Improvements in or relating to Syphon Flushing Cisterns or Water-waste Preventers.
Year: 1896

page_text: Date of Application, 20th Mar., 1896-Accepted, 25th Apr., 1896
COMPLETE SPECIFICATION.
Improvements in or relating to Syphon Flushing Cisterns or
Water-waste Preventers.
We JOHN JONES of 40 Sydney Street, Chelsea, in the City of London,
Sanitary Specialist and HERBERT EDWARD BRICE of Alexandria Road,
Edgbaston in the City of Birmingham, Brassfounder 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 syphon flushing cisterns or water waste preventers and
will be best understood by reference to the accompanying drawings in which
Figures 1 and 2 are respectively a vertical and a horizontal section of one form
of the apparatus constructed according to our invention and
Figures 3 and 4 are views respectively similar to Figs. 1 and 2 of a second form
of the apparatus.
The lines 2-2 of Fig. 1 and 4 -4 of Fig, 3 indicate where the sections shown in
Figs. 2 and 4 are respectively taken.
Like letters indicate like parts throughout the drawings.
In the apparatus constructed as shown in Figs. 1 and 2 we provide a cistern A
having a well A' at its bottom and to the bottom of this well is connected a stand-
pipe B forming a continuation of the discharge pipe B' leading to the w.c. or other
apparatus to be flushed. On the stand-pipe B is rigidly mounted a casing C which,
as regards its function, may be regarded as a pump barrel, for which reason it is
hereinafter referred to as a "barrel." The bottom C¹ of the barrel C is provided
with openings C2 through which the water has free access to the interior of the
barrel and consequently to the stand-pipe B. In plan the barrel C is preferably
of a suitable non-circular form for example as shown it may be of oblong form; or
it may be of D-form; it may however be circular, provided it is eccentric to the
stand-pipe or has a feather or other device for preventing rotation of the syphon D
within it.
The syphon D has three passages or channels, viz. ;-a middle one D' in the
form of a tube fitting loosely upon the stand-pipe B and two outer ones D2, all of
these tubes or channels connecting together at the upper part of the syphon as
-shown in Figs. 1 and 3.
D 3 which, as it
The piston D3
Around the lower edge of the syphon D we provide a flange
fulfils the function of a piston is hereinafter referred to as such.
is substantially of the shape of and fits loosely into the barrel C.
The passages D2 are in line with the openings C 2.
In the construction shown in Figs. 3 and 4 we dispense with the barrel C and
arrange the well A' to fulfil the function thereof, the piston D 3 fitting loosely into
this well A' as it does in the barrel C of the previously described example. The
piston D 3 shown in Fig. 3 is provided at its edge with a downwardly-extending
lip D4 which tends to force the water inwards towards the passages D 2 during
a rib or
the descent of the syphon. At the top of the syphon is provided
projection D5 which tends to direct the water into the stand-pipe B. In this
example the central tube D' of the syphon D extends to a lower level than the
tubes or passages D 2 and piston D 3 thereof so that it may rest on the bottom of
the well A' or on an equivalent support and thereby retain the syphon D at a
suitable height to maintain a free water way beneath the piston and through the

page_text: syphon. In respects other than those previously mentioned the apparatus shown
in Figs. 3 and 4 is generally similar to that shown in Figs. 1 and 2.
The water is normally at the level indicated by the line E in Figs. 1 and 3.
Each of the syphons D previously described is connected to suitable operating
mechanism such as a lever and chain whereby it may be raised or lowered the
apparatus working as well whether the normal position of the syphon be at the
lower or upper end of its stroke. Assuming the normal position to be at the lower
end of its stroke the operation may be described as follows;-
The syphon D is raised by the chain or equivalent to the upper end of its stroke
and is then released and when it descends, the piston D 3 displaces the water and
forces it up through the passages D 2 and thence out through the stand-pipe B and
flushing pipe B. The water passing through the pipes B B', which together
.constitute the longer leg of the syphon, whose shorter leg is constituted by the
passages D2, causes a partial vacuum to be formed in the upper part of the
syphon D which upper part thereby becomes filled with water the column of water
being thereby completed. At this juncture the syphonic action takes place and
continues until the level of water in the cistern A descends so far as to allow air to
pass beneath the piston D 3 when the column of water is broken and the syphonic
action immediately ceases. The cistern is then filled by means of the ordinary
ball-cock (not shown in, the drawings) after which the discharge of the water may
be again effected as previously described.
If the normal position of the syphon D be at the upper end of its stroke the
syphonic action will take place as soon as the syphon is moved down from that
position.
Any suitable means such for example as a weight may be provided for returning
the syphon to its normal position.
Although the before described flushing cisterns may at the top be either left
entirely open as shown in the drawings or closed by any of the usual lids or covers,
we prefer to close them by covers which in contradistinction to those of ordinary
construction do not provide a surface adapted to accumulate dust. For this
purpose we make each cover incline in one direction only, its highest part being
adjacent to the wall against which the cistern is fixed so that any dust falling
thereon will roll off it away from the wall. We may also obtain the same result
by making the upper edge of the cistern on an incline and using a flat cover
inclined correspondingly. To secure the lid to the cistern we preferably provide
these two parts, with lugs and, apertures adapted to engage with each other
and with other perforated lugs through which the hasp of a padlock may, be
passed..
The before described, apparatus may be modified' without departing from the
spirit of the invention.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what. we
claim is ;-
1. In a water waste preventer the combination with a. movable syphon of a
barrel such as C or well such as A' wholly or partly below the bottom of the
cistern and a piston on the syphon substantially as described and illustrated in the
accompanying drawings.
2. In a water waste preventer having a movable syphon, the combination with
the discharge orifice of an internal projection such as D5 above it substantially
as and for the purpose described and illustrated in the accompanying drawings.
3. In a water waste preventer a syphon having the centre tube or barrel Di
projecting beyond the side walls or other tubes for the purpose of holding up the
syphon so as to maintain a free water-way when in operation.
4. In a water waste preventer the combination with,a movable syphon of a flange
or piston such as D3 D4 thereon substantially as described and illustrated in
Figure 3 of the accompanying drawings.

page_text: 5. A water waste preventer constructed substantially as described and illustrated
in Figures 1 & 2 or 3 and 4 of the accompanying drawings.
6. The combination with a flushing cistern of a cover whose upper surface is
inclined in only one direction substantially as described.
7. The combination with a flushing cistern of a cover whose upper surface is
inclined in only one direction and of lugs apertures and a padlock for securing the
cover to the cistern substantially as described.
Dated this 19th day of March 1896.
HERBERT EDWARD BRICE.
JOHN JONES.
Boult & Wade,
Agents for the Applicants.
HERBERT EDWARD BRICE.
JOHN JONES.
Boult & Wade,
Agents for the Applicants.