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Патент USA US2131660

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SePt- 27, 1933-
|_. HEIDMANNY
WATER JET APPARATUS
Filed Sept. 22, 1937
'
-
12,131,660
2,131,660
Patented Sept. 27, 1938
UNITED" STATES PATENT v OFFICE
& Ateliers de Constructions Electriques de Jeu
mont, Societe Anonyme, Paris, France, a French '
joint-stock company
Application September 22, 1937, Serial No. 165,211
In France September 29, 1936
(01. 299-2)
3 Claims.
air equals the atmospheric pressure increased by
The present invention relates to a water-jet
apparatus of which the nozzle is maintained at
the surface of the water by a ?oating body ca
the ‘piezometric pressure at B.
It is applicable in particular, for providing
during the night, luminous fountains at the sur
face of a river which during the day must be
rendered free for the needs of navigation. In
10 this case, the ?oating body may. support the
source of light and all necessary equipment and
'
~ ‘
Y.
as pressure is ‘re-established in thewater pipe 4.
At this moment, in fact,‘ the ejector 8 returns .1
into operation and graduallyl'empties the'vessel
l of its water, in spite, of the small in?ow of'
water which takes‘ place" through the tube 2.
When the level comes below A, the ?otation
is ensured and the whole rises up to thesurface. it
The ejector continues'its operation, and‘. com
pable of sinking automatically to the bottom
5 when its utilization is terminated.
mechanism, in addition to the nozzle.
,
" Immersion is produced automatically as soon
pletely' empties .thelvessel' While the air pene- .
’ '
trates through the tube 2.‘
In the following description, reference is made
to the accompanying drawing which represents
15 three examples of carrying out the invention.
Ballast or other known. means’ can be provided
to ensure the stability’of the whole, both when 15
submerged and when on the surface.
Figs. 1, 2 and 3 show the three forms of foun
tain structure ?oating awash at the surface of
the water.
Fig. 2a shows the fountain structure of Fig. 2
in the submerged condition.
A normally open cock ‘I placed upon the air
tube 2 allows, when it is closed, of maintaining
the vessel a?oat in spite of the stoppage of the
water-jet.
The improved apparatus shown in Fig. 1 com- '
_
.
20
It is permissible, without departing from the
prises a ?oating body constituted by a vessel 1 . scope of the invention, to provide modi?cations
behaving in practice in the same manner as the
carrying at the upper part a tube 2 for the pas
example of construction described above; in par
sage of air. The vessel l supports a jet-nozzle 3
25
ticular, it is possible:
'
connected to the source of water under pressure
~ (a) In order to accelerate the emptying of the .
by a movable piping ll, ?exible or jointed. Upon
vessel, which produces'the immersion, to arrange
the nozzle 3 (or upon the piping 4) there is pro
vided at 5 a tube feeding an ejector 6, the suc
tion of which is ‘connected to the lower part of
the vessel I.
-
in parallel with the ejector a second ejector of
'
The operation of the improved nozzle-carrying
apparatus is the following:
I
When the whole is ?oating normally and the
_ Water-jet is in action, the water pipe 4 being
under pressure feeds the ejector 6, which action
maintains the vessel I empty of water, the air
therein being maintained at the atmospheric
pressure by the action of the tube 2. Flotation
thus ensured.
Immersion is produced automatically when the
jet of water is stopped, from whichmoment on
wards the water pipe 4 is no longer under pres
sure.
The ejector 6 ceases to operate and water
penetrates into the vessel 1 by the ori?ce of the
said ejector, while air escapes by the tube 2.
_
When the level of water reaches the base of
the tube 2, namely at A, the air ceases to escape.
