Improvements in or connected with Apparatus for Lifting Liquids by Compressed Air.
Year: 1895

page_text: Date of Application, 22nd June, 1895-Accepted, 14th Sept., 1895
COMPLETE SPECIFICATION.
Improvements in or connected with Apparatus for Lifting Liquids
by Compressed Air.
I, FRIEDRICH MAURICE GRUMBACHER of 11 Brücken-Allee Berlin N. in the
Kingdom of Prussia, German Empire, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
With apparatus for lifting water or other liquids by means of compressed air,
it has hitherto been the custom to introduce the pipe conveying the compressed
air, into the lower extremity of the delivery-pipe or to conduct it down the pipe
itself thus diminishing the sectional area of the water inlet and it was consequently
found necessary to enlarge said inlet but this again involved a diminution of the
sectional area of the well itself being equivalent to a loss in the effective work
performed by the apparatus and had the further drawback that the space between
blast pipe and delivery pipe became choked with stones, gravel, mud etc. The
construction herein described has the quite novel property that it can be used for
dredging purposes, as the entire width of the delivery pipe remains unobstructed.
The object of the present invention is to remedy and do away with the disadvantages
above mentioned and the annexed drawing shows two different methods of carrying
out the idea.
Fig. 1 shows a longitudinal section of a combined delivery and blast pipe.
Fig. 2 is a cross section of Fig. 1 at the line A-B.
Fig. 3 shows a longitudinal section of the delivery pipe, with an encircling blast
pipe, and
Fig. 4 is a cross or lateral section of Fig. 3 at the line C-D.
The blast pipe b is introduced above the water inlet a, and the slanting
projections c c within the same, guide the blast in the direction of the arrow; by
this means the whole sectional area of the delivery pipe d is made available stones,
gravel etc. can now ascend the delivery pipe with the water, without impediment or
causing the delivery pipe a to be choked."
An additional advantage is the increased stability of the blast pipe through its
combination with the delivery pipe and the contrivances for fixing the former to
the latter hitherto in use, have become superfluous because the lower sections of
the combined blast pipe and delivery pipe can be cast in one piece. A further
advantage is that it is now not necessary to enlargen the lower inlet of the delivery
pipe. The construction shown in Fig. 3 consists in the delivery pipe being encircled
by the continuation of the blast pipe and thus forming a mantle e around same
whereby the blast pipe suitably shaped, enters the delivery pipe above the inlet a,
and the blast is guided in the desired direction as shown by the arrows, by means
of suitably curved projections fand¹.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I claim :
1. In apparatuses for raising liquids by means of compressed air the arrangement
of the blast pipe in such a manner that its lower section enters at the side of the
delivery pipe (d) at an opening (c²) or below the delivery pipe, for the purpose of
utilizing the entire sectional area of said delivery pipe and raising stones, gravel
and the like with the water, whereby the projections (c c¹) are provided for the
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page_text: purpose of assisting the upward motion of the blast as herein duly set forth and
particularly described.
2. In apparatuses as described in Claim 1, the arrangement that the lower section
of the blast pipe (b) is developed into an enclosing mantle (e) round the delivery
.pipe as herein duly set forth and particularly described.
Dated this 20th day of June 1895
ROBERT KRAYN,
Agent for Applicant.