Improvements in Syphon Cisterns for Flushing Water-closets and other similar Purposes.
Year: 1889

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c., Act, 1883), as allowed
by the decision of the Comptroller General of the 15th day of March 1897.
Date of Application, 24th Oct., 1889
Complete Specification Left, 22nd Feb., 1890-Accepted, 29th Mar. 1890
PROVISIONAL SPECIFICATION.
Improvements in Syphon Cisterns for Flushing Water-closets and
other similar Purposes.
I, CHARLES EDWARD PERCY GABRIEL, trading as Gabriel and Company, of
5 A. B. Row, Birmingham, in the county of Warwick, Manufacturing Brassfounders,
do hereby declare the nature of this invention to be as follows:-
This invention relates to an arrangement of apparatus whereby water closets (or
other similar requirements) may be flushed at will, with a certain quantity of
water, and its object is to provide certain improvements in connection with the
syphon pipes; also an improved combination of fixed fittings with the tank; and an
improved general combination of the parts constituting the whole.
It consists of a tank of suitable size and shape, which is fixed in an elevated
position relative to the water closet &c.
In the centre of the bottom of this tank, I provide by casting in one therewith,
a cylindrical well, extending downwards for a convenient distance therefrom. Around
the walls or sides of this well, and at the bottom of the same, I provide an enlarge-
ment or narrow circular recess, of a depth, say about three-fourths of an inch, more
or less, this recess being an important feature in this my invention.
In the centre of the bottom of this well I provide the outlet (or syphon) pipe,
which rises or extends upwards to about the same height as the depth of the said
tank. This pipe is of wrought iron embedded in the casting mould, and the molten
cast iron run around it, thereby fixing it in position. Upon the lower exposed end of
this pipe, provision is made by screw thread &c., for connecting thereto the discharge
pipe.
I now provide a heavy cast iron piston to slide freely in the aforesaid well, and
externally covering the aforesaid syphon pipe. This piston is carried by means of an.
extension which is carried upward to the top of and above the syphon pipe, and there
terminates with a joint pin, slot, or other provision to receive the one end of a
manipulating lever. This lever is fulcrumed from the one end of the tank cover,
and thence extending outwards, to which outer end a chain is attached, having at its
lower hanging end a handle. This snug or joint, to receive the lever at its fulcrum, is
secured by screw pin taking into a tapped hole in the cover.
At the one end of the tank the inlet or supply ball valve is attached, whilst at the
other end, an overflow tap is attached. Also upon the outside of the tank I provide
an enlarged and then contracted slot, formed in an ear cast at each end, by which the
said tank may be hung upon two screws, or projections, upon a wall &c. These
provisions to receive the inlet and the overflow valves, and the lever, are provided at
each end however, so that if desired, the arrangement can be reversed from left to
right or vice versa.

page_text: As arranged thus, its action would be somewhat as follows :--
The tank being empty, the ball would lie at its lowest position, thereby opening
full the inlet valve.
As the tank becomes filled the ball rises and closes the valve and thus cuts off the
supply. The water in the tank has now found its way to a common level in the tank,
and in the annular space between the syphon pipe and the piston extension piece.
Upon pulling down the chain the piston is raised, the water of course taking its place.
Upon letting go the chain, the said piston descends somewhat suddenly by reason of
its weight, to within a short distance, say about three sixteenths of an inch of the
bottom of the well, which distance is determined by projections formed upon the
bottom of the said piston, and in such descent forces the water up the annular space
between the outlet or syphon pipe and the piston, the body of water in the enlarged
diameter materially improving the upward forcing action when the piston descends,
and thereby sets up a syphon action, by which the whole of the contents are
discharged, until air is again admitted into the said space, when the syphon action
ceases, and the vessel is again filled ready for a repeat action.
In some instances I may modify the construction somewhat, by casting the well
upon the inside of the tank, and provide inlet holes near its bottom from the body of
the tank thereinto. Also in such cases I further enlarge the diameter of the upper
part of the piston and provide between it and the syphon pipe, an envelope of cast
iron, which is fixed but having inlet spaces at its bottom and an annular space
between its upper inner end and the syphon pipe, so that the water may flow from the
well thereinto, up, and over into the said syphon pipe.
In this modification I may if desired dispense with the middle envelope pipe, as
the outer well, and the piston with its upper extension will act, nevertheless I prefer
the arrangement as described, as it works much more satisfactory and certain.
Its action however will be very similar to that already described.
Dated this 23rd day of Octalian 1990
CHARLES T. POWELL,
Applicant's Agent.
Improvements in Syphon Cisterns for Flushing Water-closets and
other similar Purposes.
I, CHARLES EDWARD PERCY GABRIEL, trading as Gabriel and Company, of
5 A. B. Row, Birmingham, in the county of Warwick, Manufacturing Brassfounders,
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 an arrangement of apparatus whereby water closets,
(or other similar requirements) may be flushed at will, with a certain quantity of
water, and its object is to provide certain improvements in connection with the
syphon pipes.
I will now describe and explain this my invention with the aid of the accompanying
illustrative sheet of drawings upon which are figures and letters of reference, similar
letters referring throughout the several views to the same thing or part.
I will describe it as particularly illustrated in Figs. 1 to 5, in which :-
Fig. 1, is an end elevation, and Fig. 2 a side sectional elevation of this my
invention. Fig. 3, is a part sectional plan view, with the cover removed, and Figs. 4,
and 5, are detail views of parts.
a. is a tank of suitable size and shape, which is fixed in an elevated position
relative to the water closet &c.

