The Jasper weekly courier. [volume] (Jasper, Ind.) 1858-1922, 1863-05-09
The Nanufactare Of Sugar from
Sorghum.

onestion Il the best mode Of manuiac-
turing. An iron mill, with at least
three rollers, should DO used, as the
wooden mills (which answered well
for orr primitive experlments) lose
onc-half OF the juice. The cane
should be stripped, topped, and, Tor
very nice experiments, should De cut
in the middle, the butts pressed ana
.yaporatcd by themselves for sug I,
aud the tops Tor strip. In my expsri-
mcnts IN 1851 | used the whole stalk
with complete success.
Ofthe most vital Importance is the
mode Of delaction anu evaporation. III
boil the Juice in the ordinary kettles
or mans il to waste both your time and
your crop, as has been fully demon
stratcd by the thousands ofexperlmen'sl
heretofore made.
DELEGATION andevaporation must bel
combined in one action; that Is, dur
inc evaporation there must be a con
slant defecation. The albuminous
matter will not coagulate except upon
the application Of an active heat, ana
~ this matter and other impurities
rising in the scum cannot rest upon a
boiling surface without being again
plunged BY the currents into the juice,
and, finally, SO Incorporated with the
strip as to prevent granulatlon, i Is
clear that the evaporation must afford
a means Of retiring this scum from the
boiling surface as rapidly as il arises.
Hence there must be cool surface
within the pan outside the line OF ebnl-
lition. where it may rest. This cooling
surface is indispensable, and no one
has succeeded in making sorgho sugar
who did not use it. | therefore ma lea
pan with the sides projecting over ths
surface several inches.
In nv first experiments used Inns
in delegation, but finding that simpl.
active heat was the best defecator,
abandoned it. To secure the best ct
feet in defeating by heat, and also tn.
most rapid evaporation possible, which
is another great requisite to success
the Juice should be boiled in shallow
bodies. In doing 50 found grea
danger Of burning, and therefore, IN
troduced q running stream OF juice in
to my pan; but as the scum collecting
Ct the cool sides Of my pan woul'
pass down the whole length Of It, an'
minele with the strip as it flowed on
into my coolers, ! constructed ledge
starting out from each side alternately
and reaching nearly across the pan
thus giving me zigzag current iron
one end to the other. These ledge
held the scum at the cool sides unit
removed by the skinner. They ais
accomplished another important an
very unexpected result, which vii
endeavor to explain:
Different degrees Of heat cause oil
ferent kinds of impurities to rise :
the surface. AT the front end OF ~
pan one kind came up, while furthe
down, being hotter, another kind, an
90 on. until about half way down m
pan found all the green impuritie
removed, and nothing left but Ia
sscane gum, as it is frequently termed
this is precipitated, and forms whit
coat upon the pan for the space
about three or four channels. TIL
coat must be removed from the pa
while soft with stiff broom, as i b
comes almost as hard as steel, and
then difficult to remove. After tn
SCUM Is removed the strip is free
crystallize, aud to this principally
attribute my success.
Another thing found essential
The strip must be hurried to the poi
Of capitalization as rapidly as poss
bic. and when it. attained be instant
removed from the evaporation. TIL
point is about 22So Fahrenheit, al
testing the strip BY weight i shou
weigh from IL to II lbs. to the gallo
Eleven lbs. does very well, but crysta
lization Is rather slow. The bubbl
afford q good index Of the prop
stage, the same signs used in boilir
maple being applicableto sorghum.
In order to cause my running strea
always to reach the outlet Of the p'
Just at the point Of capitalization,
placed il upon rockers, and could tn
hasten or retard the stream as my Il
might require. ! am thus enabled
have = constant stream Of juice flo
ing into the pan, and stream Of sir
-. cocatonflv from II. This dew