Year: 1886

page_text: Date of Application, 21st Oct., 1886.
Complete Left, 20th July, 1887.
Complete Accepted, 23rd Aug., 1887.
RESERV
I, DAVID ANDERSON of Duke Street, Liverpool in the County of Lancaster, Brass
Founder, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in that class of flushing cisterns known as
syphon flushing cisterns. In many of these cisterns as at present constructed leakage
of water is likely to occur and certainty of action is not ensured, and the object of
my invention is to provide a syphon flushing cistern which shall be clear of these
defects.
I form the cistern preferably of cast metal in the usual way and of the required
size say to hold 2 gallons or more of water. In any convenient place, preferably at
one end of the cylinder, I affix the syphon or discharge or fall pipe. This pipe is in
the form of an ordinary syphon with one leg passing down into the cistern and the
other down the outside. The inner end of the pipe fits into a small recess or chamber
formed in or on the bottom of the cistern, preferably cast in a hollow in the bottom.
A cylindrical or conical shaped tube forms this chamber, and over it is placed a cap or
cover somewhat in the manner of the top or cover of a gasometer. In the side of
the chamber is also a small clack or other similar valve opening inwards through
which the water can freely flow into the chamber. A connecting rod or lever
connects the bell lever with the ordinary weighted lever. As the cistern is filled with
water, the water passes through the valve in the side of the chamber (one or more
valves may be used as required) filling it; so that when the cistern is full a portion
of the water is in the chamber. By pressing down the bell cover the water in the
chamber is forced up the syphon pipe, displacing the air therein and charging the
syphon which continues to run, so long as there remains any quantity of water in
the cistern. The valve in the side of the chamber prevents the flow of water in any
but the one direction, when therefore the pressure is brought to bear on the water in
the chamber, it is forced up the syphon pipe, while as soon as the syphon is started
and the pressure in the chamber returned the valve swings open and allows free
passage of all the water in the cistern to the syphon. I prefer to arrange the bell top
of the chamber to be up when the cistern is at rest and the pull lever weighted just

page_text: sufficiently to raise it when the handle is released. It can however be so arranged
that the bell cover be down when at rest and the pull of the lever be made to raise it,
the lever being weighted sufficiently to press it down as soon as the handle is released.
By arranging a trough around the bell top the cistern may be made self acting, the
water rising in the cistern would float it up until it came in contact against the top
or other obstructing piece when the trough would fill, causing it to descend, or this
arrangement might be used for other cisterns, obviating the use of a weight or the
lever, but I prefer the weighted lever.

page_text: Improvements in Flushing Apparatus.
I, DAVID ANDERSON, of Duke Street, Liverpool in the County of Lancaster, Brass
Founder, 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 relates to improvements in that class of apparatus for flushing water
closets, drains and the like known as syphon flushing cisterns. In many of these
cisterns as at present constructed leakage of water is likely to occur and certainty of
action is not ensured, and the object of this invention is to provide a syphon flushing
cistern which shall be clear of these defects.
Referring to the accompanying drawings. Fig. 1 is a side elevation partly in
section of a flushing cistern constructed according to my invention.
Fig. 2. plan of same with lid removed.
A is the cistern formed preferably of cast iron in the usual way and of any
required size say to hold two or more gallons of water. B is a syphon discharge, or
fall pipe shown in the drawings placed at one end of the cistern it is in the form of
an ordinary syphon bent over the edge of the casting A with the short leg passing
down into the cistern and the long leg passing to the outside of it. The bend of the
pipe, B. is preferably wholly outside the cistern or in any event above the overflow
pipe, C. so that no leakage can occur or the cistern cannot discharge itself other
than when required to do so, b is a screw plug with small air hole through it to admit
air into the syphon when the discharge has been effected. It will be found more
convenient to place it where shown or it may be placed in any other suitable
position or a small pipe may be led into the interior of the syphon. D is
a small reservoir or chamber placed on the bottom or floor of the cistern and
connected to or forming part of the inner leg of the syphon B. It may be
placed as shown, above the bottom of a flat bottomed cistern. Or the bottom
of the cistern may be dished out or recessed to receive it if preferred but from
the experiments and trials already made the form shown in the drawings is considered
the best. The reservoir or chamber D may be of any convenient shape or size,
it is fitted at one side with a small clack such as, E. opening inwards through which
water can freely flow into the interior of the chamber, D. F is a bell shaped cap
or cover which fits over the chamber D, the latter should be made cylindrical as
at d for a certain distance where the cover F passes over it; a tight joint is not
required but the chamber and its cover should fit sufficiently closely together so
that when the latter is drawn or forced down quickly more resistance would be
offered to the water to pass between them than to rise in and overflow the syphon
pipe, B. is a small air hole to allow of escape of some air so that the water may
rise to the same height inside the cover, F as outside it as the cistern fills. G' is
a connecting rod attached to the top of the cover, F connecting it with the weighted
lever G. The lever G may be of ordinary construction and fitted with buffers g of
cork, indiarubber or other material to prevent a noise when it strikes the metal of
the cistern and render the cistern noiseless in operation. H is the pull chain attached
to the arm of lever G. I the ball, J the inlet tap, and K the lid.

