Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1916-10-10
Mill ENGINEERS v ARMLY DISCUSS
THEIR PROBLEMS ON SECOND DAY

came from Mr.. Ramsay OF Cation,
Neill & Company .
This swing" said Ramsay. would
take up the bent in the blade and thus
prolong the life of the knife. =
Hind said that he believed that with
the knives closer together there was
less chance O. breakage ..
The advent OF the Mes4chaert
greece is bringing about changes II
several aspects OF milling. s mn en-.
gineers advocate deep groove
throughout the three rollers OF the
first mill Others are in favor OF
smooth rolls. whilst all are reyerting
! to smooth rollers with Messehaert
grooves in the other mills of the train.
Favors Smith Rollers
Wyllie at Onomea favors the smooth
rollers while McCubbin said he al
ways used seven grooves to the inch
and finds them most satisfactory. and
others advocated either smooth rollers
or various forms or grooves.
DR.. Norris of the planters expert
ment station then reverted TO the
scrapers again, introducing meth.
cd of stamping out scrapers which
was invented by Winter in which he
used a hydraulic press and a model
was passed around. .=@ -. a
Other designs of scrapers were
then brought up. but Ramsay declared
that all the mills should have a stand
ard scraper in which case they could
be made by the million and therefore
much cheaper 8. .....4 s..
McCubbin Draws Design ~.
McCubbin drew a design of scrap
er which he used, showing how he
had fastened piece of steel in the
form of a lathe below the bagasse
scraper which thoroughly carried off
all trash. =. .,.s.# III. II.
In the pitch Of the grooves, pitches
from two to four inches were advo-
Gated. ri ii.
In modern milling, juice straining
has become an important item and DR..
Norris said that mixed juices should
be screened much more thoroughly
than has been the case as it results
in better clarified juice. He said
that 200 mesh screen was far better
than a $50 screen. 3D..
Days Session Ends
The last topic discussed WAS shred
0CIS "HrI1CI lACy tnSlTdSCu SlO
extraction J. a. Gibbs of the Homo
lulu plantation said that while he did
not find the addition of a shredder in
creased the extraction 1t allowed
large amount of sugar cane tc be run
through. Truscott, however, believed
that the use of shredder did show a
gain in extraction and what was even
more important a decrease in the
wear on the machinery
When asked what horse power was
necessary to grind 4 ton of cane.
Gibbs said that at his mill he found
fraction over h. p. was needed and
r. h. p. wali the shredder - ~ II
MeCubbin reported that he never
used over $50 h. p. 70 grind ~ tons
an hour and often less. a. Gartley
believed that more power was used
than necessary, bur that the individual /
engineers must figure out the proper
amount for their own mills.
Gartley also proposed that as the
opening of the sareoders was only Is
inches, the cane Sfculd be cut up
beforehand by knives on machine
in front of the shredder.
crystallizers and centrifugaIs
hOSJ Vi Tie sugar HOuScS III the Ild- (
waiian Islands have replaced the old I
style coolers on wheels with U-shaped
crystallizers equipped with starring |
devices. Very few, however, are fit
ted with steam or water jackets, as
the temperature here is so uniform |
throughout the year that means for
controlling the temperature in the
crystallizers are unnecessary
In many sugar houses, however, |
where the equipment Of still coolers
is good and the arrangement Is salts
factory their use is continued, but |
the saving in labor and the cleanliness
which accompanies a crystallizer in
stallation makes the change from cool |
er cars to crystallizers always a well |
come one.
Many Sizes Used
"Crystallizers are in use in all sizes. !
depending upon the capacity of the
pans, it being the aim in most sugar |
houses to put no more than one
strike" in crystaIlizer at a time in
order to observe the changes which |
take place il the massecuite so as TO
alter pan methods at will, which OBJ
seryations could not be made IL
strikes we're dropped in crystallizers
without regard to a maintenance of