IMPROVEMENTS IN THE MODE OR METHOD OF TREATING CANE- JUICE, SACCHARINE, AND OTHER SOLUTIONS OR LIQUIDS, FOR EVAPORATING AND CONCENTRATING PURPOSES, AND IN APPARATUS FOR THE SAME.
Year: 1880

page_text: LETTERS PATENT to Francis George Harvey, of Hillside, Vere, Jamaica, for an
Invention of "IMPROVEMENTS IN THE MODE OR METHOD OF TREATING CANE-
JUICE, SACCHARINE, AND OTHER SOLUTIONS OR LIQUIDS, FOR EVAPORATING
AND CONCENTRATING PURPOSES, AND IN APPARATUS FOR THE SAME.'
"
PROVISIONAL SPECIFICATION left by the said Francis George Harvey at
the Office of the Commissioners of Patents on the 13th March 1880.
$6
FRANCIS GEORGE HARVEY, of Hillside, Vere, Jamaica. IMPROVEMENTS IN THE
MODE OR METHOD OF TREATING CANE-JUICE, SACCHARINE, AND OTHER SOLUTIONS
OR LIQUIDS, FOR EVAPORATING AND CONCENTRATING PURPOSES, AND IN APPARATUS
FOR THE SAME."
My Invention has for its object the evaporation and concentration of cane-juice,
saccharine, and other solutions or liquids, in such a manner as to avoid the liability
to the burning and irregular heating incidental to the ordinary process or processes;
and my Invention consists in producing the evaporation and concentration of the
solutions by the application of steam, by means of the apparatus hereinafter
described. For this purpose the apparatus consists of a boiler with which is com-
bined a thin jacket of steel, copper, or other suitable metal, the upper part of such
jacket being made in the form of a shallow trough or tray, and having a slight
declination towards its exit end. The steam jacket communicates with the boiler
by a pipe or pipes, through which steam is admitted from the boiler, and which pipe
or pipes is or are furnished with cocks or taps for regulating the heat of the trough
or tray as required.
The cane juice or other liquor requiring to be evaporated is introduced at the
higher end of the inclined trough or tray, down or along which it flows in a thin
stream over the bottom of the same, and being caused to pass between small steam
tubes placed so as to leave corrugated spaces for the liquor to pass along, by which
means it is slightly impeded in its course, and caused to travel slowly down between
the tubes. At the entrance to the inclined trough or tray is fitted a regulator
consisting of a steam tube connected with the said small tubes, such steam tube
being adapted to regulate the flow of liquor on to the inclined trough or tray by

page_text: being set at the required distance from the upper surface of the trough or tray. On
reaching the end of the trough or tray the cane juice or other liquor flows directly
on to the boiler down into a trough or gutter placed at each side of the same, and
running from end to end thereof. The scum or dirt which is brought to the surface
of the liquor by the boiling is or can be hence removed by means of scoops or
otherwise, as required.
The liquor continuing to run from the inclined trough or tray down into the
gutter at each side of the boiler, the said gutter is caused to overflow, and the cane
juice or other liquor will flow on down the side of the boiler into a receiver suitably
placed, where the liquor may be drawn off by a pipe or pipes as usual, or it may be
returned to the inclined trough or tray, and the process repeated.
By means of the apparatus above described the risk of injuring the cane juice or
other liquor by the too great heat of a furnace or irregularity of temperature is
obviated, and a regular and even temperature maintained.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Francis George Harvey in the Great Seal Patent Office on the 13th
September 1880.
FRANCIS GEORGE HARVEY, of Hillside, Vere, Jamaica. " IMPROVEMENTS IN THE
MODE OR METHOD OF TREATING CANE-JUICE, SACCHARINE, AND OTHER SOLUTIONS
OR LIQUIDS, FOR EVAPORATING AND CONCENTRATING PURPOSES, AND IN APPARATUS
FOR THE SAME."
My Invention of "Improvements in the Mode or Method of Treating Cane-juice,
Saccharine, and other Solutions or Liquids for Evaporating and Concentrating
Purposes, and in Apparatus for the same," has for its object the evaporation and
concentration of cane-juice, saccharine, and other solutions or liquids, in such a
manner as to avoid the liability to burning and irregular heating incidental to the
ordinary process or processes.
And my Invention consists in producing the evaporation and concentration of
the solutions by the application of steam by means of the apparatus hereinafter
described.
For this purpose the apparatus consists of a boiler with which is combined a thin
jacket of steel, copper, or other suitable metal, the upper part of such jacket being
made in the form of a shallow trough or tray, and having a slight declination
towards its exit end. The steam jacket communicates with the boiler by a pipe or
pipes, through which steam is admitted from the boiler, and which pipe or pipes is
or are furnished with cocks or taps for regulating the heat of the trough or tray as
required.
The cane juice or other liquor requiring to be evaporated is introduced at the
higher end of the inclined trough or tray, down or along which it flows in a thin
stream over the bottom of the same, being caused to pass between small steam tubes

