Improvements in and connected with Automatic Syphon Flushing Tanks.
Year: 1899

page_text: Date of Application, 11th July, 1899-Accepted, 12th Aug., 1899
COMPLETE SPECIFICATION.
Improvements in and connected with Automatic Syphon Flushing
Tanks.
I, FREDERIC SAWYER WINSER, Sanitary Engineer, of 52, Buckingham Palace
Road, Pimlico, in the County of London, 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 consists of improvements in and connected with automatic
syphon flushing tanks, its object being to ensure the automatic working of the
syphon as soon as the water has risen to a sufficient height, no matter how
slowly it may enter the tank.
It is the practice with many water companies to fit up these tanks in such a
way that the water supply enters drop by drop, the result being that the water
is so slow in rising that as soon as it reaches the vertical outlet of the syphon
it trickles or flows away without effectually starting it.
My present invention meets this objection in a most efficient manner, its action
being so sudden that the syphon cannot fail to act when the tank has become
filled to the required level.
The accompanying drawings illustrate my invention applied in more than
one way, but all working upon the same principle, the views being side eleva-
tions, with the wall of the tank cut away for the sake of clearness. The same
letters of reference indicate similar parts throughout the drawings.
Referring to Figure 1 of said drawings, A is a bell syphon situated within
the tank B. I provide an air release pipe C extending from inside the mouth
of the outlet tube of the syphon preferably below the water level up to a point
above water line or near the roof of the tank. At this end is provided a stop
air valve D, operated by a vessel E attached to the end of the valve arm F,
acting alternately as a float and as a weight, said vessel E being open at the top
and carrying a small syphon G for emptying the vessel of water when required,
or other equivalent means.
Figure 2 shows my invention applied to a tubular syphon, the air pipe C
being inserted into the lower leg of the syphon below water level, as shown.
In Figure 1, I have shown the air pipe C also in dotted lines extending up
within the syphon and through the crown of the bell, which plan may be adopted,
if preferred, in place of that already described.
Similarly, the air pipe C shown in Figure 2 may pass up through the top of
the tubular syphon, instead of in the manner shown, if preferred.
The action of the apparatus is as follows. The air valve D remains open
until the water in the tank A rises to a certain level, the vessel E floating upon
the surface and eventually causing the valve D to become closed. The valve D
remains closed and air-tight, while the water continuing to rise in the tank,
compresses the air in the syphon A. After a time, the water will have reached
the top of the floating vessel E and flowing over into the same will cause it to
sink and open the air valve D again. The sudden release of the compressed air
within the syphon, will now produce a sudden rush of water through the same.
D

page_text: which will go on until the tank is empty or practically so, the vessel E being
left suspended as shown by the dotted lines, and being emptied by the small
syphon G as already mentioned, or by other equivalent means.
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
I claim is:-
1. In automatic syphon flushing tanks, an air valve D communicating by a
pipe with the interior of the syphon discharge tube and working in combination
with a vessel E adapted to, alternately sink and float in the tank, substantially
as and for the purpose described.
2. The hereinbefore described method of starting the syphons of automatic
flushing tanks, consisting of the employment of an air pipe passing from the
interior of the syphon discharge tube to a point within the tank above the water
level, and providing the top of said pipe with an air valve opened by the sinking
of a vessel attached to the valve arm and closed by the raising of the same,
substantially in the manner set forth.
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1
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1000
STANLEY, POPPLEWELL & Co.,
61 and 62, Chancery Lane, London W.C., Agents for the Applicant.