Improved Automatic Flushing Siphon.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improved Automatic Flushing Siphon.
I, JOHN MERRILL, 30, Albany Road, Sheffield, Engineer, do hereby declare
the nature of this invention to be as follows:-
To make an automatic siphon that will work with certainty with either sewage
or clean water I construct a siphon with two traps. I connect to the air space
between these traps one end of an airpipe the other end of which is connected
either to the siphon or other desirable part of. a small automatic tank.
I so
arrange the supply of sewage & water or of either that when the larger siphon
tank is filled to its proper height the small automatic tank fills & flushes.
The emptying of the small tank sucks air out of the space between the two
traps creating a vacuum which causes the larger siphon to charge & flush.
By another method I connect the airpipe with a waste pipe & use an overflow
of the sewage to cause the sucking action.
Another method I adopt is to use a tipping bucket to charge the waste pipe.
Dated this 29th day of March 1899
I, JOHN MERRILL, 30, Albany Road, Sheffield, 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:―
To make an automatic siphon which will work with certainty either with
sewage or water I construct a siphon A as shewn in the accompanying_drawing
Fig. 1, with two traps B & B¹. To the airspace C between these traps I connect
one end of an airpipe D the other end of which D' is connected to a small
automatic flushing cistern E.
If the large tank G is to be supplied by sewage or waste water this may be
fed directly from the drain G. When the sewage or water has filled the tank G
to its proper flushing level the rise of liquid causes the small automatic cistern E
to fill. This may be accomplished by means of the reversed ballcock H connected
by the pipe I to any water supply, or by other convenient method. The small
cistern E may be any reliable automatic one and the use of it, is by its discharge
to obtain a sucking action through the pipe D, D¹. To do this I connect to the
end of the airpipe D¹ an airchamber F which I place in the cistern E. The
water rising in the cistern E expels the air in the airchamber F by means of the
pipe D, D through the trap B¹. When the cistern E is full it flushes & in
[Price 811

page_text: DA
discharging its contents draws the water out of the airchamber F. This sucks
air out of the air space C and causes a partial vacuum and in consequence the
trap B is no longer able to sustain the head of sewage which now charges the
siphon and empties the tank G' Fig. 2 shews an arrangement intended to
work entirely with sewage. The letters indicating the various parts are the same
as in Fig. 1 but E, H, I are replaced by K, L, M, N. L is a tipping bucket
contained in a chamber K. When the sewage has reached its proper flushing
level it flows through the overflow pipe M into the tipping bucket L which when
full tips and discharges its contents down the pipe N The flow down N causes
the same,
sucking action as is performed by, the emptying of the cistern E in
Fig. 1.
Fig. 3 is an arrangement by which the overflow of sewage flowing down N, sets
up the sucking action; but this method requires an inflow through G₁ sufficient
to fill N full bore whereas Figs. 1 & 2 will work with the merest dribble.
the nature of my said
Having now particularly described and ascertained
invention and in what manner, the same is to be performed, I declare that what
I claim is
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3
1. A siphon A with two traps B, B', an airpipe D, D' connected to an air-
chamber F in an automatic cistern E.
2. A siphon A with two traps B, B, an airpipe. D, D' connected to a chamber K
containing a tipping bucket L an overflow pipe, M and a wastepipe N.
3. A siphon A with two traps B, B' an airpipe D,. connected to an overflow
pipe N, Fig. 3.
200
1000