Year: 1888

page_text: his Specification was, upon the 10th day of October 1889, Ainended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
A Commun
of New York, United States of America, Mechanical Engineer.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors, 6 Lord Street, Liverpool, and 6 Bank Street Manchester, both in
the County of Lancaster, and 323 High Holborn, in the County of Middlesex, Civil
Engineer, 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 invention has for its object, to improve the devices and mechanism at present
employed in ice and refrigerating machines that operate upon the absorption
principle, and particularly the still and gas receiving and rectifying devices thereof,
and consist of the improved processes and mechanisms hereinafter described and
claimed.
Heretofore great difficulty has arisen in the practical operation of absorption ice
machines from what is known as the boiling over of the liquid contents of the
distilling retorts, and especially so in machines in which the hot distilled gas on its
passage from the distilling retorts is used to heat the incoming cold strong water that
supplies the distilling retorts. Various devices have been heretofore used for
conducting and receiving the heated gas from the distilling retorts, but in all of them
there has been a progressively forward movement of the gas from the distilling
retorts over to the condensing apparatus without efficient checks to prevent boiling
over, and where the distilled gas has on its upward passage from the distilling
retorts been employed to heat the incoming strong water, stand pipes have been used
to effect that end in which the distilled gas is brought into actual contact with the
water in various ways. The improved methods and apparatus herein described
prevent the accident of boiling over and other incidental evils, by performing the
operation of beating the incoming strong water by means of the outgoing hot distilled
gas, and thereby accomplishing also the rectification of the distilled gas, all without
actual physical contact of the cold water and hot gas, and the improved methods and

page_text: apparatus herein described further prevent boiling over and remedy it if it begins to
occur and accomplish simultaneously a continuous rectification of the distilled gas,
by the interposition of suitable obstructions to the progressively forward movement
of the distilled gas from the distilling retort over to the condensing apparatus with
suitable water return vents or outlets back to the distilling retorts all as hereinafter
described and claimed.
The accompanying drawings represent the improvement in its preferred form,
showing all the parts of an ice machine embodying the invention that are necessary
to be shown to a full and clear understanding of the invention; the parts not shown
being such as are well known in absorption ice machines.
A represents the retort or distilling vessel. It is of any desired or usual shape,
and is suitably supported upon an iron frame or upon masonry, It has steam box
coils B placed inside of the same in its lower part in the usual way.
The strong
water or aqua ammonia is pumped up in any usual way by a steam pump, into the
supply pipe C and down through the rectifying coil D and trap E, and pipe F, all
continuing such supply pipe C and poured into the bottom of the still A and
preferably as shown at one end of the still, the weak water being forced out of
the still at the other end of the still through the pipe G. The retort has gas outlet
pipes H, H, preferably two in number, one at the strong water end of the still, and
the other at the weak water end of the still, extending upward from the upper part of
the still, and opening into the gas receiver J. This gas receiver is a hollow casting
cylindrical in general shape, flat on top but having inwardly slanting sides at the
bottom. At the upper parts of its sides it has gas inlet openings J, receiving the
pipes H.
At the bottom it has a water outlet opening J2 connecting with the water
outlet pipe K, which extends down into the lower part of the still A, so that its lower
end, which is open, is always below the surface of the water in the still and thereby a
water trap is formed preventing the back-flow of the gas, down the pipe K into the
still. The gas receiver J also has a gas outlet opening J³ in the centre of the top
connecting with the central opening in the bottom of the rectifier L.
The gas
receiver Jalso has two diaphragms or partitions M, depending from the roof or top of
the receiver between the gas inlet openings J', and the gas outlet openings J³, and
extending in front of and below said gas inlet openings J', thereby compelling the
hot gas rising from the still and passing up the pipes H and into the gas receiver J,
to turn downward and follow the course indicated by the arrows in the drawing.
This throws down to the bottom of the gas receiver all water that may have boiled up
and over, or being carried up by the gas from the still, whence it runs back through
pipe K to the still, the gas continuing on up through the gas outlet J³ into the centre
of the rectifier L. This rectifier L is placed above the gas receiver J, as the gas
receiver is, in turn, placed above the still A. Inside the rectifier which is a long
upright cylinder, shown in the drawings in section, is the coil D continuing the supply
pipe Cand carrying the strong water to the still. This strong water coil is a close
coil of piping, the pipe being wound spirally into a general hour glass shape, and
provided with a central diaphragm or plate N impervious to the hot gas that is rising
from the gas receiver, and which forces the gas between the close coils of the piping,
and so brings it into closer and longer contact with the piping carrying the strong
water supply. The diaphragm N prevents the passage of the gas directly up through
the centre of the rectifier. This strong water coil D has preferably a trap E in its
lower end, so as to hold the strong water longer in the coil. The cold strong water
coming down the supply pipe, and the hot wet gas rising up from the gas receiver
are thus caused to respectively heat and cool each other, the gas being thereby
rectified, and the cold water being thereby partially heated before reaching the still.
