An Improved Ball Cock for Water Cisterns.
Year: 1899

page_text: Date of Application, 27th July, 1899-Accepted, 30th Sept.,
1899
COMPLETE SPECIFICATION.
An Improved Ball Cock for Water Cisterns.
We, HENRY GEORGE BEDELL, Plumber, and JOHN WELSBY, Engineer, both
of 54, Lambton Quay, Wellington, in the Colony of New Zealand, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:
This invention relates to ball cocks for water cisterns which are opened by
the descent of a floating ball attached to the end of a lever and the object of the
invention is so to construct the cock that it may be cheaply manufactured, and
the ball made readily to fall in any required position in the cistern.
A further object of the invention is to prevent the objectionable noise caused
by the issuing water, especially when the cock is closing.
In our invention the lever is fulcrumed to the bottom of the cock and so that
it bears against the projecting stem of a valve within the cock.
The lower part of the valve stem is made to project upon the side of the port
through which the water passes, thus leaving a free passage for the latter; and
the upper part of the said stem enters a hole in the cap. The valve is thus
efficiently guided, and chattering of the valve upon its seat is prevented.
The cap of the cock is made separately from the body, and ready access to the
valve and seat and ease of construction, are thus obtained.
The issuing of the water is rendered noiseless by making the valve to open
against the pressure of water in the mains and consequently close with the
pressure, or in the case of a valve opening with the pressure this end may be
ensured by providing a chamber beneath the valve seat, which fills with water
whilst the valve is open.
Upon the accompanying drawings:
Figure 1 is a side view of a ball cock which closes with the pressure of water,
and shewing a lever and ball in position.
Figure 2 is an end view of the same.
Figure 3 is a vertical section on line A-B, Figure 2.
Figure 4 is a side view of a cock closing against the pressure.
Figure 5 is a vertical section of the same on une C-D, Figure 4.
Figure 6 is a vertical section of a cock closing against the pressure, and
provided with a water chamber.
Similar figures of reference indicate corresponding parts throughout the views.
The lever (1) is fulcrumed to the cock (2) by the pin (3) within the jaws (4).
The lever bears against the projecting stem (6) of the valve (7), in Figures 1, 2
and 3 by its short end (5). The long end of the lever has an ordinary float
ball (13). The steem of the valve passes upwards and is received within the
boss (S) of the cap (9), where it is provided with a groove or flat face (20) to
prevent a vacuum forming above the stem, and the lower part of the said stem
passes through the body (2) of the cock, the water port (10) being shaped as
shown by Figure 3. The short end (5) of the lever of cocks shewn by Figures 4,
5 and 6 acts as a stop against the body (2) to prevent the float ball descending
"

page_text: too low, and the valve (7) is prevented from falling too far after the lever has
left it by the boss (21) resting upon the bottom of the body (2).
The cap (9) screws at (15) upon the body (2) and is screwed at (11) to fit the
water main pipe.
Access to the interior of the cock is readily obtained-by- removing the lever (1)
with its ball (13) and unscrewing the body (2) from the cap (9) without dis-
connecting the water pipes.
The valve seat (16) may be easily faced at the time the screw thread (15)
is cut.
By increasing or decreasing the thickness of the washer (17) the body (2) may
be made to screw home upon the cap (9) with the lever (1) and ball (13) at any
desired angle to the said cap. The valve may thus be readily adjusted to be used
at the end or side of the cistern as desired.
In the modification shewn on Figure 6 a chamber (18) is formed below the
valve seat (16). This said chamber filled with water immediately the valve (7)
is opened and a water cushion is thus formed which prevents noise by the
issuing water.
Noiselessness is effected in the cock shewn on Figures 1, 2 and 3 by making
the valve (7) to open against the pressure of water in the mains, the descent
of the ball (13) lifting the said valve (7) from its seat (16).
By making the body part (2) separate from the cap (9) the valve seat (16) may
be readily manufactured, repaired or renewed.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
(1) In a ball cock, in combination, a body part screwed to a cap, a valve, and
a valve seat, a valve stem guided above and below the valve, and a lever and
float ball to operate the valve, substantially as set forth herein.
(2) In a ball cock, in combination, a body part screwed to a cap, a valve open-
ing against the pressure of the water in the main, a valve seat, a valve stem
guided above and below the valve, and a lever and float ball to operate the
valve, substantially as set forth herein.
(3) In a ball cock, in combination, a body part screwed to a cap, a valve,
and a valve seat, a valve stem guided above and below the valve, a chamber
below the valve seat to hold water, and a lever and float ball to operate the valve,
substantially as set forth herein.
(4) A ball cock made in two parts for convenience and ease of manufacture,
and so united that the float ball and lever may be made to operate in any desired.
part of the cistern, and so that the said two parts may be readily separated for
examination, repair, or renewal, substantially as set forth herein.
(5) A ball cock for water cisterns, consisting of parts, in combination, con-
structed, arranged, and operating substantially as set forth herein.
Tatad this 27th day of July 1899
OBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.
Chartered Patent Agent,
70 Chancery Lane, London, W.C., Associate Agent.