Gases are Employed.
Year: 1885

page_text: шалшь 100,
Gases are Employed.
படிப
We, RICHARD SCHWALBE of 35 Stollbergerstrasse, Chemnitz, Kingdom of Saxony,
Germany, Managing Director of and on behalf of the Company Maschinenfabrik
Germania, vormals J. S. Schwalbe & Sohn of N° 7 Fabrikstrasse Chemnitz
aforesaid, and PETER EFFERTZ of 66 Zschopauerstrasse Chemnitz aforesaid, Engineer
do hereby declare the nature of said invention for "IMPROVEMENTS IN OR CON-
NECTED WITH STUFFING BOXES OF MACHINES FOR MAKING ICE AND ENGINES
WHEREIN COLD VAPOURS, AIR OR GASES ARE EMPLOYED to be as follows:-
"
-
In order to ensure the tightness of the interior of the stuffing boxes in freezers
or machines for making ice in which either ammoniacal gases or any other suitable
gas is used as medium for producing freezing, the interior of such stuffing boxes is
subjected to the lowest possible pressure. This very low pressure is produced by
subjecting the vapours or gases in the interior of the stuffing boxes to an adequate
reduction of pressure which reduction is effected either by condensation by means
of a medium of refrigeration of any convenient kind, or by absorption produced
by any convenient means of absorption.
In order to obtain this reduction of pressure the gases or vapours which have
entered the interior of such a stuffing box, for example, a stuffing box of a freezing
machine, are by a pipe connected thereto led to a condenser of any convenient
form or mode of action. This condenser may be inserted into the suction pipe of
the pump, and be provided with a refrigerating coil as a continuation of the pipe
connected to the stuffing box. This arrangement offers the advantage, that the
cold vapours of the suction pipe themselves effect the condensation.
For receiving the products of condensation, a collecting reservoir may be disposed
which may also be conveniently placed around the suction pipe for retaining the
lowest possible temperature of the same.
The lower the degree of temperature can be brought in the condenser in the way
represented or in any other equivalent way, the more powerful will be the conden-
sation effected as well as the reduction of the pressure of gases in the interior of
the stuffing box. Thus the desired reduction of pressure, and thereby the more

page_text: efficient tightness to the outside, depends on the more or less powerful action of
the refrigerating medium actually employed.
Instead of producing the said reduction of pressure by means of condensation,
it may be produced as above mentioned, also by absorbing the gases or vapours
which have entered the interior of the stuffing boxes.
For this purpose, these gases or vapours are introduced into a conveniently
shaped and conveniently placed reservoir containing chloride of calcium, charcoal,
oil or any other energetically acting means of absorption, by which the said gases
or vapours are more or less completely absorbed. After saturation of the medium
of absorption, the absorbed gases or vapours may be regained by heating, or they
may be brought again in the circuit of the machine, making at the same time the
medium of absorption again fit for new absorbing activity.
The gases or vapours either go directly in the reservoir for absorption or they
are previously submitted to a cooling which may be effected by a refrigerating coil
led through the suction pipe, this latter arrangement offers this advantage, that the
temperature of the gases or vapours is reduced by the cold vapours of the suction
pipe and that the medium of absorption is kept cool whereby the same can act
the more energetically. If the gases are not cooled before entering the reservoir
for absorption the medium of absorption may itself be cooled, in order to obtain
an energetical absorption.
For recovering the gases or vapours or for introducing the same again in the
circuit of the machine and for the re-generation of the means of absorption, the
absorption reservoir is heated which may conveniently be effected by a heating
coil but also may be effected by any other suitable heating apparatus, or instead of
the same by means of a pump, jet-blowing apparatus or any equivalent.
On the aforesaid collecting reservoir there is provided a gauge which indicates
the level of the liquid products of condensation therein. According to the more
or less efficient tightness of the stuffing of the boxes, this level will be raised
more or less quickly and thus the indicator will afford at the same time a means of
controlling the more or less efficient tightness of the stuffing boxes.
By connecting a pipe from the collecting reservoir with the delivery pipe of the
compresser or with a pump or with a jet-blowing apparatus or else with a heating
apparatus for the collecting reservoir and by another pipe also connected to the
collecting reservoir the products of condensation may be brought to any part of
the establishment.
For indicating the pressure in the pipe from the stuffing box and in the reservoir
of absorption, two pressure gauges are connected thereto.