The passage way D for the strong water, is continued through the opening J³, the gas
receiver J, the opening J and the pipe K, by the small pipe F as shown, discharging
in the bottom of the still in the water-trap form by the pipe K and the water in the
still, and preferably at one end of the still as shown. The water condensed from the
gas in the rectifier runs down through the gas receiver and water outlet pipe K into
the bottom of the still. The rectified gas passes up through the central opening in

page_text: the top of the rectifier and through the pipe O to the condenser P, which may be of
any usual or desired construction. Its position in the drawings has been merely
indicated, as well as the position of the liquid gas jar Q. These and the remaining
well known parts of an absorption ice machine form no part of this invention, and
it has not been deemed necessary to show them or to describe them as they are well
known. The liquid gas is discharged as desired into the freezing tank, and the gas
there expanded and the cold produced. The spent gas is re-absorbed in the ordinary
way, and the strong water thereby formed is stored in the strong water receiver and
from there pumped in the usual way through the strong water supply pipe and
coil D into the still. The weak water forced from the still through the pipe G is
cooled in any well known way before going to the absorber.
But the invention
does not relate to these other parts of an ice machine.
The operation of the improved device is as follows :—
The aqua ammonia is heated in the distilling retort by the steam coils therein.
The gas passes up into the gas receiver, and is thrown down toward the bottom of the
same by the diaphragms M before it can pass up into the rectifier. This throws down
into the bottom of the gas receiver any water that has been carried bodily up by the
gas from the still, and this water runs directly back through the pipe K into the
bottom of the still. Thus boiling over" is remedied, and its occasional disastrous
effects entirely avorted, and boiling over into tho condenser is wholly prevented.
Thus the gas receiver by its peculiar and novel construction with the diaphragm M
separates from the gas any water that may have been carried up with it, and
discharges such water back into the bottom of the distilling retort, without disturbing
the continued operation of the machine, and by its natural and normal operation.
The hot gas passing into the rectifier is there brought into thermal contact with the
descending supply of cold strong aqua ammonia without coming into actual physical
contact with the same, the gas giving up its heat to the water, and thereby itself
being rectified and freed from watery vapor and dried, the water of condensation
being discharged downward into the distilling retorts; and the strong aqua ammonia
taking up the heat from the gas and being thereby prepared for its heating in the
still. The rectified gas is then condensed, stored, and utilized as usual, and the spent
gas re-absorbed by the weak water and the operation repeated.
In the rectifier it is also preferable to use an outer and encircling coil of piping R
to carry running cold water, and thereby perfect the rectifying of the gas in the
rectifier. This pipe enters at top and exits at bottom of the rectifier.
The specific forms of apparatus shown may be varied in many ways, without
departing from the invention."
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
:―
1. In an ice or refrigerating machine, ngas receiving or conducting device
recurved-upon itself between the position of the distilling and the condensing devices,
whereby the products of the distillation are thrown downward for a short distance
before condensation, substantially us and for the purposes set forth.
2. In an ice or refrigerating machine a gas receiving or conducting device-reenrved
apon-itself between the position of the distilling and the condensing devices-und
having a water outlet or vent at the bottom of the recurved portion, whereby the
products of the distillation are thrown-downward for a short distance before conden-
sation, and the distilled gas freed from water, substantially as and for-the-purposes
set-forth.
3. In combination with the distilling retort of an ice or refrigerating machine, n
gas receiving or conducting device recurved-upon-itself between-the position of the
distilling and the condensing devices and having a water ontlet or vent-at-the-bottom
of the recurved portion-connecting with the bottom of the distilling retort, whereby
the products of distillation are thrown downward for a-chort distance before
condensation, and the distilled gas freed from water and the water-returned to

page_text: the body of water in the distilling retort, substantially as and-for-the-purposes
set forth.
4. In an ice or refrigerating machine a gas receiver having a diaphragm-opposite
the gas inlet pipes and a water outlet or vent at the bottom, whereby the entering gas
is thrown downward and freed from water, substantially as and for the purposes
set-forth.
