Improved Syphon Flush Cistern for Water Closets, Urinals, and the like.
Year: 1894

page_text: Date of Application, 25th June, 1894
'Complete Specification Left, 21st Mar., 1895-Accepted, 27th Apr., 1895
PROVISIONAL SPECIFICATION.
Improved Syphon Flush Cistern for Water Closets, Urinals, and
the like.
WILLIAM GEORGE JENKINSON Registered Plumber, 43 Eyre Street, Sheffield,
and THOMAS CARTWRIGHT Plumber, 16 Carr Road Walkley Sheffield do hereby
declare the nature of this invention to be as follows:-
Into an ordinary rectangular tank or cistern a cylinder is fixed vertically, and
inside said cylinder is placed a loosely fitting piston or plunger motion being
communicated by lever to said piston with which it is connected by pivoted or
movable joints.
Also, inside said cistern a bent pipe is fixed, (similar in shape to an inverted
letter "U" and usually known as a syphon,) one end of which pipe passes through
the bottom of the cistern to closet or other utensil to be flushed; the other end of
the said bent pipe or syphon is fixed near to and outside the bottom of the
aforesaid cylinder, and a short distance from the bottom of the cistern; this end of
the pipe being enlarged conically to resemble a bell.
An outlet is made near the bottom of, and in the said cylinder, and to said
outlet is connected a short pipe, such pipe being turned up and terminating
immediately underneath the bell-shaped opening of the bent pipe before
mentioned.
When the plunger or piston is pressed down by the lever the water is forced
through the outlet in the cylinder and short pipe and up into the bell-shaped
opening of the bent pipe or syphon and so causes a flush to take place, such flush
continuing until the cistern is emptied.
The cistern being fitted with ball-cock or other suitable contrivance, immediately
commences to fill after the flush has taken place.
Dated this 23rd day of June 1894.
WILLIAM GEORGE JENKINSON.
THOMAS CARTWRIGHT.
Improved Syphon Flush Cistern for Water Closets, Urinals, and
the like.
We, WILLIAM GEORGE JENKINSON, 43 Eyre Street, and THOMAS CARTWRIGHT,
46 Carr Road, Sheffield, Plumbers, do hereby declare the nature of this invention
and in what manner the same has to be performed, to be particularly described and
ascertained in and by the following statement :—
Our invention relates to a simple arrangement of mechanism suitable for the
syphon cisterns of water closets, urinals, and other places requiring such flushing
cisterns, and we have illustrated the invention in the annexed sheet of drawings, in
which:
Fig. 1, is an elevation, shown chiefly in section of the apparatus when fixed in a
cistern. Fig. 2, plan of same.
Similar letters of reference indicate similar parts in either of the figures.

page_text: The invention is carried out as follows: Within an ordinary cistern or tank of
rectangular or other form we fix a vertical cylinder A, having a loosely fitting
piston or plunger B, capable of being moved up and down the interior of the
cylinder.
This action is accomplished by means of a pivotted and weighted horizontal
lever (not shown in the drawing) to which the upper end of the piston rod C, is
pinjointed.
The normal position of the piston B, is at the top of the cylinder A. being raise l
to that position by the gravity of the weight upon the lever before mentioned.
At the opposite end of the lever, the chain, cord, or other pull" is attached,
by pulling which the piston B, is forced down to the bottom of the cylinder A,
towards the outlet.
"
The outlet D, opens into a short upwardly curved pipe E, preferably made with
a low and broad opening into the cylinder, and terminating vertically with a round
opening F. Situated directly above this opening F, of the outlet pine E, is the
short leg G, of the syphon G, the lower part terminating in a conical or bell
Shaped mouth piece H, the two parts E, and I, being placed that a free water-
way, is provided between them. The long leg G³, of the syphon G, pisses
through the bottom of the cistern d, and is connected with the flushing pipe of the
water closet or other utensil intended to be flushed.
50
When the piston or plunger B, is forced down the cylinder A, by the action of
pulling down the lever before mentioned, the water contained in the cylinder is
forced through the outlet D, and ejected from the pipe 1, vertically through the
conical mouth piece H, into the short leg GF, causing the syphon to charge and
give the required flush, which continues until the cistern is emptied. The cistern
is refilled by the action of a ball tap, or of other suitable contrivance, this forming
no part of the invention.
It will be seen that as the cistern fills after each flush, water will find its way
through the waterway I, and pipe E, into the cylinder A. also that our invention
dispenses with valves, tight fitting plungers, and the like.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is :-
1. A syphon flushing apparatus constructed and operating as hereinbefore
described and as illustrated in the drawings.
2. In a syphon flushing cistern, the combination and arrangement of the
cylinder A, provided with a loosely fitting piston or plunger B, an upwardly
turned outlet pipe E, a syphon G, the short leg of which terminates in a bell
mouth 1, situated directly over the mouth of the pipe E, but leaving a water way
between the two, substantially as herein before described and with reference to the
drawings.
3. In a syphon flushing cistern, the combination with a cylinder A, of an
upwardly turned outlet pipe situated directly under the expanded mouth of the
short leg syphon, for the purpose specified.
Dated the 19th day of March 1895.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.