Year: 1888

page_text: Date of Application, 24th Jan., 1888
Complete Specification Left, 26th May, 1888
Complete Specification Accepted, 3rd Aug., 1888
We, CHARLES EAST of Burford Oxon and CILO WILFRED EAST of Burford Oxon
Engineers, do hereby declare the nature of this invention to be as follows:-
:-
The primary object of this invention is to enable various kinds of valves to be
examined or repaired without cutting off the pressure; but provision is also made for
allowing a dribble of water to pass constantly when required to prevent freezing or
for other purposes the facilities provided for changing the valve without cutting off
the pressure enabling this to be done. These valves &c. are chiefly designed for use
with water but are applicable for use with other fluids.
The most important feature of the invention is the employment of a supplemental
valve (preferably a spherical one) which is kept off its seat by an addition to or
portion of the working valve during ordinary use; but which upon the withdrawal of
the working valve for repair, examination or other purpose is forced by the pressure
against a seat provided for the purpose thus stopping the flow of the fluid until the
working valve is replaced.
In applying this invention to a screw down bib tap, we provide a chamber for the
supplementary ball valve and an extension if necessary to the working valve to keep
the ball away from its seat; the screw chamber we make large enough to allow of
the working valve passing through it. We prefer also to have a duplicate of the
working valve with a small hole through it which allows of a dribble of water passing
through chiefly for the purpose of preventing freezing. These two working valves
can be so easily and quickly exchanged by reason of the supplemental valve that it is
worth while to exchange.them when required.
In the case of a ball cock the principle of working is the same but we find it con-
venient to use a tap made in two parts screwed together in such manner that the
working valve bib and float all come away together, the ball chamber being in the

page_text: back part and the ball being introduced from the back before the cock is fixed; a
wire may be placed across the opening to prevent the ball from passing out.
In the case of a hydrant we provide space for the usual screw-down valve to be
withdrawn so far as to allow the ball to reach its seating; the cover can then be
removed taking with it the working valve screw cup leather and its chamber &c..
The valves or seatings may be made of metal, india-rubber or other suitable
materials.
The above description without binding us to the precise details of construction or
application of the invention will serve to indicate its nature and how it may be
carried out.

page_text: Improvements in Taps, Valves, Hydrants, and the like.
CHARLES EAST and CILO WILFRED EAST both of Burford, Oxon, Water Works
Engineers, 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 :—
The primary object of this invention is to enable various kinds of valves to be
removed for examination or repairs without cutting off the pressure; but provision is
also made for allowing a dribble of water to pass constantly when required to prevent
freezing in the pipes or for other purposes, the facilities provided for changing the
valve-stop without cutting off the pressure enabling this to be done. The invention is
chiefly designed for use in conjunction with valves for water but it is also applicable
for those used for controlling other fluids.
The most important feature is the employment of a supplemental valve (preferably
a spherical one) which during ordinary use is kept off its seat by contact with the
working valve or some part added thereto, but which supplemental valve upon the
withdrawal of the working valve for repair, examination or other purpose is forced by
the pressure against its seat thus stopping the flow of the fluid until the working
valve is replaced.
In the accompanying drawings we have illustrated the manner in which my inven-
tion may be used in conjunction with bib taps, hydrants and ball valves and these
examples will suffice to indicate the manner in which it may be applied to other
descriptions of taps and valves.
Fig. 1. is a sectional elevation of an ordinary screw down bib tap, Fig. 2 a section
of a hydrant and Fig. 3 a section of a ball cock. Fig. 4 is a detail.
Referring to Fig. 1 it will be seen that the valve casing A is provided with a
chamber for the reception of a ball C which is preferably formed of indiarubber
with a wood core and will float in water.
This ball is introduced through the bottom of the chamber the cover B₁ of which
is made removable for the purpose. The working valve D is introduced through the
internally screwed chamber D and is provided with a central pin or projection E on
its underside which pin is of sufficient length to prevent the ball C from rising too
near the underside of the valve seating D2 and so obstructing the flow of water when
the working valve is fully opened. This pin or distance piece E may in some cases
be attached to the valve C and the same result will be obtained but it need not
necessarily be attached to either valve if means be provided for maintaining it in such
a position that it will keep the valves apart.
If however it is desired to remove the working valve D for examination or repairs,
this can be done by removing the cap A¹ and screwing the plug D³ entirely out. The
ball will then rise and rest against the underside of the valve seating and close the
outlet & the pressure of the water keeping it in position until the working valve D
is replaced. By having a duplicate of the working valve D with a small hole D¹

page_text: through it as shown in detail Fig. 4 a constant dribble of water can be allowed to
run in frosty weather and thus the water in the pipe or tap may be prevented from
becoming frozen. These valves D can be so readily exchanged by reason of the supple-
mental valve that it is worth while to do so under any circumstances where a constant
flow of a small stream of water is desirable.
In the section of a hydrant shown in Fig. 2 the ball C is seen in the position it is
intended to occupy when the working valve D is removed. Space is here provided
in the casing A to allow the valve D to be withdrawn sufficiently to permit the ball
to reach its seating before the cover F is removed. The outlet d being closed the
cover F and with it the working valve D and its connections can be removed with
safety.
In the ball cock shown in Fig. 3 the principle of working is the same as in the
other cases except that when the working valve D is closed the ball C is in position on
its seat and is removed by the pin E when the valve D is opened..
We find it convenient in ball cocks to use a tap made in two parts A A² screwed
together in such a manner that the part A, working valve D, bib G and float H come
away together when the two parts of the tap are separated the ball chamber B being
in the other part A2 and the ball being introduced from the back before the cock is
fixed. If necessary a wire may be placed across the inlet a to prevent the ball from
getting displaced.
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 tap or valve such as described the combination with the ordinary working
valve D of a supplemental valve such as C capable of being forced onto its seat by
the pressure of the water or other fluid upon the sufficient withdrawal of the working
valve substantially as and for the purpose described and illustrated in the accompanying
drawings.
2. In a tap or valve such as described having a supplemental valve such as C the
combination with the two valves of a distance piece such as E for the purpose of
preventing the valve C from coming into operation until the working valve is with-
drawn from its seat to the required extent substantially as described and illustrated in
the accompanying drawings.
3. The combination with a tap or valve such as described and having a supplemental
valve as C of a leaking valve such as D Fig. 4 substantially as and for the purpose
described and illustrated in the accompanying drawings.