5. In un ice or refrigerating machine a rectifying device having within it a coil or
separate passage way for the cold aqua ammonia, whereby the latter is heated and the
gas to be rectified is cooled without actual contact of the two, substantially-as-and-for
the purposes set forth.
6. In an ice or refrigerating machine u rectifying device having within it a coil or
separate passage way for the cold aqua-ammonia, and a water outlet or vent at its
lowest point, whereby the aqua-ammonia is heated and the gas to be rectified-is-cooled
without actual contact of the two and the water condensed from-the-cooled-gus-is
removed, substantially as and for the purposes set forth.
7. In combination with the distilling retort of an ice or refrigerating machine-and
its gas discharge pipes and gas conducting devices, a rectifying device having within
it a coil or separate passage way for the-cold aqua-ammonia and continuing such coil
or passage way; a supply pipe-discharging into the bottom of the distilling retort,
whereby the distilled gas is cooled and rectified, and the aqua ammonia is heated and
supplied at the bottom of the distilling retort without netual contact of the gas and
the aqua ammonia, substantially as and for the purposes set forth.
8. In an ice or refrigerating machine, a rectifying vessel having an hour glass coil
of piping for the cold nque-nmmonia, and-a-central-diaphragm in such coil, a gas
inlet and water-outlet vent at the centre-of the-bottom, and a gas outlet vent at the
centre of the top; whereby the gas to be rectified is cooled-and-freed from
water-vapor, and the aqua ammonia is heated, substantially as and for the purposes
set forth:
9. In an ice or refrigerating machine, a-rectifying vessel having an hour glass
coil of piping for the cold aqua ammonia, bent upward into a trap e² at its lower
portion, and a central diaphragm-in such coil, a gas inlet and water outlet vent ut
the centre of the bottom, and a gas-outlet vent at the centre of the top, whereby the
gas to be rectified is cooled and freed from water vapor and the aqua ammonia is
heated, substantially as and for the purposes set forth.
10. In combination with the distilling devices of an ice or refrigerating machine,
a gas receiving or conducting device having a downwardly conducting portion with-n
water ontlet or vent at the bottom of such downwardly conducting portion, and a
rectifying device having within it a coil or passage-way for the cold-aqua-ammonin
and a water outlet or vent at its lowest point, whereby the distilled-gns is freed
from water and from-water rapor, substantially as and for the purposes set
forth.
11. The process of freeing the products of distillation-in-an-ice or refrigerating
machine from water bodily carried up with them which consists in turning such
products of distillation downward for a short distance and then-upward, in their
passage from the distilling to the condensing apparatus, substantially as und for the
purposes set forth.
12. The process of rectifying the products of distillation in an ice or refrigerating
machine which consists in bringing the cold a
aqua-ammonia and the hot gas to-be
rectified into thermal contact without actual physical-contact of the two, substantially
as and for the purposes set forth.
13. In combination with the distilling retort of an ice or refrigerating machine
and its gas diseberge pipe or pipes, a gas receiver and a return water pipe connecting
the lower part of the gas receiver with the lower part of the distilling retort, whereby
any water in the gas receiver is returned to the distilling retort while the water trap
formed in the still by said return water pipe prevents the back flow of gas from the
gas-receiver into the distilling retort; substantially as and for the purposes set
Euth

page_text: 11. In combination with the distilling retort of an ice or refrigerating machine
and its gas discharge pipe or piper, a gas receiver, a return water pipe connecting the
lower part of the gas receiver with the lower part of the distilling retort, and forming
a water-trap-thereby, an aqua-ammonia supply pipe discharging in such trap,
substantially us and for the purposes-set forth."
15-1. In combination with the distilling retort of an ice or refrigerating machine
and its gas discharge pipe or pipes, a gas receiver, a return water pipe connecting
the lower part of the gas receiver with the lower part of the distilling retort and
forming a water trap thereby, a rectifier having a water outlet or vent at its lowest
point, and having within it a coil or separate passage way for the cold aqua ammonia,
and, continuing such coil, or passage way, a supply pipe discharging in the bottom
of the distilling retort, substantially as and for the purposes set forth.
16.-2. In an ice or refrigerating machine, a rectifying device, having within it a coil
or separate passage way for the cold aqua ammonia and a second coil for cold
running water, whereby the cold aqua ammonia is heated and the gas to be rectified
is cooled and freed from watery vapor without physical contact of the gas with the
cooling agents, substantially as and for the purposes set forth.
Dated this 30th day of January 1888.
