IMPROVEMENTS IN BALL COCKS
Year: 1885

page_text: I DAVID HANCOCK of 13 Lett Road High Street Stratford in the County of
Essex Plumber and Gasfitter do hereby declare the nature of said invention for
"IMPROVEMENTS IN BALL COCKS" to be as follows:-
Ball cocks made according to this invention are suitable for high pressure as well
as for low, and their characteristics are simplicity of construction, cheapness in
making, efficiency and noiselessness in action, giving also full bore passage for the
liquid without chance of choking by sediment or plumbers' cuttings, while afording
facility for easy taking apart for inspection and repair.
The inlet is on the side of the body or casting, and the outlet is at the bottom.
The lever which carries the hollow ball or float is by a pin connected to the upper
stem of the valve which stem is formed with a slot for the end of the lever to pass
into in the usual manner. Or I may form the end of the lever with a tooth sector
which takes into a corresponding rack part on the upper stem of the valve. This
upper stem is provided with a cup-leather which forms the packing for the stem
working in the bored out upper part of the body or casting. The valve has a
leather or other suitable facing or may be ground in the seat; or the seat be
may
made of leather or other similar material which at the same time forms a joint
between the body or casting and the outlet shank which latter is screwed thereon
and can thus readily be removed therefrom thus giving access to the valve. Or if
the upper part of the body or casting (with ball cock lever) is made to screw into
the body proper I obtain the same facility for getting access to the valve but
with the additional advantage of being able to turn the ball cock lever in any
desired direction.
It will be observed from the foregoing that the internal pressure against the
underside of the cup leather, and the pressure against the top of the valve partly
or wholly counterbalance each other, thus making the valve an equilibrium valve,
in fact the weight of the valve and lever and ball may advantageously be made
to almost make up equilibrium. The free and full water passage prevents the
accumulation of sediment or plumber's cuttings on the valve seat.
BREWER & JENSEN,
For the Applicant.

page_text: Improvements in Ball-cocks.
I, DAVID HANCOCK, of 13 Lett Road High Street, Stratford, in the County of
Essex, Plumber and Gas Fitter, 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, reference being had to the
accompanying drawings and to the letters of reference marked thereon, that is
to say :-
Ball cocks made according to this invention are suitable for high pressure as well
as for low, and their characteristics are simplicity of construction, cheapness in
making, efficiency, and noiselessness in action, giving also full bore passage for the
liquid without chance of choking by sediment or plumbers' cuttings, while affording
facility for easy taking apart for inspection and repair.
The inlet is on the side of the body or casting, and the outlet is at the bottom.
The lever which carries the hollow ball or float is by a pin connected to the upper
stem of the valve, which stem is provided with a slot for the end of the lever to
pass into in the usual manner. Or, I may form the end of the lever with a tooth
sector which takes into a corresponding rack part on the upper stem of the valve.
This upper stem is provided with a cup leather which forms the packing for the
stem working in the bored out upper part of the body or casting. The valve has
a leather or other suitable facing, or may be grooved in the seat, or the seat may
be made of leather or other similar material, which at the same time forms a joint
between the body or casting and the outlet shank which latter is screwed thereon
and can thus readily be removed therefrom, thus giving access to the valve. Or, if
as particularly shewn at Figure 3, the upper part of the body or casting (with ball
cock lever) is made to screw into the body proper I obtain the same facility for
getting access to the valve, but with the additional advantage of being able to turn
the ball cock lever in any desired direction.
Figure 1 of the accompanying drawings is a vertical section of an automatically
acting cock constructed according to my invention. Figs. 2, and 3 are vertical
sections of similarly constructed cocks. Similar letters of reference refer to like
parts in all the Figures.
A is the water inlet and B is the water outlet. C is the valve stem, and D is
the slot in same. E is the lever for operating the valve. F is the upper cup
leather. G is the valve seat which may have a leather, india rubber, or other
suitable seating as shown at Figures 1 and 2, or the valve may carry the leather
as shewn at Figure 3. H is the outer shank for removing the stem O when
required.
At Figure 1 the valve portion of the stem is guided on to the seating G over the
guides J, and at Figure 2 the valve itself carries the guides, K is a spring for
keeping the valve on its seating. The water enters through the inlet A and
pressing on the enlarged portion of the stem C, and the under edge of the cup
leather F; the lever E falling lifts the valve C and admits the water to the body
of the valve, and thence through the exit passage B. The lever E is operated
automatically, or by hand.

page_text: It will be observed from the foregoing that the internal pressure against the
underside of the cup leathers, and the pressure against the top of the valve, partly
or wholly counterbalance each other, thus making the valve an equilibrium valve;
in fact the weight of the valve and lever, and ball may advantageously be made
to almost make up equilibrium. The free and full water passage prevents the
accumulation of sediment or plumbers' cuttings on the valve seat.
Having now particularly described and ascertained the nature of this Inven-
tion, and in what manner the same is to be performed, I declare that what
I claim is:
In cocks or valves, the mode and means employed of causing the pressure to act
on the plunger in order to counterbalance the pressure acting on the under edge of
the cupleather whereby the valve becomes an equilibrium valve, all substantially
as and in the manner herein before described with reference to the accompanying
drawings.