A COMBINED ELIMINATOR AND FILTER FOR TREATING SUGAR-CANE JUICE AND OTHER LIQUIDS
Year: 1885

page_text: and other Liquids,
I, ALEXANDER CRUM EWING of 62 Bath Street, Glasgow in the County of
Lanark, North Britain, Sugar Merchant do hereby declare the nature of the said
invention for A COMBINED ELIMINATOR AND FILTER FOR TREATING SUGAR-CANE
JUICE AND OTHER LIQUIDS to be as follows:-
This Invention, which relates to a combined eliminator and filter for treating
sugar-cane juice and other liquids has for its object the removal of much of the
tedium hitherto attendant upon such processes.
In carrying this Invention into practice, a vessel is constructed with two parts
or chambers one for the boiling and the other for the filtration of the juice or
liquid. The boiling of the liquid is effected by the passage of steam through
a coil or its equivalent preferably located nearer to one than the other end of the
boiling chamber so that the liquid is caused to circulate within the said chamber.
When so brought to a state of ebullition the clear liquid at the bottom of the
boiling chamber is drawn off through a pipe and passed direct into the lower part
of the filter chamber, that is to say, without being acted upon by the filter medium,
while the skim or foam which contains much dirt and other foreign matter, floate
on the surface of such clear liquid and passes, on its way to the filter, over the
upper edge of that partition plate which divides the boiling from the filter chamber.
The clear liquid resulting from the filtration of the foam, falls into the lower part
of the filter chamber where it mixes with that clear liquid which has passed direct
from the boiling chamber, and where the liquid is in a fitting condition to be
conducted to the vacuum pan.
Any suitable construction of filter may be used, such for example as a bag filter,
and access may be had to the interior of the filter chamber by means of doors or
their equivalent, so that when necessary the filter bags or other medium employed
may be readily removed and cleansed.
If found necessary to pass the last of the liquid remaining in the boiler chamber
through the filter, thus may be effected by drawing the liquor first into a closed
vessel and then forcing it by steam pressure up through a pipe to the top of the
filter, or this may be effected in any other convenient manner.
Dated this eleventh day of November 1885
J. H. JOHNSON, DAY & JOHNSON,
Petitioner's Agents.

page_text: and other Liquids.
I, ALEXANDER CRUM EWING of 62 Bath Street, Glasgow, in the County of
Lanark, North Britain, Sugar Merchant do hereby declare the nature of my
invention for A COMBINED ELIMINATOR AND FILTER FOR TREATING SUGAR-CANE
JUICE AND OTHER LIQUIDS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
My Invention, which relates to a combined eliminator and filter for treating
sugar-cane juice and other liquids, has for its object the removal of much of the
tedium hitherto attendant upon such processes.
In carrying my Invention into practice, a vessel is constructed with two parts
or chambers one for the boiling and the other for the filtration of the juice or
liquid. The boiling of the liquid is effected by the passage of steam through
a coil or its equivalent preferably located nearer to one than the other end of the
boiling chamber so that the liquid is caused to circulate within the said chamber.
When so brought to a state of ebullition the clear liquid at the bottom of the
boiling chamber is drawn off through a pipe and passed direct into the lower part
of the filter chamber, that is to say, without being acted upon by the filter medium,
while the skim or foam which contains much dirt and other foreign matter, floats
on the surface of such clear liquid and passes on its way to the filter, over the
upper edge of that partition plate which divides the boiling from the filter chamber.
The clear liquid resulting from the filtration of the foam, falls into the lower part
of the filter chamber where it mixes with that clear liquid which has passed direct
from the boiling chamber, and where the liquid is in a fitting condition to be
conducted to the vacuum pan.
Any suitable construction of filter may be used, such for example as a bag filter,
and access may be had to the interior of the filter chamber by means of doors or
their equivalent, so that when necessary the filter bags or other medium employed
may be readily removed and cleansed.
If found necessary to pass the last of the liquid remaining in the boiling chamber
through the filter, this may be effected by drawing the liquor first into a closed
vessel and then forcing it, by steam pressure, up through a pipe to the top of the
filter; or this may be effected in any other convenient manner.
In order that my Invention may be properly understood and readily carried into
effect, I will now proceed to describe the drawings hereunto annexed.
Figure 1, is a plan of an arrangement of apparatus constructed according to and
constituting my present Invention.
Figures 2 and 3 are respectively a vertical section and an end elevation of the
same.
The apparatus as represented upon the annexed drawings is constructed of sheet
or plate iron or its equivalent and with the two parts or chambers A and B. In
the chamber A, the sugar-cane juice or other liquid to be subsequently treated in
the apparatus, is brought to a state of ebullition by steam introduced through the
pipe a, and passing through the coil b. This coil b, is located nearer to the plate c,
than to the plate d, that is to say, nearer to one than the other end of the
chamber A, these plates c, and d, constituting the said ends thereof; by this
arrangement the liquid is caused to circulate within the chamber A.

page_text: The filter chamber B, is divided by the horizontal plate e, into an upper part f
and a lower part g. The plate e, is perforated with the holes h, (Figure 1) and
below these holes is supported the filter medium by which the thick or impure
liquid is cleansed. The filter medium employed may be one of many descriptions
and, as an example, upon the annexed drawings I have represented filter bags i,
as the means employed for intercepting the passage of the dirt and other foreign
matter through the apparatus. These bags i, are suspended in any desired manner
from the plate e, one below each orifice h, and when found necessary for cleansing
or other purposes, the said bags i, may be removed, access thereto being had
through the doors j. The pipe k, which is provided with the valve l, of any
suitable construction connects the chamber A, with the lower part g, of the filter
chamber B.
When, by the passage of steam through the coil b, as hereinbefore described, the
liquid in the chamber A, is brought to a state of ebullition, the skim or foam,
which contains much dirt and other foreign matter, floats on the surface of the
clear liquid and passes over the upper edge of the plate d, into the upper part f, of
the filter chamber B. The clear liquid from the chamber A, passes down the
pipe k, to the lower part g, of the filter chamber B, and there mixes with the clear
liquid resulting from the filtration of the skim or foam. From the lower part g, of
the said filter chamber, the clear liquid may be conducted through the pipe m,
directly to the vacuum pan.
Should it be deemed necessary to pass the last of the liquid remaining in the
boiling chamber A, through the filter i, this may be effected in many ways. As an
example, I have shewn at Figure 2, of the annexed drawings a method wherein it
is effected by means of the vessel n, into which the said liquid is first drawn off
by opening the valve o. When the vessel n, is fully charged, the valve o, is
closed and the steam valve p, is opened. The liquid is then, by the pressure of the
steam passing in through the pipe q, forced up through the pipe 7, to the upper
part f, of the filter chamber, and in passing through the filter bags i, the impurities
contained in the said liquid are intercepted.
.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is
•
First. A combined eliminator and filter for treating sugar-cane juice and other
liquids, consisting of the chambers A and B, in the former of which the said juice
or liquid is brought to a state of ebullition by steam passing through the coil b,
the skim or foam resulting from such ebullition flowing over the plate d, into the
upper part f, of the chamber B, and in its passage through the filter bags i, or other
filter medium employed to the lower part g, of such chamber B, being cleansed of
its impurities all substantially as and operating in the manner hereinbefore set forth
with reference to the annexed drawings.
Second. The combination of the apparatus claimed in the preceding claiming
clause with the vessel n, valves o, and p, and pipes q, and r, or the mechanical
equivalents thereof all substantially as and for the purposes herein before set forth
with reference to Figure 2 of the annexed drawings.
ונית
11
1000
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