WM. P. THOMPSON & Co.,
Agents for the Applicant.

page_text: Date of Application, 31st Jan., 1888
Specification Accepted, 2nd Mar., 1888
A communication from abroad by JAMES B. CRAFT of the City, County, and State
of New York, United States of America, Mechanical Engineer.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors, 6 Lord Street, Liverpool, and 6 Bank Street Manchester, both in
the County of Lancaster, and 323 High Holborn, in the County of Middlesex, Civil
Engineer, 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 invention has for its object, to improve the devices and mechanism at present
employed in ice and refrigerating machines that operate upon the absorption
principle, and particularly the still and gas receiving and rectifying devices thereof,
and consist of the improved processes and mechanisms hereinafter described and
claimed.
Heretofore great difficulty has arisen in the practical operation of absorption ice
machines from what is known as the boiling over of the liquid contents of the
distilling retorts, and especially so in machines in which the hot distilled gas on its
passage from the distilling retorts is used to heat the incoming cold strong water that
supplies the distilling retorts. Various devices have been heretofore used for
conducting and receiving the heated gas from the distilling retorts, but in all of them
there has been a progressively forward movement of the gas from the distilling
retorts over to the condensing apparatus without efficient checks to prevent boiling
over, and where the distilled gas has on its upward passage from the distilling
retorts been employed to heat the incoming strong water, stand pipes have been used
to effect that end in which the distilled gas is brought into actual contact with the
water in various ways. The improved methods and apparatus herein, described
prevent the accident of boiling over and other incidental evils, by performing the
operation of heating the incoming strong water by means of the outgoing hot distilled
gas, and thereby accomplishing also the rectification of the distilled gas, all without
actual physical contact of the cold water and hot gas, and the improved methods and

page_text: apparatus herein described further prevent boiling over and remedy it if it begins to
occur and accomplish simultaneously a continuous rectification of the distilled gas,
by the interposition of suitable obstructions to the progressively forward movement
of the distilled gas from the distilling, retort over to the condensing apparatus with
suitable water return vents or outlets back to the distilling retorts all as hereinafter
described and claimed.
The accompanying drawings represent the improvement in its preferred form,
showing all the parts of an ice machine embodying the invention that are necessary
to be shown to a full and clear understanding of the invention; the parts not shown
being such as are well known in absorption ice machines.
A represents the retort or distilling vessel. It is of any desired or usual shape,
and is suitably supported upon an iron frame or upon masonry. It has steam box
coils B placed inside of the same in its lower part in the usual way. The strong
water or aqua ammonia is pumped up in any usual way by a steam pump, into the
supply pipe C and down through the rectifying coil D and trap E, and pipe F, all
continuing such supply pipe and poured into the bottom of the still A and
preferably as shown at one end of the still, the weak water being forced out of
the still at the other end of the still through the pipe G. The retort has gas outlet
pipes H, H, preferably two in number, one at the strong water end of the still, and
the other at the weak water end of the still, extending upward from the upper part of
the still, and opening into the gas receiver J. This gas receiver is a hollow casting
cylindrical in general shape, flat on top but having inwardly slanting sides at the
hottom. At the upper parts of its sides it has gas inlet openings J¹, receiving the
pipes H.
At the bottom it has a water outlet opening J' connecting with the water
outlet pipe K, which extends down into the lower part of the still A, so that its lower
end, which is open, is always below the surface of the water in the still and thereby a
water trap is formed preventing the back-flow of the gas, down the pipe K into the
still. The gas receiver J also has a gas outlet opening J³ in the centre of the top
connecting with the central opening in the bottom of the rectifier L. The gas
receiver Jalso has two diaphragms or partitions M, depending from the roof or top of
the receiver between the gas inlet openings J, and the gas outlet openings J³, and
extending in front of and below said gas inlet openings J, thereby compelling the
hot gas rising from the still and passing up the pipes H and into the gas receiver J,
to turn downward and follow the course indicated by the arrows in the drawing.
