Improvements in Flushing Cisterns.
Year: 1893

page_text: Date of Application, 13th July, 1893
Complete Specification Left, 13th Apr., 1894-Accepted, 19th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Flushing Cisterns.
I, JOHN PALMER ADLINGTON of Low Street, Sutton in Ashfield, in the
County of Notts, Architect and Surveyor do hereby declare the nature of this
invention to be as follows:-
This invention relates to a new or improved pneumatic syphon flushing cistern
the object being to render such cisterns more certain in their action. A ball-tap is
provided for the inlet of the water to the cistern the inlet pipe being near the
bottom of the cistern. An air trap or bell is provided above the cistern in which
the air will be compressed as the water rises. The flush pipe is trapped at or near
the bottom of the cistern. From or near the top of the air-trap or bell is connected
a pipe which leads to and is connected with a push knob or button and its
accessories.
The push is constructed of brass or iron and has a brass, china, wood or iron
outside case.
Inside the push box and connected to the case is a hinged lid, flap, or valve
provided with a counterpoise at the end, it is also fitted with an india-rubber
washer. The push pin is fitted with a retain spring (a spiral spring surrounding
the pin).
The action of this pneumatic syphon flushing cistern is as follows:
The water being admitted to the cistern will confine the air in the dome or bell.
Upon the push being forced inwards it will allow the confined and compressed air
to escape through the opening of the hinged balanced flap or valve. The pressure
being thus relieved the valve is immediately closed by the counterpoise of the flap
or valve when the water rises in the air dome or bell and starts the syphon.
Dated this 13th day of July 1893.
HUGHES, ELI & HUGHES,
76, Chancery Lane, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Flushing Cisterns.
I, JOHN PALMER ADLINGTON of Low Street, Sutton in Ashfield, in the
County of Notts, Architect 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 Flushing Cisterns and has for object to
provide an improved pneumatic syphon flushing cistern which shall be much more
certain in its action than other syphon flushing cisterns hitherto in use.
In accordance with this invention I have an ordinary cistern which may be of
cast iron, earthenware, or other suitable metal, substance, or material, and which is
supplied with water by an ordinary ball cock or valve. The water inlet pipe from
the ball cock or valve I preferably conduct to near the bottom of the cistern.
The syphon arrangement I form of a metal S trap screwed to the bottom of
cistern and connected to the flushing pipe. Over the open end of said S trap
I have a metal cylinder formed with a dome top and having perforations or

page_text: openings at the bottom. This will form an air trap or bell in which the air will
be compressed as the water rises.
Fron near the top of the air trap or bell aforesaid, say within " of the top, I
have a small pipe leading to, and connected with, a push box situated in any
suitable position for convenient manipulation by the operator. To this push
box, which may be of cast iron or other suitable metal or material, and
preferably of a circular shape, I screw on, or otherwise attach, a flat perforated
lid. This lid may be of brass, iron, or other metal, or of earthenware, and the
perforations therein may be of any desired shape or configuration. The push
or button passes centrally through this lid and is maintained in position by a
perforated domed case. The push or button may be of brass or other metal or
earthenware and has a rubber washer fastened thereto by a nut and screw.
Around the push and within the box I have an ordinary spiral spring which will
effect the return of the push when released from external pressure.
To allow of the escape of the air confined and compressed in the air trap or bell
over the syphon and to cause syphonic action of the flushing apparatus the push or
button is pressed when the air will immediately flow through the small air piping
aforesaid and escape through the perforations of the push box thus allowing the
water to rise in the syphon box and pass through the Strap and flushing pipe.
And in order that this my invention may be fully understood and readily carried
into effect I have illustrated the same in the accompanying sheet of drawings upon
which
Fig. 1. represents in side sectional elevation a pneumatic syphon flushing cistern
constructed in accordance with this invention.
Fig. 2. is a similar sectional view of the push box referred to, and
Fig. 3. is a face view of the inner perforated plate or lid of push box with the
domed casing removed.
In the drawings A represents the cistern, A' the ball of ball cock or valve B.
B is the water inlet pipe conducted to near the bottom of the cistern A. C is the
metal trap screwed at C to the bottom of the cistern and connected with flushing
pipe at D. E is the metal cylinder forming an air trap or bell placed over the
open end C2 of the metal trap C, and having as shewn a dome shaped top, and
openings E' at bottom F is the small air pipe leading from close to the top of
inside of dome to the push box G as aforesaid. His the flat perforated lid or
plate screwed on to the box G. The perforations I in this plate or lid may be of
any design and are preferably arranged around the push K in the manner shewn
particularly in Fig. 3. of the drawings. L is the perforated domed casing
surrounding- push button K. M is a rubber washer fastened to push K and
covering the perforations I in plate H when closed, and N is the return spring
hereinbefore referred to.
It will readily be seen that as the water passes through the supply or inlet
tube B¹ into the cistern A and rises therein, it confines and compresses the air
within the dome or bell E. Upon the push K being pressed inwardly it will allow
thé confined and compressed air to escape by means of the air piping F through
the perforations in the push box covers, and thus the water is allowed to rise in the
syphon box and so start syphonic action.
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.
1. In flushing cisterns the pneumatic syphon apparatus, substantially as
hereinbefore described and illustrated in the accompanying drawings.
2. In syphon flushing cisterns the combination of Strap C, and air bell or
dome E, with the air pipe F, push box G perforated lid or plate H, push button K,
perforated dome casing L, rubber disc or washer M and return spring N all
arranged and operating substantially as and for the purposes herein before described
and shewn.

page_text: 3. The general construction, arrangement, and combination, of parts forming my
improvements in flushing cisterns substantially as hereinbefore set forth and
shewn.
J. P. ADLINGTON.
Hughes, Eli & Hughes,
76, Chancery Lane, London, W.C., Agents for the Applicant.