page_text: for Making Ice, and Engines wherein Cold Vapours, Air, or
Gases are Employed.
We, RICHARD SCHWALBE of 35 Stollbergerstrasse, Chemnitz, Kingdom of Saxony,
Germany Managing Director of and on behalf of the Company Maschinen Fabrik
Germania, vormals T. S. Schwalbe & Sohn of No 7 Fabrikstrasse, Chemnitz
aforesaid and PETER EFFERTZ of 66 Zschopauer strasse Chemnitz aforesaid Engineer
do hereby declare the nature of said invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:-
:
In order to ensure the tightness of the interior of the stuffing-boxes in freezers
or machines for making ice in which either ammoniacal gases or any other suitable
gas is used as medium for producing freezing, the interior of such stuffing boxes
is subjected to the lowest possible pressure. This very low pressure is produced by
subjecting the vapours or gases in the interior of the stuffing boxes to an adequate
reduction of pressure which reduction is effected either by condensation by means
of a medium of refrigeration of any convenient kind, or by absorption produced
by any convenient means of absorption.
In order to obtain this reduction of pressure the gases or vapours which have
entered the interior of such a stuffing box, for example, a stuffing-box of a freezing
machine as for instance shewn at A Figure 1 are by a pipe connected thereto led
to a condenser of any convenient form or mode of action. This condenser such
for instance as shown at B Figure 1 may be inserted into the suction pipe C of the
pump, and be provided with a refrigerating coil b as a continuation of the pipe a
connected to the stuffing box A. This arrangement offers the advantage, that the
cold vapours of the suction pipe themselves effect the condensation.
For receiving the products of condensation, a collecting reservoir D may be
disposed which may also be conveniently placed around the suction pipe part C¹
for retaining the lowest possible temperature of the same.
The lower the degree of temperature can be brought in the condenser in the
way represented or in any other equivalent way, the more powerful will be the
condensation effected as well as the reduction of the pressure of gases in the interior
of the stuffing-box. Thus the desired reduction of pressure, and thereby the
greater the facility for tightening up the gland and the more efficient tightness to
the outside, depends on the more or less powerful action of the refrigerating medium
actually employed.
Instead of producing the said reduction of pressure by means of condensation, it
may be produced as above mentioned, also by absorbing the gases or vapours,
which have entered the interior of the stuffing boxes.
For this purpose, these gases or vapours are as shewn in the sectional view
Figure 2 introduced into a conveniently shaped and conveniently placed reservoir E
containing chloride of calcium, charcoal, oil or any other energetically acting means
of absorption, by which the said gases or vapours are more or less completely
absorbed. After saturation of the medium of absorption, the absorbed gases or
vapours may be regained by heating, or they may be brought again in the circuit
or cycle of operations of the machine, making at the same time the medium of
absorption again fit for new absorbing activity.
The gases or vapours either go directly in the reservoir E for absorption or they
are previously submitted to a cooling, which may be effected by a refrigerating

page_text: '
coil bled through the continuation B of the suction pipe C. This latter arrange-
ment offers this advantage; that the temperature of the gases or vapours is
reduced by the cold vapours of the suction pipe and that the medium of absorption
is kept cool whereby the same can act the more energetically. If the gases are not
cooled before entering the reservoir for absorption, the medium of absorption may
itself be cooled, in order to obtain an energetical absorption.
For recovering the gases or vapours, or for introducing the same again into the
circuit or cycle of operations of the machine and for the regeneration of the means
of absorption, the absorption reservoir E is heated, which may conveniently be
effected by a heating coil d, but it also may be effected by any other suitablo
heating apparatus or instead of the same by means of a pump, jet blowing appa-
ratus or any equivalent appliance.
On the aforesaid collecting reservoir D Figure 1, there is provided a guage c the
glass of which indicates the level of the liquid products of condensation therein.
According to the more or less efficient tightness of the packing, in the stuffing.
boxes, this level will be raised more or less quickly and thus the indicator will
afford at the same time a means of controlling the more or less efficient tightening
and tightness of the stuffing boxes.
up
:
By connecting a pipe g from the collecting reservoir D with the delivery pipe of
the compresser or with a pump or with a jet blowing apparatus or else with a
heating apparatus for the collecting reservoir D and by another pipe h also con-
nected to the collecting reservoir D the products of condensation may by the latter
pipe be brought to any part of the establishment.
For indicating the pressure in the pipe a from the stuffing box and in the
reservoir of absorption E two pressure gauges M. M¹ are connected thereto
respectively.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we claim is:-
First. The method of condensing or absorbing the ammoniacal or other gases
or vapours that enter the stuffing boxes of refrigerating machines or ice making
machines thus producing a reduction of pressure in the interior of such stuffing
boxes and facilitating their being tightened up from the outside substantially as
set forth.
Second. The method of recovering the condensed or absorbed gases or vapours
named in the preceding clain or of introducing the same again into the circuit or
cycle of operations of the machine by connecting-in the case of condensation of
the vapours the pipe g with the delivery pipe of the compresser or with a pump
or blowing engine or equivalent apparatus or through a heating apparatus for the
collecting reservoir D, or, in the case of absorption, by heating the absorption
reservoir E or by connecting the same with a pump or blowing engine or equivalent
apparatus, for drawing off the absorbed gases substantially as set forth.
Third. The method of controlling the tightness of the stuffing boxes by the aid
of the more or less quick rise of the level of the liquified vapours in the gauge
glass c on the collecting reservoir D.
Fourth. The apparatus constructed as and for the purposes described and also
specially the apparatus shown.
Dated this 4th day of March 1886.