This throws down to the bottom of the gas receiver all water that may have boiled up
and over, or being carried up by the gas from the still, whence it runs back through
pipe K to the still, the gas continuing on up through the gas outlet J³ into the centre
of the rectifier L. This rectifier L is placed above the gas receiver J, as the gas
receiver is, in turn, placed above the still A. Inside the rectifier which is a long
upright cylinder, shown in the drawings in section, is the coil D continuing the supply
pipe C and carrying the strong water to the still. This strong water coil is a close
coil of piping, the pipe being wound spirally into a general hour glass shape, and
provided with a central diaphragm or plate N impervious to the hot gas that is rising
from the gas receiver, and which forces the gas between the close coils of the piping,
and so brings it into closer and longer contact with the piping carrying the strong
water supply. The diaphragm N prevents the passage of the gas directly up through
the centre of the rectifier. This strong water coil D has preferably a trap E in its
lower end, so as to hold the strong water longer in the coil. The cold strong water
coming down the supply pipe, and the hot wet gas rising up from the gas receiver
are thus caused to respectively heat and cool each other, the gas being thereby
rectified, and the cold water being thereby partially heated before reaching the still.
The passage way D for the strong water, is continued through the opening J³, the gas
receiver J, the opening J2 and the pipe K, by the small pipe F as shown, discharging
in the bottom of the still in the water-trap form by the pipe K and the water in the
still, and preferably at one end of the still as shown. The water condensed from the
gas in the rectifier runs down through the gas receiver and water outlet pipe K into
the bottom of the still. The rectified gas passes up through the central opening in

page_text: the top of the rectifier and through the pipe O to the condenser P, which may be of
any usual or desired construction. Its position in the drawings has been merely
indicated, as well as the position of the liquid gas jar Q. These and the remaining
well known parts of an absorption ice machine form no part of this invention, and
it has not been deemed necessary to show them or to describe them as they are well
known. The liquid gas is discharged as desired into the freezing tank, and the
there expanded and the cold produced. The spent gas is re-absorbed in the ordinary
way, and the strong water thereby formed is stored in the strong water receiver and
from there pumped in the usual way through the strong water supply pipe Cand
coil D into the still. The weak water forced from the still through the pipe G is
cooled in any well known way before going to the absorber. But the invention
does not relate to these other parts of an ice machine.
The operation of the improved device is as follows:-
gas
The aqua ammonia is heated in the distilling retort by the steam coils therein.
The gas passes up into the gas receiver, and is thrown down toward the bottom of the
same by the diaphragmns M before it can pass up into the rectifier. This throws down
into the bottom of the gas receiver any water that has been carried bodily up by the
gas from the still, and this water runs directly back through the pipe K into the
bottom of the still. Thus "boiling over" is remedied, and its occasional disastrous
effects entirely averted, and boiling over into the condenser is wholly prevented.
Thus the gas receiver by its peculiar and novel construction with the diaphragm M
separates from the gas any water that may have been carried up with it, and
discharges such water back into the bottom of the distilling retort, without disturbing
the continued operation of the machine, and by its natural and normal operation.
The hot gas passing into the rectifier is there brought into thermal contact with the
descending supply of cold strong aqua ammonia without coming into actual physical
contact with the same, the gas giving up its heat to the water, and thereby itself
being rectified and freed from watery vapor and dried, the water of condensation
being discharged downward into the distilling retorts; and the strong aqua ammonia
taking up the heat from the gas and being thereby prepared for its heating in the
still. The rectified gas is then condensed, stored, and utilized as usual, and the spent
gas re-absorbed by the weak water and the operation repeated.
In the rectifier it is also preferable to use an outer and encircling coil of piping R
to carry running cold water, and thereby perfect the rectifying of the gas in the
rectifier. This pipe enters at top and exits at bottom of the rectifier.
The specific forms of apparatus shown may be varied in many ways, without
departing from the invention.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1. In an ice or refrigerating machine, a gas receiving or conducting device
recurved upon itself between the position of the distilling and the condensing devices,
whereby the products of the distillation are thrown downward for a short distance
before condensation, substantially as and for the purposes set forth.
2. In an ice or refrigerating machine a gas receiving or conducting device recurved
upon itself between the position of the distilling and the condensing devices and
having a water outlet or vent at the bottom of the recurved portion, whereby the
products of the distillation are thrown downward for a short distance before conden-
sation, and the distilled gas freed from water, substantially as and for the purposes
set forth.
3. In combination with the distilling retort of an ice or refrigerating machine, a
gas receiving or conducting device recurved upon itself between the position of the
distilling and the condensing devices and having a water outlet or vent at the bottom
of the recurved portion connecting with the bottom of the distilling retort, whereby
the products of distillation are thrown downward for a short distance before
condensation, and the distilled gas freed from, water and the water returned to

page_text: the body of water in the distilling retort, substantially as and for the purposes
set forth.
4. In an ice or refrigerating machine a gas receiver having a diaphragm opposite
the
gas inlet pipes and a water ontlet or vent at the bottom, whereby the entering gas
is thrown downward and freed from water, substantially as and for the purposes
set forth.
