Year: 1886

page_text: I, OSCAR ELPHICK of Doulton's Sanitary Engineering Works Lambeth in the
County of Surrey Engineer do hereby declare the nature of this invention to be as
follows:-
My improvements relate to that class of apparatus in which the discharge of
water from flushing cisterns is effected by means of a syphon put into action by
the discharge into it of water from a cylinder contained within the cistern.
The syphon I employ is formed by carrying the discharge pipe up within the
cistern to a level above the top of the tank or slightly above the water level and
by surrounding this upward prolongation of the discharge pipe with another pipe
of larger diameter which is closed at the top but has openings into it at the bottom
of the cistern for the passage of water.
In order to be able to set this syphon into action whenever required I according
to my invention lead a pipe from the closed top of the outer syphon pipe to the
bottom of a cylinder contained within the cistern. The cylinder is fitted with a
piston which is coupled to a lever in connection with the pull up mechanisin of
the closet to be flushed. Normally the piston is held up by the lever to the top of
the cylinder and as the cistern fills with water the cylinder can also fill through
openings in its sides just below the piston.
When the piston is forced downwards by the action of the pull mechanism it
passes beyond these openings and then forces water from the cylinder through the
pipe which passes from the lower end of the cylinder to the closed top of the outer
syphon pipe. In this way the water from the cylinder is discharged in a vertical
downward direction directly into the open mouth of the inner syphon pipe thereby
starting the syphon into action and causing the remainder of the water in the
cistern to be sucked up between the inner and outer syphon tubes and discharged
through the inner one which forms the descending limb of the syphon.
By constructing the apparatus in the above way the pipe through which water
is discharged into the syphon to put it into action may be of the same area in cross
section as the inner syphon pipe.
Dated this 5th don of January 1886
CARPMAEL & Co.,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Discharging Water from
Flushing Cisterns.
I OSCAR ELPHICK of Doulton's Sanitary Engineering Works Lambeth in the
County of Surrey Engineer 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 improvements relate to that class of apparatus in which the discharge of
water from flushing cisterns is effected by means of a syphon put into action by
the discharge into it of water from a cylinder contained within the cistern.
The syphon I employ is formed by carrying the discharge pipe up within the
cistern to a level above the top of the tank or slightly above the water level and
by surrounding this upward prolongation of the discharge pipe with another pipe
of larger diameter which is closed at the top but has openings into it at the bottom
of the cistern for the passage of water.
In order to be able to set this syphon into action whenever required I according
to my invention lead a pipe from the closed top of the outer syphon pipe to the
bottom of a cylinder contained within the cistern. The cylinder is fitted with a
piston which is coupled to a lever in connection with the pull up mechanism of
the closet to be flushed. Normally the piston is held up by the lever to the top of
the cylinder and as the cistern fills with water the cylinder can also fill through
openings in its sides just below the piston.
When the piston is forced downwards by the action of the pull mechanism it
passes beyond these openings and then forces water from the cylinder through the
pipe which passes from the lower end of the cylinder to the closed top of the outer
syphon pipe. In this way the water from the cylinder is discharged in a vertical
downward direction directly into the open mouth of the inner syphon pipe thereby
starting the syphon into action and causing the remainder of the water in the
cistern to be sucked up between the inuer and outer syphon tubes and discharged
through the inner one which forms the descending limb of the syphon. The
arrangement of the cylinder might be reversed and the piston be caused to discharge
water from the cylinder on its ascent instead of on its descent.
By constructing the apparatus in the above way the pipe through which water
is discharged into the syphon to put it into action may be of the same area in
cross section as the inner syphon pipe.
The drawing hereunto annexed shews apparatus arranged as above described.
Figure 1 shows a vertical section of apparatus in which the syphon is started
into action by the descent of the piston and Figure 2 a vertical section of similar
apparatus in which it is started into action by the ascent of the piston.
D a
A is the cistern. B the discharge pipe which as shown is carried up above the
top of the cistern. C a pipe of larger diameter surrounding the pipe B except at
the bottom where a passage is left for water to rise up between them.
passage led downwards from the top of the pipe C into the top or bottom of the
cylinder E

page_text: It will be seen that any water discharged from the cylinder through the
passage D will be directed vertically downwards into the open mouth of the pipe B
and act very efficiently to start the syphon into action.
In Figure 1 the piston F of the cylinder is coupled by a link to one arm of a
lever the other arm of which is drawn downwards by a weight G. The piston is
consequently held normally at the top of the cylinder and water can then flow into
the cylinder through holes in the side of the cylinder just below the piston. The
pull mechanism of the closet is connected to the lever at H. In Figure 2 the
passage D is carried down to a cover which closes over the top of the cylinder.
The piston rod passes up through the cover and is connected by a link with the
weighted arm of a lever which normally keeps the piston at the bottom of the
cylinder and the cylinder fills with water through holes which are then just above
the piston.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. The combination of the discharge pipe B rising up above the water level in
the cistern the pipe C by which it is surrounded and the passage D leading from
the top of this pipe to one or other end of a cylinder E from which by a piston
water can be discharged through the passage and vertically downwards into the
pipe B whenever the syphon is to be brought into action.
2. The combination of apparatus for discharging water from flushing cisterns
substantially as herein described and illustrated in the drawing annexed.
Detal thin 5th do of Anbahnu 1000