Improvements in Apparatus for Raising Fluids to any desired Point by Means of Compressed Air.
Year: 1895

page_text: Date of Application, 25th Oct., 1895-Accepted, 7th Mar., 1896
COMPLETE SPECIFICATION.
Improvements in Apparatus for Raising Fluids to any desired Point
by Means of Compressed Air.
I, FRIEDRICH MAURICE GRUMBACHER, Director of Berlin, Kirchstrasse 6,
Kingdom of Prussia, German Empire 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 present invention consists of an apparatus by means of which fluids of all
kinds can be raised to any height desired through the agency of compressed air.
Fluid and air are forced to ascend the syphon, by the introduction in the syphon
of compressed air, in definite, alternate layers of prescribed dimensions, making
their exit by the opening at the upper end. To use the apparatus in question for
raising fluids from any desired depth, an apparatus is so arranged upon several
terrace-like, super-imposed stations that the water can be pumped from one station
to the other to any height. The whole of the apparatus can be worked by one
common compressor. The accompanying drawing shows the subject of this
invention.
Fig. 1 being a longitudinal plan through the terrace-shaped, super-imposed
apparatus, and
Fig. 2 a side view.
The main conduit & passes from the compressor a, which is filled by means of an
air pump with compressed air it being possible to shut off the conduit through the
agency of the valve e. A number of auxiliary conduits d, e, f, t (4 are represented
in the drawing) corresponding to the depth of the shaft, branch off from the
main conduit. Each one can be shut off independently with the regulating
valves g, h, i, q. To use the apparatus, cylindrical vessels k, l, m, r are superimposed
terrace-like one over the other. The auxiliary tube e, provided with a closing
cap el and built into the ascending tube, n, is then introduced into the lowest
vessel k, open below, to ths of its length. The valves c and are thereupon opened
thus allowing the compressed air to act upon the water in k, while the latter is
pumped into the vessel 1. The process is continued in the same way, the valve g,
which is automatically regulated by the position of the water, opening the conduit d
provided with a closing cap d' and raising the water pumped in the direction of 1,
through the syphon o into the vessel m, whence in the same way, the water is
carried by means of the air-tube f through the syphon p to the vessel r and so on
through the syphons to the surface. As already mentioned, the number of the
stations must depend entirely upon the depth of the shaft. The height to which
the water can be pumped is also theoretically unlimited. This system specially
adapted for raising water from mine shafts and exceptionally deep springs.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, that, what I claim, is:
Method and apparatus for raising fluids to a theoretically unlimited height by
means of compressed air characterised, by ascending tubes driven into the ground
and furnished internally with pressure tubes superimposed terrace-like upon one
another, the pressure pipes introduced into the middle of the ascending tubes being
provided below with an arched closing cap or other suitable contrivance, for the
purpose of giving to the compressed air an ascending movement contrary to the

page_text: exit, and bringing about the raising of the fluid out of one ascending tube into
the other until the desired height is attained.
Dated this 23rd day of October 1895.
ROBERT KRAYN,
Agent for Applicant.