5. In an ice or refrigerating machine a rectifying device having within it a coil or
separate passage way for the cold aqua ammonia, whereby the latter is heated and the
gas to be rectified is cooled without actual contact of the two, substantially as and for
the purposes set forth.
6. In an ice or refrigerating machine a rectifying device having within it a coil or
separate passage way for the cold aqua ammonia, and a water outlet or vent at its
lowest point, whereby the aqua ammonia is heated and the gas to be rectified is cooled
without actual contact of the two and the water condensed from the cooled gas is
removed, substantially as and for the purposes set forth.
7. In combination with the distilling retort of an ice or refrigerating machine and
its gas discharge pipes and gas conducting devices, a rectifying device having within
it a coil or separate passage way for the cold aqua ammonia and continuing such coil
or passage way, a supply pipe discharging into the bottom of the distilling retort,
whereby the distilled gas is cooled and rectified, and the aqua ammonia is heated and
supplied at the bottom of the distilling retort without actual contact of the gas and
the aqua ammonia, substantially as and for the purposes set forth.
8. In an ice or refrigerating machine, a rectifying vessel having an hour glass coil
of piping for the cold aqua ammonia, and a central diaphragm in such coil, a gas
inlet and water outlet vent at the centre of the bottom, and a gas outlet veut at the
centre of the top, whereby the gas to be rectified is cooled and freed from
water vapor, and the aqua ammonia is heated, substantially as and for the purposes
set forth.
9. In an ice or refrigerating machine, a rectifying vessel having an hour glass
coil of piping for the cold aqua ammonia, bent upward into a trap e² at its lower
portion, and a central diaphragm in such coil, a gas inlet and water outlet vent at
the centre of the bottom, and a gas outlet vent at the centre of the top, whereby the
gas to be rectified is cooled and freed from water vapor and the aqua ammonia is
heated, substantially as and for the purposes set forth.
10. In combination with the distilling devices of an ice or refrigerating machine,
a gas receiving or conducting device having a downwardly conducting portion with a
water outlet or vent at the bottom of such downwardly conducting portion, and a
rectifying device having within it a coil or passage way for the cold aqua ammonia
and a water outlet or vent at its lowest point, whereby the distilled gas is freed
from water and from water vapor, substantially as and for the purposes set
forth.
11. The process of freeing the products of distillation in an ice or refrigerating
machine from water bodily carried up with them which consists in turning such
products of distillation downward for a short distance and then upward, in their
passage from the distilling to the condensing apparatus, substantially as and for the
purposes set forth.
12. The process of rectifying the products of distillation in an ice or refrigerating
machine which consists in bringing the cold aqua ammonia and the hot gas to be
rectified into thermal contact without actual physical contact of the two, substantially
as and for the purposes set forth.
13: In combination with the distilling retort of an ice or refrigerating machine
and its gas discharge pipe or pipes, a gas receiver and a return water pipe connecting
the lower part of the gas receiver with the lower part of the distilling retort, whereby
any water in the gas receiver is returned to the distilling retort while the water trap
formed in the still by said return water pipe prevents the back flow of gas from the
gas receiver into the distilling retort, substantially as and for the purposes set
forth..

page_text: 14. In combination with the distilling retort of an ice or refrigerating machine
and its gas discharge pipe or pipes, a gas receiver, a return water pipe connecting the
lower part of the gas receiver with the lower part of the distilling retort, and forming
a water trap thereby, and an aqua ammonia supply pipe discharging in such trap,
substantially as and for the purposes set forth.
15. In combination with the distilling retort of an ice or refrigerating machine
and its gas discharge pipe or pipes, a gas receiver, a return water pipe connecting
the lower part of the gas receiver with the lower part of the distilling retort and
forming a water trap thereby, a rectifier having a water outlet or vent at its lowest
point, and having within it a coil or separate passage way for the cold aqua ammonia,
and, continuing such coil, or passage way, a supply pipe discharging in the bottoni
of the distilling retort, substantially as and for the purposes set forth.
16. In an ice or refrigerating machine, a rectifying device, having within it a coil
or separate passage way for the cold aqua ammonia and a second coil for cold
running water, whereby the cold aqua ammonia is heated and the gas to be rectified
is cooled and freed from watery vapor without physical contact of the gas with the
cooling agents, substantially as and for the purposes set forth.
Dated this 30th day of January 1888.
WM. P. THOMPSON & Co.,
Agents for the Applicant.