Now, the length of the tube 2 has been deter
5
mined in such a way that the ?otation ceases to
be ensured from that moment onwards. In these
conditions, the whole sinks to the bottom while
the level continues to rise in the vessel and the
air becomes compressed. The level becomes ?xed
at B, such that the pressure of- the compressed
55
greater power which is only brought into action
forthe raising operation. As shown in Fig. 2, 30
the vessel I, provided with the air‘ tube 2, nozzle 3',
water pipe 4, tube 5, and ejector 6, as described
with reference to Fig. 1, is also provided with a
second or supplementary ejector 8 of greater
power than the ?rst ejector 6. This second ejec 35
tor 'is'fed by the intermediary of a cock 9 which '
is controlled-by a ?oat l0 carried by the vessel; I.
this cock is shown diagrammatically as a three
way cock, which directs the water coming from
the water pipe 4 either towards the supplemen 4.0
tary ejector B, or towards the jet-nozzle 3, ac
cording as the vessel is submerged orawash.
Fig. 2 shows the vessel at the surface, the ?oat
It maintaining the cock 9 in position for feed- I
ing water to the jet-nozzle 3 and to the ejector 45
6; Fig. 2a shows the vesselsubmerged after stop
page of the water supply, the ?oat l0 therefore
acting to turn the cock 9 into position for feeding
the supplementary ejector 8, so thatv as soon as '
the water supply pressure ism-established in 50
the water pipe 4, the ejector 8 will operate to
empty the vessel I of its enclosed water, the '
immersion therefore taking place more rapidly
than with the single small ejector 6 provided in
55
the construction shown in Fig.‘ 1.
2
2,131,660
(b) In order to simplify the construction, to
utilize the water-jet itself as ejector. Fig. 3
shows this form of construction, the vessel I
being provided with the air tube 2, nozzle 3, and
water-pipe 4, as described with reference to Fig.
l; but instead of the ejector 6 fed by a tube 5,
the water jet is itself used as ejector by arrang
ing a suction tube I 3 extending from near the
bottom of the vessel l to an ejector chamber I4
10 surrounding the upperend of the jet nozzle 3.
What I claim is:
1. In water-jet apparatus of the character de—
scribed, means for controlling the ?otation of
the apparatus, comprising a jet-nozzle, a hollow
15 body adapted to support said jet-nozzle at the
surface of a sheet of water, means for supplying
water under pressure to said jet-nozzle, an air
pipe entering said hollow body, the outer end of
said air pipe being above said surface when said
20 body ?oats with said jet-nozzle upwards, said
hollow body having an ori?ce opening below said
surface when said body ?oatswith said jet-nozzle
upwards, and means for driving water out of
said body by the operation of said water-jet.
2. An automatically submersible water-jet ap
25
paratus, comprising a ?oating vessel, said vessel
having an ori?ce below the surface of the water
in which said vessel ?oats, a water-jet nozzle
carried by said vessel, a pipe supplying water
30 under pressure to said nozzle, an air pipe entering
said vessel, the outer end of said air pipe being
above the surface of the water in which said
' vessel ?oats, the inner end of said air pipe so
located as to trap air within said vessel when
water enters through said ori?ce, an ejector
adapted to discharge water from said vessel
through said ori?ce, and a branch pipe feeding
said ejector with water under pressure during
the supply of water to said nozzle.
3. An automatically submersible water-jet ap~i
paratus, comprising a ?oating vessel, said vessel
having an ori?ce below the surface of the water
in which said vessel ?oats, a water-jet nozzle 10
carried by said vessel, awater-pipe adapted to
supply water under pressure to said nozzle, an
air pipe entering said vessel, the outer end of
said air pipe being above the surface of the
water in which said vessel ?oats, the inner end
of said air pipe so located as to trap air within
said vessel when water enters through said ori
?ce, an ejector adapted to discharge water from
said vessel through said ori?ce, a branch pipe
feeding said ejector with water under pressure
during the supply of water to said nozzle, a sup
plementary ejector adapted to discharge water
from said body during submersion, said supple
mentary ejector being of greater power than the
?rst mentioned ejector, means including a three- h
Way cock for feeding said supplementary ejector
with water from said Water pipe, and a ?oat car
ried by said vessel, said ?oat controlling said cock
to direct the water'from said water pipe to said
supplementary ejector when said vessel is sub
merged and to said Water-jet nozzlewhen said
vessel is awash.
LEON HEIDMANN.
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