Improvements in and relating to Siphons for Flushing Water Closets, Urinals, and the like.
Year: 1897

page_text: Improvements in and relating to Siphons for Flushing Water Closets,
Urinals, and the like.
I, WILLIAM Ross, Junior, of 27, Thistle Street, in the County of the City of
Glasgow, Engineer, do hereby declare the nature of my invention to be as
follows:-
This invention has reference to improvements in and relating to siphons for
flushing water closets, urinals, and the like.
As applied in connection with the automatic discharge of the contents of
cisterns, the short leg of siphon would consist of an outer or annular tube with
closed end at top but having a small hole for the liberation of any accumulated
air. An inner tube open at both ends would be secured by radial arms to the
annular tube, and work telescopically over a fixed tube leading to discharge pipe
and so forming the long leg of siphon. A hollow float vessel, preferably of bowl
shape, would be fitted round the outer tube, and a small siphon shaped pipe
would lead from this float vessel down the central tube sufficiently far to form
an auxiliary siphon.
The action is as follows:-When the cistern is filling, it will gradually raise
the float carrying the siphon tubes until the tube with closed end comes against
The water will then rise until it flows over
a stop projection near top of cistern.
top edge or rim of float to fill the latter, which will sink or fall down bringing
with it the siphon tubes, and so the flushing action of the siphon will be started.
The water will then be discharged from the float by the flushing action of the
auxiliary siphon pipe; and these actions will go on automatically discharging
the liquid contents of cistern. A rubber ring would be fitted round fixed tube
for cushioning the telescopic or sliding part of inner siphon tube.
In applying these improvements to household flushing cisterns, or cisterns
which are only periodically worked by hand operation, the float vessel and auxi-
liary siphon pipe from same are dispensed with, and the main siphon tubes are
pulled down below the water level by the action of a hand operated lever, to
start the siphon discharge; while they are automatically raised up again by the
recoil action of a spring, preferably bearing up against a flange below siphon
tubes.
1
14
of November 1897

page_text: Improvements in and relating to Siphons for Flushing Water Closets,
Urinals, and the like.
I, WILLIAM Ross, Junior, of 27, Thistle Street, in the County of the City of
Glasgow, Engineer, do hereby declare the nature of my invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement, that is to say:-
-
This invention has reference to improvements in and relating to siphons for
flushing water closets, urinals, and the like.
And in order that my said invention and the manner of carrying same into
practice may be properly understood, I have hereunto appended an explanatory
drawing representing a sectional elevation of my appliances as fitted within a
cistern.
Referring to said drawing:
As applied in connection with the automatic discharge of the contents of
cistern A the short leg of siphon would consist of an outer or annular tube B
with closed end B₁ at top but having a small hole for the liberation of any
accumulated air. An inner tube C open at both ends would be secured by radial
arms to the annular tube B and work telescopically over a fixed tube D
leading to discharge pipe E and so forming the long leg of siphon. A hollow
float vessel F preferably of bowl shape, would be fitted round the outer tube B-
and a small siphon shaped pipe G would lead from this float vessel F down the
central tube D sufficiently far to form an auxiliary siphon.
2
The action is as follows. When the cistern A is filling, it will gradually raise
the float F carrying the siphon tubes until an extension 132 of the tube B with
closed end B comes against a stop projection A¹ near top of cistern. The water
will then rise until it flows over top edge or rim of float F to fill the latter,
which will sink or fall down bringing with it the siphon tubes, and so the 2
flushing action of the siphon will be started. The water will then be discharged
from the float F by the flushing action of the auxiliary siphon pipe G, and these
actions will go on automatically discharging the liquid contents of cistern.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what 3
I claim is:-
First. The method af automatically flushing water closets, urinals, and the
like, from cisterns by combined siphon actions, substantially as set forth.
Second. In flushing water closets, urinals, and the like, the method of giving
an auxiliary or after flush by means of a siphon from the float vessel, substan- 3
tially as set forth.
Third. The arrangement and combination of siphon and float appliances for
flushing water closets, urinals, and the like, substantially as herein described
in reference to and shown in the accompanying drawings.
Dated the 28th day of July 1898
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.