Improvements in Supply-valves for Water-closet and other Cisterns.
Year: 1890

page_text: Date of Application, 27th Mar., 1890
Complete Specification Left, 29th Dec., 1890-Accepted, 31st Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Supply-valves for Water-closet and other Cisterns.
We, ALEXANDER STALKER and THOMAS DOBBIE DAYE, both of 112 Great
Western Road, Glasgow, in the County of Lanark, Registered Plumbers, do
hereby declare the nature of this invention to be as follows:-
This invention which relates to supply valves for water closet and other systems
has for its object the provision of means whereby the pressure of water on the
valve may be counterbalanced or partially counterbalanced and the valve more
casily closed when acted on by the usual ball lever. To that end we employ an
equilibrium valve or valve having two faces against which the water bears in
opposite directions, one end of the valve being fitted in a guideway and bearing on
the usual seat formed by the discharge orifice of the supply pipe whilst the other
end fits as a piston in a tubular casing terminating, a branch taken from the supply.
pipe. The ball lever is passed through a slot in the mid part of the duplex valve
and when by the lowering of the water level in the cistern the ball falls the valve
is withdrawn from its seat at one end to open the water inlet the other end simply
moving in its casing, the pressure of water on one face of the valve being opposed
by the pressure on the other face both in opening and closing it. The apparatus.
may be placed either vertically or horizontally.
In a modified form of the apparatus two separate valves are employed and are
attached so as to be actuated by the ball lever which is centred at a point between
the valves. One valve bears on the seat formed by the water inlet orifice and is
operated in the usual way but the pressure on it is transmitted through the lever to
the second valve which is fitted as a ram or piston in a tubular branch of the
supply pipe.
Dated this Twenty-sixth day of March 1890
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in Supply-valves for Water-closet and other Cisterns.
We, ALEXANDER STALKER and THOMAS DOBBIE DAYE both of 112 Great
Western Road, Glasgow, in the County of Lanark, Registered Plumbers, 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 which relates to supply valves for water closet and other cisterns
has for its object the provision of means whereby the pressure of water on the
valve may be counterbalanced or partially counterbalanced and the valve more
easily closed when acted on by the usual ball lever.
To that end as seen in longitudinal section at Figure 1 of the accompanyings we
employ an equilibrium valvea or valve having two faces a a² against which the
water acts in opposite directions, the major part of the valve being fitted in a guide-
way and having one of its ends a bearing on the usual seat c formed by the
discharge orifice of the supply pipe d whilst the other end a² fits as a piston in the
guideway between the outer end of which and the water supply pipe da branch e
extends. The ball lever is passed through a slot in the mid part of the duplex
valve a and when by the lowering of the water level in the cistern the ball falls the
valve face a is withdrawn from the seat to open the water inlet d whilst the other
face a simply moves in its guideway the pressure of water on one face of the
Print 1

page_text: valve being opposed by the pressure on the other face both in opening and closing.
The valve casing or barrel may be made in two portions each having flanges bolted
or rivetted together as at Figure 1 or it may be made in one piece as at Figure 2
in which case a flange or cap i is preferably screwed or otherwise removably secured
in or on the guideway end of the barrel to afford access for inserting and removing
the valve a. The apparatus may be placed either vertically or horizontally.
In a modified form of the apparatus illustrated in vertical section at Figure 3 of
the drawings two separate valves, are employed these being situated in separate
barrels, m formed on or projecting from the water supply pipe d. These valves are
actuated by the ball lever which is centred at a point exactly between them. The
valve bears on the seat e formed by the water inlet orifice d and is operated in the
usual way when the valve falls but the pressure on it is transmitted through
the lever to the second valve which is fitted as a ram or piston in its separate
barrel m communicating with the supply pipe.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In a supply valve for water closet and other cisterns the combination of a
double faced piston valve actuated by a ball lever a guideway and a branch from
the water supply pipe into said guide behind the end of the valve substantially as
described with reference to Figures 1 and 2 of the drawings annexed.
2. In a supply valve for water closet and other cisterns the combination of two
pistons situated in separate barrels each communicating with the water supply pipe
the pistons being actuated in opposite directions by a ball lever substantially as
described with reference to Figure 3 of the appended drawings.
Dated this Twenty-seventh day of December 1890.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.