Improvements in Water-waste Preventers.
Year: 1891

page_text: Date of Application, 31st Jan., 1891
Complete Specification Left. 24th Oct. 1891-Accepted. 28th Nov. 1891
PROVISIONAL SPECIFICATION.
Improvements in Water-waste Preventers.
I, JOHN EDWARD GRAY of 295, Lavender Hill, Clapham Junction, Builder,
do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved water-waste preventer for water-closet and
other services, and it consists in the combination, with the discharge valve and
suction chamber, (for effecting the opening of the valve and permitting its
automatic closure independently of the pull handle) of a syphon for continuing
the flow of water after the closing of the valve, the syphon being started by the
opening of the discharge valve and ceasing to flow by the emptying of the waste-
preventer cistern.
According to one arrangement, the opening of the discharge valve to flush the
closet does not take place until the release of the pull handle, the suction chamber
being merely put in position to raise the valve when the handle is pulled and the
opening of the valve being dependent on the action of a counterweight, the action
being comparatively noiseless by the counterweight being cushioned upon the water
in the cistern.
According to another arrangement, the operation is the reverse of that above
referred to.
The apparatus comprises the usual cistern and ball valve and a syphon leading
into the discharge pipe at a point below the seat of the discharge valve. The
latter is operated through the medium of a suction chamber, consisting of a
cylinder with a hollow plunger or cylinder working therein connected by a rod with
the counterweighted lever actuated by the pull handle, the connection of the rod
with the hollow plunger being through the medium of an air valve which is opened
when the lever is depressed, to allow of the escape of the contained air and closed
when the lever is raised, to cause the discharge valve to be lifted off its seat by
the suction within the chamber. The discharge valve closes automatically by
leakage of air into the suction chamber on the water in the cistern falling to that
level and upon the closing of the valve the fall of water in the discharge pipe
effects the starting of the syphon which thus continues the discharge of the cistern
after the closing of the discharge valve, until the level falls below the inlet of the
syphon.
Dated this 31st dox of Tenn1001
J. E. GRAY.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Water-waste Preventers.
I, JOHN EDWARD GRAY, of 295, Lavender Hill, Clapham Junction, Builder,
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:-
My invention relates to an improved water-waste preventer for water-closet and
other services; and it consists in the combination, with the delivery valve and
suction chamber (for effecting the opening of the valve and permitting its auto-
matic closure independently of the pull handle) of a syphon for continuing the
delivery of water after the closing of the said valve, the syphon being started by
the opening of the delivery valve and ceasing to flow by the emptying of the
waste-preventer cistern.

page_text: According to one arrangement, the opening of the delivery valve to flush the
closet does not take place until the release of the pull handle, the suction chamber
being merely put in position to raise the valve when the handle is pulled and the
opening of the valve being dependent on the action of a counterweight, the action
being comparatively noiseless, in consequence of the counterweight being cushioned
upon the water in the cistern.
According to another arrangement, the operation is the reverse of that above
referred to, that is to say the suction chamber 'is normally kept in operative
position by the counterweight and the valve is raised by the pull handle but
closes independently thereof, by reason of air leaking in between the cylinder and
plunger, which is a loose fit."
Reference is to be had to the accompanying drawings, forming part of this
Specification, wherein I have represented in Figure 1 a part sectional elevation
and in Figure 2 a plan of the first described arrangement.
Figure 3 is a detail section of discharge valve.
The apparatus comprises the usual cistern A, supply valve controlled by a ball
lever B, and a syphon C leading into the delivery pipe D at a point below the seat e
of the delivery valve E. The latter is operated through the medium of a suction
chamber consisting of a cylinder F closed at bottom to which the valve E is
attached and a hollow plunger G in the form of a cylinder open at bottom and
working in cylinder F, said plunger being connected by a rod g with the lever H
actuated in one direction by the counterweight I and in the other by the pull
handle, the connection of the rod g with the hollow plunger G being through the
medium of an air valve, formed of a head on the lower end of the rod g
closing from within an aperture in the top of the plunger through which the rod g
loosely passes with freedom to slide, limited by a cotter g². The air valve is thus
opened, to allow of the escape of the contained air, when the plunger is depressed
in the cylinder and closed when the plunger is raised to cause the delivery valve
to be lifted off its seat by the effect of the vacuum within the chamber. The
valve closes automatically by leakage of air into the suction chamber on the
water in the cistern falling to the level of the air-valve and upon the closing of
the valve E the fall of water in the delivery pipe D, which virtually forms the
long leg of the siphon, effects the starting of the siphon, which thus continues the
supply of water after the closing of the valve E.
The water delivered through the valve E may be sufficient for the first flushing
of the closet, the syphon supplying the quantity required for the after-flush. In
any case, the delivery ceases altogether when the water level falls so low as to
uncover the inlet mouth of the syphon, which occurs after a certain time, notwith-
standing that water is supplied to the cistern during the action of the siphon,
whose capacity of discharge is very great compared with the rate of inflow at the
ball valve. The bend of the siphon is situated at such a height above the highest
water-level in the cistern that the syphon cannot be restarted by the opening of -
the valve E before the cistern is refilled.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is-
In a water-waste preventer cistern, the combination, with the delivery valve
operated by a suction cylinder, as described, of a siphon connected with the
delivery pipe at a point below the delivery valve, for continuing the supply after
the valve is closed, as specified.
Dated this 27th way of October 1831.
J.
GRAY.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered P. Agents.