A Device for Raising Liquids by means of Direct Acting Air-pressure.
Year: 1891

page_text: Date of Application, 24th Sept., 1891
Complete Specification Left, 6th Feb., 1892-Accepted, 26th Mar., 1892
PROVISIONAL SPECIFICATION.
A Device for Raising Liquids by means of Direct Acting
Air-pressure.
We, GUSTAV AUGUST BRÄUER and GUSTAV ADOLPH KADEN of Chemnitz
in the Empire of Germany, Manufacturers, do hereby declare the nature of this
invention to be as follows:-
The object of this invention is to provide an apparatus by means of which water
and other liquids can be raised by air pressure from pits or wells of any depth or
drawn from distant reservoirs without the necessity of placing the pump under-
ground or near the respective reservoirs.
With the improved apparatus the liquids do not undergo any change of
temperature and have the least possible friction in the apparatus. Moreover the
air pressure is so uniformly distributed that a wind chest as is required for beer
apparatus or similar devices, is dispensed with.
The improved apparatus is in the main constructed as follows:
A vessel of suitable shape and material, with a cover screwed or soldered on,
carries at the bottom a valve closing to the outside, through which the liquids are
drawn in case the apparatus is not placed direct into the liquid to be raised. Said
vessel has at the top a pipe through which it can receive air from an air pump.
The cover of the vessel has a tube valve, the small outlet openings of which
inside the vessel can be opened and closed by the raising or lowering of the valve
which is effected by a lever revolubly suspended inside the vessel and connected
with the valve, an indiarubber washer being provided for packing the valve. The
free end of said lever is guided between two stops of an upright rod siiding in
suitably placed and shaped holders and on which a float is adapted to move loosely
up and down. Through the cover of the vessel is furthermore passed a tube
through which the liquid rises, which passes a valve provided in said tube and is
led away through a rising tube connected therewith. The apparatus works as
follows:
The apparatus having been let down into the pit or well and being held by
suitable stays, air is pressed by an air pump into the vessel. This air escapes
again through the openings of the tube valve. Thereby the air in the vessel is
rarefied and water drawn in through the valve at the bottom of the vessel. The
water gradually rises in the vessel until the float bearing on the surface of the
water abuts against the stop of the upright rod and moves the latter upward,
whereby at the same time the lever is raised and consequently the outlet openings
of the tube valve are closed.
The air outlet being thus shut off, the air pressed in by the air pump commences
to press on the water drawn in and causes it to rise in the eduction tube and pass
through the respective valve into the rising tube mentioned above.
When the float
has descended and rests on a pin provided near the bottom end of the upright rod,
it draws the latter down through its weight, thereby pulling down the lever and
causing the same to re-open the tube valve, so that the suction process can be
commenced again. As always water remains in the eduction tube, an escape,
through this tube, of the air pressed in is excluded.
Dated this 24th day of September 1891.
HUELSEK & CO.,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
A Device for Raising Liquids by means of Direct Acting
Air-pressure.
We, GUSTAV AUGUST BRÄUER and GUSTAV ADOLPH KADEN of Chemnitz,.
in the Empire of Germany, Manufacturers, 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 :-
This invention relates to an apparatus for raising water or other liquids by air-
pressure from pits or wells of any depth or drawing the same from distant
reservoirs without the necessity of placing the pump underground or near the
respective reservoirs.
By the application of the improved apparatus the liquids to be moved do not
undergo any change of temperature by the transport itself as is the case with
injectors, pulsometers and similar apparatus. This is of importance in all cases
where a heating of the respective liquid is to be avoided for instance in distilling
or in chemical laboratories, with transport of acids etc.
The improved apparatus is furthermore so constructed that the friction which
the liquids undergo during transport, is as slight as possible, whereby a considerable
capacity is attained.
The peculiar construction of the apparatus allows of such a uniform distribution
of the air pressure that an air reservoir as is necessary in similar arrangements, for
instance in beer apparatus, is dispensed with.
To accomplish the said purposes, the improved apparatus represented by Figs. 1
and 2 of the accompanying drawing in vertical section and plan respectively is
composed as follows:
A vessel a of suitable shape which is either, as shewn in the drawing, cast and in
this case closed with a cover b screwed on, or may be made of annealed or
enamelled sheet iron or of any other suitable metal, in which cases the lid 6 may
be soldered on, carries at the bottom a valve e closing outwardly, through which
the liquids are drawn if the apparatus is not put direct in the liquid to be raised
and which is to be provided with a suitable protecting basket.
In vessel a terminates a tube f, through which atmospheric air can be pressed
into vessel a from an air pump of any construction.
In the lid of vessel a a tube valve is provided, the small outlet openings t of
which can be opened and closed by the raising or lowering of the valve which is
effected from lever revoluble about m, an india-rubber washers serving for
packing.
The free end of lever 1 is guided between two stops a of a rod u, which slides in
suitably shaped holders v and on which a float w moves loosely up and down. The
lid & has furthermore tightly packed therein a tube g, through which rises the
liquid to be raised, passing a valve h and being removed through an eduction
tube i.
The improved apparatus works as follows:
After the whole apparatus has been let down into the well and held therein by
corresponding stays c and d, air is pressed from the air pump through tube into
vessel a.
This air escapes at once through the openings t of the tube valve r;
thereby the air contained in vessel a is rarefied and water is drawn up through
valve e. The water thus gradually rises in vessel a until the float w bearing on the
surface of the water abuts against stop z of rod u, moving. the latter upwards,
lever being thereby simultaneously raised and closing the outlet openings of tube
valve r.
The air escape being thus closed, the air pressed in by the pump commences to
press upon the water drawn in and presses the same upward through tube g, valve
and tube i

page_text: g"
When float g has sunk down to pin of rod u, it draws the rod u downward by
its own weight, whereby lever likewise descends, re-opening the tube valve and
initiating again the suction process. As always water remains in the tube g, an
escaping of the pressed-in air through this tube is excluded.
The arrows in the drawings designate the direction of the inlet or outlet of air
or liquid. As mentioned above, the distribution of the air pressure is such, owing
to the peculiar construction of the apparatus, that an air reservoir becomes entirely
superfluous, practical experiments with the apparatus having shown, that the water
flows without any shocks to the outlet tube.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
A device for raising liquids by means of direct acting air pressure, in which the
air outlet valve r is alternately closed and opened by a float lever wl for the
continually entering air, substantially as illustrated and described.
Dated this 6th day of February 1892.
GUSTAV AUGUST BRÄUER.
GUSTAV ADOLPH KADEN.
By Huelser & Co.,
Their Agents.