Improvements in and relating to Defecators for Sugar Juice and like Liquors.
Year: 1899

page_text: Date of Application, 21st Mar., 1899
Complete Specification Left, 18th Dec., 1899-Accepted, 10th Feb., 1900
PROVISIONAL
SPECIFICATION.
Improvements in and relating to Defecators for Sugar Juice and like
Liquors.
I, ROBERT HARVEY, of the Firm of McOnie, Harvey, & Company, Limited,
Engineers, 224, West Street, in the County of the City of Glasgow, do hereby
declare the nature of this invention to be as follows:-
(Partly his own invention and partly a communication from abroad by F. J.
Scard, of Demerara, West Indies, Chemist.)
This invention has reference to improvements in and relating to defecators for
treating sugar juice and like liquors, and whereby all the defecation is done
in one vessel in a continuous and automatic manner.
According to these improvements the defecating vessel is formed of a trough
like shape, and below it are placed separate steam heating. jackets or chambers,
each fitted with separate steam valves and water traps, and these chambers may
be maintained at different temperatures.
Baffle plates or transverse divisions are fitted at spaced distances apart within
the defecating vessel, preferably projecting down at an angle from above to near
the bottom of vessel, or they may be placed alternately from above and below and
forming practically chambers between the plates and a settling chamber or
vessel is fitted at the end of defecator with baffle plates projecting. from below
and above at spaced distances apart.
The sugar juice either after or before clarification, is led by a pipe into the one
end of defecating vessel and flows along same and past the baffle plates or
divisions in sequence.
A trough shaped plate or a channel is fitted or formed at the end of defecating
vessel at the top level of sugar juice to separate and receive the scum or froth
from the liquor and run it away: and a similar channel is fitted or formed at
the end of settling chamber to receive and draw away the clear juice to the
evaporators and the settling chamber would be formed with an inclined bottom
for the sediment or mud to run into a "well" shaped pocket and be drawn or run
off from same.
In.provements in and relating to Defecators for Sugar Juice and like
Liquors.
I, ROBERT HARVEY, of the Firm of McOnie, Harvey, & Company, Limited,
Engineers, 224, West Street, in the County of the City of Glasgow, do hereby
[Di Q27

page_text: declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement in writing reference being made to the accompanying drawings:-
(Partly his own invention and partly a communication from abroad by F. J.
Scard, of Demerara, West Indies, Chemist.)
This invention has reference to improvements in and relating to defecators
for sugar juice and like liquors, and comprises one vessel with steam heating,
and scum and juice separating chambers whereby all the defecation is done in a
continuous and automatic manner.
And in order that my said invention and the manner of carrving same into
practice may be properly understood I have hereunto appended two sheets of
explanatory drawings in which Figures 1 and 2 represent a longitudinal section
and plan view respectively of a continuous acting defecating vessel as formed
in accordance with my improvements half of the vessel being shown on each
sheet respectively.
Referring to these drawings:-
According to these improvements the defecating vessel A, is formed of a trough
like shape, and below it are placed separate steam heating jacket chambers B.
B, B, each fitted with separate steam valves b, b1, b2 and drain: outlet 63, and
these chambers may be maintained at different temperatures.
Inclined baffle transverse plates C are fitted at spaced distances apart within
the defecating vessel A, projecting down at an angle from above to near the bottom
of vessel, and these are so adjusted at an angle as to cause the scum to rise to
the top, while the juice from which the scum is thus skimmed flows along under-
neath the inclined plates.
The sugar juice either before or after clarification, is led by a pipe D, into
one end of defecating vessel A, and flows along same and past the baffle plates C,
in sequence, the scum portion as described rising to the top.
A trough shaped chamber E, is fitted or formed at the end of defecating vessel A
to separate and receive the scum or froth from the liquor and run it away, said
chamber being fitted with an adjustable plate E¹, to regulate the height of dis-
charge of scum; and a somewhat similar chamber F. is fitted or formed at the
end of settling chamber to receive and draw away the clear iuice to the evapo-
rators and this chamber F. is formed with an inclined end F¹, for the sediment
or mud to be drawn off, at bottom through a valve Fª.
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. The method of defecating sugar juice and like liquors, consisting in
defecating in a continuous and automatic manner within one vessel having scum
and juice separating chambers at end, substantially as set forth.
Second. A defecator for sugar juice and like liquors, comprising a main vessel
with separate steam heating jacketted chambers, and scum and juice separating
chambers, substantially as set forth.
Third. In defecators for sugar juice and like liquors, the combination of main
vessel with adjustable inclined baffle plates at spaced distances apart. steam
jacketted chambers and scum and juice separating chambers, substantially as
set forth.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.