IMPROVEMENTS IN EVAPORATORS FOR CONCENTRATING SACCHARINE FLUIDS
Year: 1867

page_text: LETTERS PATENT to William Edmond de Bourran, of No. 8, Rue Hustin,
in the City of Bordeaux, and Empire of France, for the Invention of
"IMPROVEMENTS IN EVAPORATORS FOR CONCENTRATING SACCHARINE FLUIDS."
Sealed the 4th February 1868, and dated the 28th October 1867.
PROVISIONAL SPECIFICATION left by the said William Edmond de
Bourran at the Office of the Commissioners of Patents, with his
Petition, on the 28th October 1867.
I, WILLIAM EDMOND DE BOURRAN, of No. 8, Rue Hustin, in the City of
Bordeaux, and Empire of France, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN EVAPORATORS FOR CONCENTRATING SACCHARINE
FLUIDS," to be as follows:-
This Invention consists of a rotating apparatus for concentrating saccharine
fluids by means of steam, some of the principal advantages of which are as
follows:-Firstly, as steam is the only heat employed there is no risk of
burning or discoloration; secondly, economy, as the waste steam from the
cane mill will suffice for the purpose; thirdly, quickness of evaporation owing
to the constant rotation; and, fourthly, saving of labor,. as when the apparatus
is once set in motion it requires no further attention, and if left a sufficient
length of time will evaporate the syrup to dryness..
The apparatus consists mainly of a basin or open vessel to receive the
syrup and a rotating evaporator composed of four cupolas (forming two hollow
dome-shaped ends) connected together by about twenty-eight tubes near the

page_text: circumference, six intermediate tubes of the same diameter, and a master tube
of a larger size in the centre at each extremity of the tubes (which lie hori-
zontally). Two of the cupolas form a hollow dome-shaped chamber containing
two funnels for collecting the water of condensation and a distributor of the
steam as it enters through the hollow axis, all made of copper. A ring of
copper surrounding the central tube is provided with four (or more) arms con-
nected to a circle of about the diameter of the evaporator, and being placed
midway between the two ends serves to give solidity to the apparatus. The
basin or open vessel is supported on suitable wooden or metal frames, one at
each end, and also one under the centre of the same. The end framings also
support in suitable bearings the hollow axis, through which the steam passes,
and the necessary spur or other gearing for giving rotatory motion to the
evaporator.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Edmond. de Bourran in the Great Seal Patent
Office on the 21st April 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDMOND DE BOURRAN, of No. 8, Rue Hustin, in the City of Bordeaux, and
Empire of France, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of October, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirty-first year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Edmond de Bourran, Her special licence that I, the said
William Edmond de Bourran, my executors, administrators, and assigns, or
such others as I, the said William Edmond de Bourran, my executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend, within
the United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN EVAPORATORS FOR
CONCENTRATING SACCHARINE FLUIDS," upon the condition (amongst others)
that I, the said William Edmond de Bourran, my executors or adminis-
trators, by an instrument in writing, under my, or their, or one of their
hands and seals, should particularly describe and ascertain the nature of the

page_text: said Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Edmond de Bourran, do
hereby declare the nature of my 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 writing, and on reference to the accompanying
Drawings, that is to say:-
This Invention consists of a rotating apparatus for concentrating saccharine
fluids by means of steam, some of the principal advantages of which are as
follows Firstly, as steam is the only heat employed there is no risk of burning
or discoloration; secondly, economy, as the waste steam from the cane mill will
suffice for the purpose; thirdly, quickness of evaporation owing to the constant
rotation; and, fourthly, saving of labor, as when the apparatus in once set in
motion it requires no further attention, and if left a sufficient length of time
will evaporate the syrup to dryness.
The apparatus consists mainly of a basin or open vessel to receive the
syrup and a rotating evaporator composed of four cupolas (forming two hollow
dome-shaped ends) connected together by about twenty-eight tubes near the
circumference, six intermediate tubes of the same diameter and a master
tube of a large size in the centre. At each extremity of the tubes (which lie
horizontally) two of the cupolas form a hollow dome-shaped chamber con-
taining two funnels for collecting the water of condensation, and in one is a
distributor of the steam as it enters through the hollow axis, all being made
of copper. A ring of copper surrounding the central tube is provided with
four (or more) arms connected to a circle of about the diameter of the
evaporator, and being placed midway between the two ends serves to give
solidity to the apparatus. The basin or open vessel is supported on suitable
wooden or metal frames, one at each end, and also one under the centre of
the same.
The end framings also support in suitable bearings the hollow
axes, through which the steam passes, and the necessary spur or other gearing
for giving rotary motion to the evaporator.
Such being the nature and object of my said Invention for "Improve-
ments in Evaporators for Concentrating Saccharine Fluids," I will now
describe more in detail the manner in which the same is to be or may be
performed or carried into practical effect; and in order that the same may
be distinctly understood I have annexed hereunto a Sheet of Drawings,
illustrative thereof, and have marked the same with figures and letters of

page_text: reference corresponding with those in the following explanation thereof, that
is' to say:
In the annexed Drawing, Figure 1 represents a side elevation of the
improved evaporator; Figure 2 is a view of the driving end of the same,
and Figure 3 a vertical transverse section taken through about the line 1, 2,
in Figure 1.
A, A, is the open basin or vessel to receive the syrup and in which the
evaporator rotates. The latter consists mainly of two hollow dome-shaped ends
B, B, connected together at the circumference by twenty-eight longitudinal
tubes C, C, six intermediate tubes D, D, of the same diameter, and a master
tube E, E, of a larger size in the centre. Each of the hollow dome-shaped
ends B, B, is provided with two-funnels F, F, for collecting the water of con-
densation, and in one is a distributor of the steam (shown by the dotted lines **
in Figure 1) as it enters through the hollow axis G, G, upon which the
evaporator is mounted and rotates. The whole of the apparatus so far as above
described is formed of copper. A ring or boss H, H, also of copper, surrounding
the central tube E, E, is provided with six arms J, J, connected to a ring or
circle K, K, which being placed midway of the length of the apparatus serves
to support the tubes C, C, and to give greater strength and solidity to the
evaporator. The basin or open vessel A, A, is supported by the frame L, L,
at each end, and by the frame M, M, passing under and supporting the
same about midway of its length. The hollow axes G, G, are supported on
suitable bearings N, N, carried by the frames L, L, and are driven so as to
impart rotary motion to the evaporator by means of the spur gearing O, O,
and driving pullies P, P.
The operation of the apparatus is as follows:-The basin A, A, must be
filled about three-quarters full of the syrup to be evaporated; rotary motion
is then imparted to the evaporator (about 10 or 12 turns per minute) by
means of a belt passing round the driving pulley Pat the same time that
waste or other steam is admitted through the axes G, G, to the interior of the
hollow domes B, B, and tubes C, C, D, D, and E, E. The apparatus
requires no further attention and may be left to evaporate the syrup to dryness
when a bright grainy sugar is the result.
Having now described the nature and object of my said Invention for "Im-
provements in Evaporators for Concentrating Saccharine Fluids," together with
the manner in which the same is to be or may be performed or carried into
practical effect, I would remark in conclusion that I claim as my Invention,
the improved apparatus for such purpose as shown in the annexed Drawings

page_text: and herein-before described, or any mere imitation or modification thereof,
constructed and operating in substantially the same or a similar manner.
In witness whereof, I, the said William Edmond de Bourran, have here-
unto set my hand and seal, this Twenty-eighth day of March, in the
year of our Lord One thousand eight hundred and sixty-eight.