Improvements in or relating to Syphon Cisterns for Flushing Purposes.
Year: 1889

page_text: Date of Application, 23rd Oct., 1889
Complete Specification Left, 23rd July, 1890-Accepted, 23rd Aug., 1890
PROVISIONAL SPECIFICATION.
Improvements in or relating to Syphon Cisterns for Flushing
Purposes.
I, WILLIAM DUNDAS SCOTT-MONCRIEFF Engineer of 86 Newman Street Oxford
Street London, W. do hereby declare the nature of this invention to be as
follows:-
-
This invention has reference to certain improvements in or relating to syphon
cisterns for flushing purposes, the especial object of the invention being to provide
an improved arrangement of syphon which will permit of the apparatus being both
simplified and cheapened in construction. To this end the invention consists
essentially in the construction of the syphon which is of the description known as
the bent syphon both extremities of which are connected to an enclosed elongated
vessel in such a manner that the inlet leg of the syphon passes completely through it,
the other or outlet leg passing through the top of the vessel only and depending from
it to within such a distance from the bottom of the vessel as will admit of free passage
of water thro' it. By preference I arrange the inlet and outlet legs in such a way
that there is room for the discharge pipe of the tank to pass between them through
the bottom of the elongated vessel already referred to and this pipe projects upwards
into the vessel to a similar distance from the top that the outlet leg of the syphon is
from the bottom so that there must necessarily remain a body of water in the vessel
aforesaid after this syphon has been discharged because it cannot escape below the
level of the upper edge of the discharge pipe projecting into the vessel as already
described. In carrying the invention into effect according to a modification
possessing considerable advantages as regards simplicity and convenience of construc-
tion I arrange the outlet pipe of the cistern so as to connect the syphon arrangement
aforesaid by means of a ground socket similar to the arrangement of a removable
standing waste as ordinarily used in domestic cisterns, and in this way I an enabled
to lift off the whole of the syphon arrangement as already described so as to give
ready access to the interior of the discharge pipe of the cistern, the syphon apparatus
being replaced by simply reconnecting the male and female portion of the ground
socket joint. According to another modification I either make the portion of the
discharge pipe which projects into the elongated vessel removable by having it
screwed into a brass collar or I provide a separate screwed cap on the side of the
vessel so as to give access to it for the purpose of cleansing.
COMPLETE SPECIFICATION.
Improvements in or relating to Syphon Cisterns for Flushing
Purposes.
I, WILLIAM DUNDAS SCOTT-MONCRIEFF of 86 Newman Street in the County of
Middlesex, 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 :-
This invention has reference to certain improvements in or relating to syphon
cisterns for flushing purposes, the especial object of the invention being to provide
an improved arrangement of syphon which will permit of the apparatus being both
simplified and cheapened in production.
The improved syphon is illustrated in the accompanying drawings in sectional
elevation.
1, (Fig. 1) represents the syphon, which is fitted watertight in and through the

page_text: top and bottom of the oblong box or vessell 2, the shorter leg 3, projecting into it and
the longer leg 4 passing through it as shewn. The outlet pipe 5 is arranged so as to
project into the box higher than the level of the short leg 3, so that the water in the
box after being once charged always remains at the level of the upper end of the
outlet pipe 5, thus forming a permanent seal or trap. The jamb nut and union 6
provides an easy means of fixing the apparatus just described inside a cistern which
may be made of any required material and dimensions and which will be discharged
when the water rises over the improved syphon in the same way as in the case of
other flushing tanks.
By a simple modification shewn in Fig. 2, I arrange the outlet pipe 5, so that it
fits in a socket 7 and enables the improved syphon to be easily removed and replaced
as required.
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:
The arrangement and combination of the parts hereinbefore described and the
application thereof for the purpose stated.