. The india rubber thus becomes
compressed between the nut and the flange or shoulder hereinbefore described and
consequently expands at the periphery.
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents..

page_text: Improvements in Ball or Float Cocks.
1, JOHN JONES of 40 Sydney Street, Chelsea in the County of Middlesex,
Sanitary 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 has reference to ball or float cocks and its chief objects are to
obtain a full bore or passage way through the cock until the valve is almost
actually closed; to prevent concussion or shock from the sudden or rapid.shutting
off of the flow of water or liquid; and to provide for adjusting. the valve .in case it
becomes worn or leaky.
The accompanying drawing is a sectional elevation of a ball or float cock con-
structed according to my invention:-
a is the float, the float lever, c the supply pipe and d the cock body. The boily d
has.in addition to a side inlet e for the water or liquid a side outlet communicating
with a mouth or discharge,piece.g. Between the inlet and the outlet is a seat h for
a valve of india rubber or other suitable material. The body of the valve is
preferably cylindrical and its upper part rounded or conical as shown. It is placed
around a central rod or pin.k formed with a flange or shoulder at bottom against
which the lower part of the valvej bears for the purpose hereinafter set forth. The
rod or pin k is carried by the valve stem mand is preferably free to turn axially
thereon; it is shown as connected to the stem m by a screw which passes through
the side of the stem and engages in a groove p in the rod k. The part of the
body of the cock below the valve seat is of larger diameter than the valve so that
when the valve is open the water that enters the cock by the inlet e and passes
through the valve opening can flow between the body of the cock and the body of
the valve to the outlet f. The area of the annular space between the cock body
and the valve body should be at least equal to that of the outlet f. The valve.stem m
passes through the lower end of the body of the cock which is closed by a screw
plugs except for the passage of the stem; the stem is slotted at t to give passage to
the float lever which is preferably centered to the lower part of the mouth or
.discharge piece.g as shown. The cock has a chamber above the inlet e aud.in
communication therewith; this chamber is hermetically closed at top by a cap
and is always full of water.
The action of the cock is as follows:-When the float lever descends it draws
down the valve stemm and valve jso that the water from the inlet e flows through
the valve.opening and through the annular space, around the valve body to the
outlet/communicating with the month or discharge piece.g. As the float lever b
rises owing to the gradual filling of the cistern or tank the valve stem m and valve j
also rise but owing to the construction and arrangement of the parts as above
described the valve leaves a water way equal to a full bore until it has practically
reached its seat. A very slight further rise closes the valve. Such a rapid or sudden
shutting off of the flow of the water tends to cause concussion in the pipes but this
is obviated in my improved cook by means of the water in the chamber u at the
-apper part of the cock. The water in this chamber acts as a sort of hydraulic
buffer and thereby absorbs any sudden increase of pressure due to the sudden-stoppage
of the flow of water.
In case the valve becomes worn or ledky I expand it by screwing up a nut w
upon the upper end of its central rod or pin h. The india rubber thus becomes
compressed between the nut w and the flange or shoulder herein before described
sind consequently expands at 'the periphery."

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a ball or float cock, a side outlet below the inlet and leading to a mouth or
discharge piece, in combination with a valve and valve seat between the said inlet
and outlet and an enlarged part of the cock body below the valve seat, substantially
as hereinbefore described whereby a full bore or passage way through the cock is
obtained until the valve is almost actually closed.
2. In a ball or float cock a water chamber above the valve and in communication
with the inlet substantially as hereinbefore described whereby concussion in the pipes
is obviated when the flow of water is rapidly or suddenly stopped.
B. In a ball or float cock a valve of compressible matorial mounted on a central
rod or pin between a shoulder on the pin and a nut also on the pin, substantially as
herein before described whereby the valve can be screwed up when it becomes worn
or leaky.
4. The improved valve or float cock constructed and acting substantially as
hereinbefore described and illustrated in the accompanying drawings.
Dated this 5th day of November 1896
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.