page_text: As the cistern A fills, the water flows through the clack E (a second or third
clack such as E may be employed if found necessary, as it rises in the cistern A until
it is above the top of the chamber D and to the required height in the cistern the
small air vent, allowing the water to rise to the same height inside as outside of
the cap or cover F. The water also stands to an equal height in the syphon pipe B.
The water may reach the top of the cap F or cover it if desired and it must be of a
capacity to contain more than sufficient water to charge the syphon.
To discharge the cistern the cover F is pressed down over the chamber D and the
water in it forced up the pipe B, displacing the air therein and charging the syphon
which then continues to run so long as there remains any quantity of water in the
cistern. As the clack, E in the side of the chamber D only opens inwards it prevents
the flow of water in any but the one direction, when therefore the pressure is
brought to bear on the water in the chamber by the downward action of the cover, F
it is forced up the syphon pipe B, while as soon as the syphon is started and the
pressure in the chamber D relieved the clack E swings open and allows free passage of
the water in the cistern to the syphon.
I prefer to arrange the top or cover of the chamber to be up when the cistern is
at rest and the pull lever weighted just sufficiently to raise it when the handle is
released. It can however be so arranged that the bell cover be down when at rest
and the pull of the lever be made to raise it, the lever or the cover itself being
weighted sufficiently to press it down as soon as the handle is released. By
arranging a trough around the bell cover the cistern may be made selfacting the
water rising in the cistern would float the cover up until it came in contact with
the lid or other obstructing piece when the trough would fill, causing it to descend
or an arrangement of a trough might be used with other cisterns, to raise the cover
and thus obviate the use of a weight on the lever but I prefer the weighted lever.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I wish it to be understood that I
do not claim broadly the use of a syphon for discharging flushing cisterns but that
what I claim is.
1. A flushing apparatus with syphon discharge pipe having connected with and
opening into the inner leg of the pipe-a reservoir or chamber fitted with a clack
opening freely inwards and at the top with a bell shaped cover, by drawing or
forcing down which the water inside is compressed or driven up the syphon pipe
displacing the air and charging the syphon substantially as described.
2. A syphon flushing cistern having the discharge pipe capable of being placed
with its bend above the edge of the cistern and charged by means of a chamber
attached to the inner leg into which the water passes through an inlet clack and is
forced out to charge the syphon by a movable bell shaped cap or cover substantially
as described.
3. In a syphon flushing cistern the combination with the discharge pipe of a
chamber or reservoir through which the water passes fitted at the bottom with
a clack opening inwards and the movable cap or cover for raising or forcing the
water up the discharge pipe substantially as shown and described.
4. An apparatus for flushing water closets, drains or the like constructed or 4
arranged substantially as herein described.
1.