Year: 1887

page_text: Date of Application, 18th May, 1887
Complete Left, 17th Feb., 1888
Complete Accepted, 23rd Mar., 1888
1, EMMANUEL PUTZEY care of Messrs. Bede & Co., of 29 Rue Philippe-le-Bon,
Brussels, in the Kingdom of Belgium, Manufacturer, do hereby declare the nature of
this invention, to be as follows:-
The improvements consist in constructing siphons with a double curvature, which
may be applied to various forms of siphons according to the purposes they are
to serve.
As in all cases the centre-branch of the siphon can never be completely emptied,
while the reservoir is being filled, whether slowly or quickly, a certain amount of air
is enclosed in the rear branch of the siphon.
The level of the liquid rising in the reservoir presses on the said volume of air and
this air tending to expel the fluid contained in the centre branch of the siphon meets
a resistance corresponding to the weight of a column of water equal to twice the
height of immersion.
Every increase of air pressure corresponds to an equal elevation of the fluid in the
other part of the centre branch. Therefore the compressed air is under an excess of
pressure nearly double as large as that adapted to balance the weight of a column of
water equal to the height of immersion.
The level of the water in the reservoir therefore attains a height above the apparatus
equal to that of the immersion of the siphon before any fluid escapes from the reservoir
through the outlet tube.
At the moment that this superior level is attained, two cases may ensue, one, the
delivery of the feeding source is capable of actuating the siphon; then the siphon is
not emptied in the ordinary way, but with a surcharge, or, if it is not capable of
actuating the siphon, this can be effected either by a float, which increases the opening
of the feeding cock, or by a float that opens a valve or cock placed at the top of the
compressed-air-receptacle, or by any other suitable means.

page_text: The air-outlet-tube opening towards the atmospheric air, the compressed air rapidly
escapes and the water tending to reattain its level, the siphon is worked.
The float may be placed at any suitable height above the apparatus in such a manner
as to allow the escape of air and consequently the working of the siphon to be
regulated under any suitable surcharge.
By means of these arrangements, direct discharges can be produced without loss of
useful power and without useless waste of water for operating or working.
HERBERT & Co.,
67, Strand, Agents.

page_text: I EMMANUEL PUTZEY in care of Messieurs Bede & Co. 37 Rue Phillippe le Bon
Brussels in the Kingdom of Belgium 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:-
The improvements consist principally in constructing siphons with a double
curvature and so that the same may discharge automatically with a variable
discharge.
Referring to the accompanying drawings Fig. 1 to 6 represent different con-
structions realizing my invention and fig. 7 and 8 are detailed illustrations
respectively in vertical section and in elevation of a double branch siphon as
indicated in fig. 4 and 1 serving as a trap and discharge to a pipe A.
This siphon comprises two branches, B and C connected together at S. By
reason of the mode of action of such siphon the branches at or near the point Š
always contain a certain amount of liquid. During the filling of the vessel, in
which this siphon is situated the air imprisoned in the branch B is gradually
compressed according to the height of the incoming liquid, this pressure on the
air in B causes it to force upward the liquid in the branch S meeting with an
equivalent pressure by the weight of said liquid so that it experiences a resistance
or pressure equal to twice the height of immersion.
Thus each augmentation of pressure of the air corresponds to an increase in the diffor-
ence in level of the imprisoned liquid in the two branches, it is therefore necessary that the
air has an excess of pressure equal to that necessary to counterbalance the weight of
a column of liquid equal to the total height of immersion before it can drive away
the obstacle formed by such column of liquid.
The reservoir, gradually filling, the level of liquid thus will attain a height
above the apparatus equal to the depth of the immersion of the siphon before any
of the liquid in the receptacle will pass into the pipe A.
When this height is attained the siphon will be set in action either by surcharge
by further delivery from the source filling the reservoir, or if this is not available by
a float opening a feed cock or by a float opening a valve and releasing the air com-
pressed in the siphon or by any other means adapted at this moment to induce a
flow of liquid in the siphon.
Thus in Fig. 7 is shown a small U tube a b c extending down the siphon and
forming a small interior siphon adapted to arrive in action slightly before the main
siphon its inner end c on delivery into the pipe A being lower than that of the main
siphon. By this means after the liquid in the reservoir has reached the level
desired any addition however small causes a few drops of liquid to pass the minor
siphon and the main siphon to be set in action.
One of the objects of the invention is to cause the liquid to pass to the outlet
without special form of pipes as is necessary with certain apparatus of this nature, a

page_text: simple pipe of stoneware or cast iron being sufficient. The cost of installation is
also cheapened.
To render the siphon capable of emptying the reservoir when the latter shall have
been filled to a desired level, an angularly bent pipe o is inserted revolvably by one
end in the first branch of the siphon B. By turning this pipe o so that the outer
orifice is brought to a desired distance from the bottom of the reservoir, the liquid
entering the reservoir expels the air from the first branch of the siphon until the
level of the liquid reaches the said orifice and the latter is closed by the liquid, when
the remaining air is imprisoned on the siphon and operates as before described.
Fig. 2 is an elevation of the siphon.
It will be understood that the invention is applicable to all forms of siphons.
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. A siphon having a double curvature or passages equivalent to a double curvature
substantially as set forth.
2. The combination with a main siphon having a double curvature or passages
equivalent to a double curvature, of an U tube a b c adapted to come in action before
the main siphon substantially as set forth.
3. The combination with a siphon having a double curvature or equivalent passages
of a pipe O or equivalent means, whereby the effective length of the first branch of
the siphon may be adjusted in the manner set forth.
Dated this 17th deve of Wah 1000
Dated this 17th dow of Fahr
day
ebruary
1000
100072
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agents to Applicant.