AN IMPROVED METHOD OF PRODUCING A VACUUM
Year: 1885

page_text: I, MATHIAS NEUHAUS, Engineer and Manufacturer, of 104/105 Alt-Moabit,
Berlin, in the German Empire, do hereby declare the nature of my invention for
AN IMPROVED METHOD OF PRODUCING A VACUUM to be as follows:-
"
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This invention relates to a method of producing, by means of pistonless steam-
pumps or pulsometers, whether provided with one or two chambers, a vacuum
which can advantageously be employed in the evaporation of liquids, in steam-
engines, for withdrawing air from water in making crystal ice, and for other
purposes.
According to the said method the pipe serving as the suction pipe, in the
employment of the pulsometer as a liquid-pump, is suitably connected with the
space in which a vacuum is to be formed, and into the suction-space of the pulso-
meter or the chambers of the same, is introduced water, which can also be directly
drawn in by the pulsometer.
In carrying the said invention into practice a pipe, provided with a stop-valve,
serves to connect the pulsometer with the vacuum space. Water is introduced
through a tube into the suction air-chamber, or through a tube into the space below
the suction-valves. If the pulṣometer is sufficiently filled with water, so that the
valves can commence their operation, the movement of the water in the chambers
will at once commence on steam being introduced through the steam admission
pipe, whilst during the first stage, according to the pressure prevailing in the space
in which the vacuum is to be formed, a greater ascent of the water level in the
chambers at every stroke of the pulsometer will occur. During the formation of the
vacuum this rise of the water level gradually diminishes.
Instead of introducing the water into the suction-space, it can be conveyed
directly into the chambers, that is to say, above the suction-valves through suitable
tubes which are provided with retaining-valves. In like manner the space in which
the vacuum is to be formed might also be connected with the suction-chamber by
a separate pipe likewise provided with a retaining valve, if this arrangement is
better adapted to the construction of the pulsometer.
As already stated, the method described of producing a vacuum can be used for
the most varied purposes, for instance the pulsometer may be connected with a
surface condenser for the purpose of drawing off and condensing the exhaust steam
Prine 8I

page_text: of a steam engine. The pulsometer may also be connected with an ordinary
injection condenser. The exhaust steam coming from the cylinder of the engine
passes through a tube into the condenser. The vapours which have not been
condensed in the condenser and the air and other gases are drawn off by the
pulsometer. This arrangement is especially adapted for use with existing condensers.
The pulsometer replaces in this case the air-pump. If the pulsometer is suitably
constructed the exhaust-steam can also be directly conveyed to the pulsometer the
condenser being omitted.
If the pulsometer is to be employed for the conveyance of water, in addition to
the formation of a vacuum, a special pipe having a stop-valve must be arranged on
the suction-tube. In case only water is to be conveyed certain of the pipes must
be closed, whilst in the formation of a vacuum said special pipe must be closed.
The pipe which conveys the hot water together with the air and gases into the
atmosphere can be provided with a stop-valve when water is to be conveyed
through the delivery pipe to an elevated reservoir. It will however in general be
most desirable to let the hot water simply run out freely from the discharge tube.
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page_text: I, MATHIAS NEUHAUS, of 104 Alt-Moabit, Berlin N.W. Germany, do hereby
declare the nature of the 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 a method of producing a vacuum by means of pistonless
steam-pumps or pulsometers whether provided with one or two chambers.
The said method can be advantageously employed in the evaporation of liquids,
in steam-engines, for withdrawing air from water, in making crystal ice, and for
other purposes.
According to the said method the pipe serving as the suction pipe in the
employment of the pulsometer as a liquid-pump is suitably connected with the
space in which a vacuum is to be formed, and into the suction-space of the pulso-
meter or the chambers of the same is introduced water, which can also be directly
drawn in by the pulsometer.
In the accompanying drawing I have represented various examples of the
application of the pulsometer for the purpose stated.
A figures 1 and 2 is the pipe which serves to connect the pulsometer with the
vacuum space and which is provided with the stop valve s¹.
In the apparatus shown in Figure 1 the water is introduced through the tube a
into the suction air-chamber B and in the apparatus shown in figure 2 through the
tube a¹ into the space below the suction-valves.
If the pulsometer is sufficiently filled with water so that the valves can commence
their operation, the movement of the water in the chambers will at once' commence
on steam being introduced through the steam admission pipe i, whilst during the
first stage, according to the pressure prevailing in the space in which the vacuum
is to be formed, a greater ascent of the water level in the chambers at every stroke
of the pulsometer will occur. During the formation of the vacuum the rise of the
water-level gradually diminishes.
Instead of introducing the water into the suction-space, it can be conveyed
directly into the chambers, that is to say above the suction-valves through tubes b
and b', figure 3, which are provided with retaining-valves d. In like manner the
space in which the vacuum is to be formed might also be connected with the
suction-chamber by a separate pipe likewise provided with a retaining valve, if
this arrangement is better adapted to the construction of the pulsometer.
As already stated, the method described of producing a vacuum can be used for
the most varied purposes.
Figure 2 shows, for instance, the connection of the pulsometer with a surface
condenser K, for the purpose of drawing off and condensing the exhaust steam of a
steam engine.
Figure 4 represents the connection of the pulsometer with an ordinary injection
condenser K. The exhaust steam coming from the cylinder of the engine passes
through the tube r into the condenser K¹. The vapours which have not been

page_text: condensed in the condenser K¹ and the air and other gases are drawn off through
the tube A by the pulsometer P. This arrangement is especially adapted for use
with existing condensers The pulsometer replaces in this case the air-pump. If
the pulsometer is suitably constructed the exhaust steam can also be directly
conveyed to the pulsometer and the piper be then directly connected with the
pipe A the condenser K¹ being omitted.
In all the Figures, D indicates the pipe which serves for discharging the hot
water together with air and gases. If the pulsometer is to be employed for the
conveyance of water, in addition to the forination of a vacuum a special pipe S,
figures 1, 2 and 3 having a stop-valve must be arranged on the suction-tube. In
case only water is to be conveyed certain of the pipes A and a or a¹ or b. b¹
respectively must be closed whilst in the formation of a vacuum said special pipe S
must be stopped.
The pipe D figure 1 can be provided with a stop-valve s¹¹, when water is to be
conveyed through the delivery pipe T to an elevated reservoir. It will however,
in general, be most desirable to let the hot water simply run out freely from the
discharge tube D.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is-
The method of producing a vacuum by means of pistonless steam-pumps or
pulsometers, the said method being characterized, by the connection of the space
in which a vacuum is to be formed with the suction-space of the pump, water
being simultaneously conveyed or drawn into the suction-space or the chambers of
the pulsometer.
Dated this 11th day of August 1886.
HASELTINE, LAKE & Co.,
Agents for the Applicant.