Improvements in Raising Fluids, and Apparatus therefor.
Year: 1896

page_text: Date of Application, 17th June, 1896-Accepted, 29th Aug., 1896
COMPLETE SPECIFICATION.
Improvements in Raising Fluids, and Apparatus therefor.
I, FRIEDRICH GRUMBACHER, of No. 6 Kirchstrasse, Berlin, Factory Manager,
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 object of the present application consists in a mechanism by means of which
and the application of air under pressure saline solution, petroleum, water and
other fluids can be raised from a great depth, even from a depth of many hundred
metres without its being necessary to employ an air pressure whose pressure corre-
sponds to this height. This advantage possessed by my arrangement depends on
the circumstance that the outer column of fluid whose pressure acts upon the liquid
is utilised to effect a partial lifting of the saline solution, petroleum or the like.
The accompanying drawing shows the invention in three different modifications,
and moreover in section, wherein in consequence of the great length of the
arrangement the tubes are shown broken.
The arrangement of this apparatus is as follows:-
The conveying tube a according to Figure 1 is fixed in an air chamber 6 in such
a manner that its lower end reaches freely into the interior of the air chamber.
The lower part d of the latter is narrow and connected with the second part of the
forwarding tube d' which serves as a suction tube. The air chamber is connected
by means of the tube support c with the compressed air conductor and the whole
tubular system arranged as shown in the drawing and sunk so low in the fluid to
be raised that the lower end of the tube d¹ touches the liquid.
According to Figure 2 the upper part of the air chamber b is so arranged that
the air pressure tube 61 is not first connected to a support but is fixed parallel to
the delivery tube a in the chamber.
According to Figure 3 the delivery tube a is connected with the air chamber b
in such manner that it does not project into the same. On the other hand the end
of the compressed air tube b' which is bent up underneath in horse shoe form
projects into this chamber in such a manner that the exit opening is in line with
the axis of the conducting tube.
The method of operating this new arrangement is as follows:-
The mechanism is sunk so deep that the lower tube d¹ touches the liquid. The
compressed air introduced into the chamber d enters in the conducting tube a
forms in the same an air space and strives to rise upwards. This air space
consequently pushes the liquid above it upwards. The higher however that the air
space rises the less will be the pressure of the column of liquid in the conducting
tube and consequently the more the air space expands. Consequently there
follows alternately always a water space and an air space so that in this manner a
continuous lifting of the liquid portions is effected. By the use of the long
delivery tube the liquid can be raised from the deepest part of the bore hole and
thereby that the outer column of fluid acts upon the same it is possible to work
with much less pressure of compressed air. As shown in the drawing the outer
column of fluid drives the liquid in the conducting tube upwards and causes the
same to rise which is then further delivered upwards by the air space and reaches
the exit. The delivery of the liquid is in this manner continuous. If it be found
that from the upper exit pipe no liquid, petroleum or the like flows then the
mechanism must be sunk deeper so that the lower end of the tube d' again connects

page_text: with the level of the fluid. Arrangements for the same purpose hitherto in use
have experienced great difficulties because the great depths enabled the raising of
the liquid only by means of a series of lifting devices.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The arrangement for the raising of saline solution, petroleum, water, and
other fluids by means of compressed air characterised by the central arrangement of
the forwarding tube, in an air chamber whose lower end continues in the dimension
of the forwarding tube and is connected with a second part of the latter, whilst the
requisite air pressure is conducted into the pressure chamber by means of a special
tube in such a manner that the compressed air is delivered sideways in exactly
corresponding quantities to the quantities of the fluid to be raised which flow in;
the friction of the fluid on the sides of the tube being diminished by means of the
air bubbles created and by the formation of air spaces or air cushions as well as
the expansiveness of the latter the lifting of the fluid is quickly effected so that
with this arrangement saline solutions, petroleum, water or the like can be raised
out of very great depths and in which the fluid pressure of the outer column of
liquid acts upon the fluids and assists the rise of the same.
2. A further modification of the arrangement set forth in Claim 1 characterised
by having the lower end of the air conducting tube bent in horse shoe form and the
shorter arm of the same introduced centrally into the air conducting chamber in
such a manner that the orifice of the same corresponds to the axis of the forwarding
tube for the object indicated in: Claim 1.
Dated this 17th day of June 1896.
W. P. THOMPSON & Co.,
Patent Agents for the Applicant.