page_text: In the bottom of this tank, I provide by casting in one therewith, a cylindrical
well b, extending downwards for a convenient distance therefrom. Around the walls
or sides of this well, and at the bottom of the same, I provide an enlargement or
narrow circular recess c, of a depth, say about three-fourths of an inch, more or less,
this recess being the important feature in this my invention.
In the centre of the bottom of this well I provide the outlet (or syphon) pipe d,
which rises or extends upwards to about the same height as the depth of the said tank.
Upon the lower exposed end of this pipe, provision is made by screw thread &c., for
connecting thereto the discharge pipe (not shown).
I now provide a heavy piston e, to slide freely in the aforesaid well b, and externally
covering the aforesaid syphon pipe d. This piston is extended upward to the top of,
and above the syphon pipe, and there terminates with a joint pin, and link, to
receive the one end of a manipulating lever g. This lever is fulcrumed from the
one end of the tank cover at h, and thence extends outwards, to which outer end a
chain i, is attached, having at its lower hanging end a handle. This snug or joint
piece, to receive the lever g, at its fulcrum, is secured by a screw bolt passing
through a hole in the cover.
At the one end of the tank the inlet or supply ball valve k, is attached, whilst at
the other end, an overflow tap 1, is attached. Also upon the outside of the tank I
provide an enlarged, and then contracted slot m, formed in an ear n, cast at each end,
by which the said tank may be hung upon two screws or projections upon a
wall &c. These provisions in the tank and its cover, to receive the inlet valve k,
and the overflow tap; and also the lever 9, are provided at each end, so that if
desired, the arrangement can be reversed from left to right or vice versa.
As arranged thus, its action would be somewhat as follows:-
The tank a, being empty, the ball would lie at its lowest position, thereby opening
full the inlet valve k. As the tank becomes filled, the ball rises and closes the valve,
and thus cuts off the supply. The water in the tank has now found its way to a
common level in the tank a, and in the annular space between the syphon pipe d, and
the piston extension piece e. Upon pulling down the chain i, the piston is raised,
the water of course taking its place. Upon letting go the chain, the said piston
descends somewhat suddenly by reason of its weight, to within a short distance, say
about three sixteenths of an inch of the bottom of the well, which distance is
determined by projections o, formed upon the bottom of the said piston, or upon the
well, and in such descent forces the water up the annular space between the outlet or
syphon pipe d, and the piston e, the body of water in the enlarged diameter c,
materially improving the upward forcing action when the piston descends, and
thereby sets up a syphon action, by which the whole of the contents are discharged,
until air is again admitted into the said space, when the syphon action ceases, and
the vessel is again filled ready for a repeat action.
The body of water caused by the enlargement or recess c, forms and acts, as it
were, like a water piston ring, preventing more effectually the passage of air there-
through, until all the water in the tank and well has been discharged.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The enlargement or recess c, in combination with the tank and well of a flushing
cistern, substantially as described, and illustrated in Fig. 2, and for the purpose
specified.
Dated this 21st day of February 1890
CHARLES T. POWELL,
12, Cherry Street, Birmingham, Applicant's Agent.