IMPROVEMENTS IN EVAPORATING SACCHARING AND OTHER LIQUIDS OR JUICES
Year: 1879

page_text: LETTERS PATENT to Matthew Gill, of No. 72, Gracechurch Street, in the City
of London, for the Invention of "IMPROVEMENTS IN EVAPORATING SACCHARING
AND OTHER LIQUIDS OR JUICES." A communication from abroad by J. W.
Sutton, of Brisbane, Queensland.
Sealed the 7th October 1879, and dated the 16th April 1879.
on has for its object improvements in evaporating saccharine and
PROVISIONAL SPECIFICATION left by the said Matthew Gill at the Office
of the Commissioners of Patents on the 16th April 1879.
MATTHEW GILL, of No. 72, Gracechurch Street, in the City of London. "Iм-
PROVEMENTS IN EVAPORATING SACCHARINE AND OTHER LIQUIDS OR JUICES." [A
communication from abroad by J. W. Sutton, of Brisbane, Queensland.]
This Invention has for its object improvements in evaporating saccharine and
other liquids or juices.
The methods chiefly in use for the evaporation of saccharine liquids or juices are
as follows:-
1. Open fire.
2. Steam jacketted pans.
3. Steam coil pans.
4. Steam jacketted and coil pans.
The inventor for the purposes of rapid evaporation uses any form of pan, but
preferably the ordinary flat pans, either square or circular, heated in one of the
manners specified, but by preference steam, and in addition applies a pipe or pipes,
plate or plates, perforated and placed below the surface of the liquids or juices.
Through these cold or heated, dry or moist air is blown or forced in thin streams or
currents by an air pump, fan, or other suitable means.
The currents of air ascending through the liquids or juices cause violent agitation
or ebullition, which increases the evaporation.
The apparatus is represented in the annexed Drawing.
The pan consists of an ordinary shallow metal one A as used for open boiling,
heated by means of a steam coil B either with exhaust steam or direct, or both as
required. Beneath the steam coil are fixed a series of perforated pipes C fixed
through the end of the pan and communicating with an air chamber D which is
Price Gdl
4. Steam jacketted and coil pans.
The inventor for the purposes of rapid evaporation uses any form of pan, but
preferably the ordinary flat pans, either square or circular, heated in one of the
manners specified, but by preference steam, and in addition applies a pipe or pipes,
plate or plates, perforated and placed below the surface of the liquids or juices.
Through these cold or heated, dry or moist air is blown or forced in thin streams or
currents by an air pump, fan, or other suitable means.
The currents of air ascending through the liquids or juices cause violent agitation
or ebullition, which increases the evaporation.
The apparatus is represented in the annexed Drawing.
The pan consists of an ordinary shallow metal one A as used for open boiling,
heated by means of a steam coil B either with exhaust steam or direct, or both as
required. Beneath the steam coil are fixed a series of perforated pipes C fixed
through the end of the pan and communicating with an air chamber D which is
[Price 6d1

page_text: connected by a pipe E with a pressure blower F driven by a belt from the line
shaft G, or by preference from a small independent engine.
The steam pipes or coil B can be raised or lowered for cleaning. The perforated
air pipes C can be unscrewed and easily removed if required.
In the bottom of the pan A (which is concave) is fixed a valve H for drawing off
the liquor or saccharine juice.
In the air chamber D is fixed a cock or valve I which answers for two purposes,
viz., to relieve the air blast and to draw off any liquor or juice which may find its
way there through the perforations when the blast is off. One or more pans can be
supplied with air from the same blower, the pressure of air being regulated by the
speed of the blower.
The evaporation is effected at a low temperature (as in the case of the vacuum
pan) varying with the density of the atmospheric blast.
The Drawing shows an arrangement for the supply of air at the temperature of
the atmosphere, but when desired the air can be heated to the required temperature
by means of pipes in the boiler flues, chimney, or other simple means.
The air may
also be dried.
Very small power is required to drive the pressure blower in comparison with
amount of extra evaporation.

page_text: 2. Dream Jacketed and con pans.
The inventor for the purposes of rapid evaporation uses any forin of pan, but
preferably the ordinary flat pans, either square or circular, heated in one of the
manners specified, but by preference steam, and in addition applies a pipe or pipes,
plate or plates perforated and placed below the surface of the liquids or juices.
Through these cold or heated, dry or moist air is blown or forced in thin streams or
currents by an air pump, fan, or other suitable means.
The currents of air ascending through the liquids or juices cause violent agitation
or ebullition, which increases the evaporation.
The apparatus is represented in the annexed Drawings.
The pan consists of an ordinary shallow metal one A as used for open boiling, heated
by means of a steam coil B either with exhaust steam, or direct, or both as required.
Beneath the steam coil are fixed a series of perforated pipes C fixed through the
end of the pan and communicating with an air chamber D which is connected by a
pipe E with a pressure blower F driven by a belt from the line shaft G, or by
preference from a small independent engine.
The steam pipes or coil B can be raised or lowered for cleaning.
air pipes C can be unscrewed and easily removed if required.
The perforated
In the bottom of the pan A (which is concave) is fixed a valve H for drawing
off the liquor or saccharine juice.
In the air chamber D is fixed a cock or valve I which answers for two purposes,
viz., to relieve the air blast and to draw off any liquor or juice which may find its
way there through the perforations when the blast is off.
One or more pans can be supplied with air from the same blower, the pressure
of air being regulated by the speed of the blower.
The evaporation is effected at a low temperature (as in the case of the vacuum
pan) varying with the density of the atmospheric blast.
The Drawing shows an arrangement for the supply of air at the temperature of
the atmosphere, but when desired the air can be heated to the required temperature
by means of pipes in the boiler flues, chimney, or by other simple means. The air
may also be dried.
Very small power is required to drive the pressure blower in comparison with
amount of extra evaporation.
Having now described the nature of the said Invention, and in what manner the
same is to be performed, I would have it understood that what I claim and desire
to protect by Letters Patent is the blowing or forcing cold or heated, moist or dry
air in currents below the surface of heated liquids or juices for the purposes of rapid
evaporation; and I also declare that the same may be advantageously applied to
other purposes or processes dependent upon the disengagement of aqueous vapours
during the evaporation, concentration, and crystallization of various substances

page_text: when held in solution, as in the manufacture of sugar, salt, glue, spirits, &c.; and
I further declare that my Invention consists in the application of currents of air,
heated or otherwise, when forced or made to pass through the body of any fluids
for the purpose of evaporation.
In witness whereof, I, the said Matthew Gill, have hereunto set my hand and
seal, this Eleventh day of October, in the year of our Lord One thousand
eight hundred and seventy nine.
MATTHEW GILL. (LS.)