page_text: Fig. 1 is a longitudinal section of a boiler with a steam chest and an inclined
trough or tray applied thereto, and Fig. 2 is a plan or horizontal view of the same;
Fig. 3 is a transverse section of a boiler with a horizontal trough or tray and steam
chest applied thereto, with the means of tilting the trough or tray; and Fig. 4 is a
longitudinal view of the boiler, shewing a series of troughs or trays and steam
chests arranged along the top of the boiler.
In Figures 1 and 2, A is the boiler; B, the steam chest over it, supplied with
steam by means of suitable pipes; C is the inclined tray or trough fitted over the
steam chest B, to each end of which trough or tray is fitted a steam pipe D receiving
steam from the chest B. Between the pipes D, D*, are arranged a series of smaller
pipes E, E, forming a communication between the pipes D and D*, and presenting
a corrugated or interrupted course for the passage of the cane juice or liquor along
the surface of the trough or tray in the manner shewn in Fig. 2.
The steam pipe D at the upper end of the trough or tray C acts as a regulator of
the flow of liquor on to the same, by its being set to any required distance above
the surface of the trough or tray, thereby leaving the required space between the
pipe and the trough or tray for the passage of the liquor. This pipe is adjusted to
Steam
its required elevation by means of a screw or other suitable adjusting gear.
is supplied to the pipe D* through a hollow trunnion joint formed at the end of
the steam chest B, in which steam space or passage is fitted a cock or regulator
which can be worked-from-outside.-
The cane juice or other liquor to be evaporated (after being boiled in the usual-
way if required) is introduced at the higher end of the trough or tray C down or
along which it flows in a thin stream in the spaces between the several small

page_text: pipes E, E, in which spaces, owing to the particular form of the pipes, the course of
the juice or liquor is slightly impeded, thereby exposing it to a more prolonged
action of heat from the steam, and producing its more complete evaporation.
In Figures 3 and C, C, are horizontal troughs or trays mounted on trunnions
or pivots at F; F, which are or may be hollow in order to form passages for steam
from the boiler into the steam chests G, G, under the troughs or trays C, C. These
troughs or trays extend on each side of the boiler, as shewn in Fig. 3, and they
can be tilted as required from a platform at H, after the juice or liquor contained
in them has been acted upon by the heat from the steam in the chests G, G, and
thereby evaporated as required.
Having thus described the nature of the said Invention, and in what manner the
saine is to be performed, I hereby declare that what I claim as of my Invention
is,-
First. The evaporation and concentration of cane juice or other liquor by means
of the heat of steam applied in the manner herein before described.
And, Secondly. The use of steam pipes or tubes formed and arranged so as to
prolong the action of the heat on the juice or liquor in its course along the trough
or tray, in the manner described.
In witness whereof, I, the said Francis George Harvey, have hereunto set my
hand and seal, the Thirteenth day of September, in the year of our Lord
One thousand eight hundred and eighty.
Witness,
FRANK REDMAN,
8, Quality Court,
Chancery Lane.
FRANCIS Q. HARVEY. (L.S.)