Improvements in Syphon Flushing Cisterns, and in the Apparatus for Actuating same.
Year: 1893

page_text: Date of Application, 26th Oct., 1893
Complete Specification Left, 25th July, 1894-Accepted, 13th Oct.,
1894
PROVISIONAL SPECIFICATION.
Improvements in Syphon Flushing Cisterns, and in the Apparatus
for Actuating same.
I, DAVID THOMPSON, Plumber Gas Fitter &c. No. 83 Church Street Barrow in
Furness in the County of Lancaster do hereby declare the nature of this invention
to be as follows:
To an ordinary flushing cistern I fix a specially constructed union for the outlet
flush pipe, this union on the inside of the cistern forms the seat for the flush valve.
The flush valve consists of a syphon having a flange on the end of its longest limb
which flange may be ground to fit the seat or the water tight connection may be
secured by the addition of a rubber ring or washer of leather or other suitable
material.
The flush valve is kept in its position upon its seat by means of steadying pins or
other suitable device which will allow of the valve being rocked or tilted upon its
seat in such a manner that when it resumes its ordinary position at rest the outlet
in the cistern bottom is closed, the steadying pins guiding the valve back to its seat
& preventing its accidental displacement.
The cistern may be filled by a ball valve arrangement in the ordinary way &
when the outlet is closed the syphon stands in a vertical position within the cistern.
When it is required to discharge the contents of the cistern it is only necessary to
tilt the syphon, this opens the outlet & allows of the charging of the flush pipe,
when the syphon is liberated it at once resumes its vertical position, closes the
outlet & discharges the remaining water through the syphon.
The syphon may be tilted by a lever actuated by a chain or pull, but in my
invention for actuating the syphon I adopt a pneumatic arrangement similar to
pneumatic bell pushes but instead of the india rubber bags I prefer to use small
cylinders & pistons.
The novelty in my invention consists: 1st in the rocking or tilting syphon &
valve and 2nd in the combination of a rocking or tilting syphon & valve, with a
pneumatic arrangement for actuating same.
Dated this 26th day of October 1893
DAVID THOMPSON.
Improvements in Syphon Flushing Cisterns, and in the Apparatus
for Actuating same.
I DAVID THOMPSON of No. 83 Church Street in the County Borough of
Barrow in Furness in the County of Lancaster Plumber and Glazier 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 form of flushing cistern.
The improvement consists of a syphon and flushing valve of special construct
to be herinafter described and in the apparatus for actuating same.
The cistern itself may be of any of the forms & sizes in common use having a
valve seat and union arrangement for attaching the flushing pipe to. A valve is
fitted to the valve seat having a leather, india rubber, or other suitable material
ID 11

page_text: fitted thereto. So as to make a water tight connection from the top of this a
syphon pipe is fixed. The said syphon to be of the same diameter as the flushing
pipe.
This syphon_stands upright within the cistern the upper part being above the
water level. The cistern is filled & the water level maintained by the use of a
ball cock in the usual manner.
The valve forms a flange around the syphon pipe and is kept in position upon its
seat by means of steadying pins or other approved means to allow it to be tilted
upon its seat so as to admit of the water being discharged into the flushing pipe
when required the steadying pins guiding the valve back to its seat & preventing
its displacement. I find in practice that the simplest & most effective way of
doing this is by fitting the valve (having the syphon attached) by means of a
leather or other simple form of hinge to the valve seat; when the valve is opened
by the tilting of the syphon it at once resumes its proper position and closed by
water pressure when the syphon is liberated.
The tilting of the syphon is accomplished in various ways either mechanically
by means of levers as shewn on drawings or by a pneumatic arrangement consisting
of a small cylinder & piston attached to the edge of the cistern and a press button
or other form of air push fixed where convenient of access the two being connected
by a pipe in such a manner that when the press button or air bag is pressed the
compressed air forces out the piston from the cylinder on the cistern & tilts the
syphon, the piston & air push resume their old positions on being releived of
pressure by means of springs.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 Sheet 1 shews the arrangement of syphon valve & seat with the mechanical
arrangements for tilting same.
Fig. 2 Sheet 1 shews a similar arrangement but in this case the syphon is tilted
by the pneumatic arrangement previously described a being air push or press
button 6 the air cylinder and piston and d the air pipe connecting the two.
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
1st. The use of a flushing valve having a syphon pipe attached which is
actuated by tilting upon its seat, admitting water to the flush pipe, and starting the
syphon.
2nd. The combination of a valve & seat with syphon as described in Claim 1
and a pneumatic arrangement for tilting same.
Dated this 24th day of July 1894.
DAVID THOMPSON.