The Hawaiian gazette. [volume] (Honolulu [Oahu, Hawaii]) 1865-1918, 1916-10-13

OF We mil were discussed at much
hsth and i Was generally conceded
that the MeiKecke Knives are great
Improvement over other forms. Gr6ovcs
I'D scrnpers tN'efe also talked in all
their relationships, and then the ques.
tion of whether shrcdders actually In
crease the extraction enough to pay for
Ne additional power required was
touched on, ~ = T .-.- -
sstepdards Again
That brought up the question OF
standards again, and whether anyone
knows exactly how many horsepower
per ton Of cane ground Is used IN the
shredder and mill, When asked what
horsepower was needed, J. a.. Glib, Of
Honolulu plantation said that at his
mill he found fraction over eight
horsepower was needed and twelve
horsepower With the shredder. "a.
Mr., McCubbip reported that he
never used over 100 horsepower TO
grind seventy eight tons an hour, and
often less, A. Gartley believed that
ignore power was used than necessary,
hut TINT the individual engineers must
figure cut the proper amount for their
kown mills. - .t'%. s GE
He also proposed that os the opening
Eof the shredders was only eighteen
ilches, the cane should be cut up be-.
forehand by knives ON a machine In
front Of the shredder s.
He also dwelt on the danger of In,
producing too many units into the mill
train. simplicify of parts Is a great
deaideratum, Anything looking towards
simplifcation Of process is marked
step IN advance. s |l.s4
Anatomical Extras IN. "a &.
j The engineers then went back 70 q.
discussion ef their toes, OF the mill 3
tors, or the. seraRer bar toes, the foes
Apparently being very. important
part Of the mill anatomy. The sugar
mill engineers toes are something
of cast iron and again Of boiIer-plate
iconstrpction. This subject was dis,
cussed by Messrs Renton. simpson,
Scholefeld, Kinney and Wescoatt. =
! The next report taken up was that
son crystallizers and centrifugals by
committee chairman, Georges +. Winter
How best to empty a cryStnlhEer
brought out an almost unanimous opin.
jon that compressed air at pressures up
TO seventy pounds Is more effective and
better in every way than the old.style
| magmrpump. Horace johnson brought
up the question of the deterrent effect
of air bubbles on drying these bubbles
being introduced into the massecuite
where pumps are used. He Thought the
air bubbles not the real trouble. riff
Guilty in satisfr ctoriIy drying he sugars
is more probably due to the gums.
Speed. Volume, Temperature
The speed at which crystallizers
shnnld be turned and whether they
sltHld be run al the time, or only
occasionally, brought out considerable
difference Of opinion, The comparative
crystallizer volume required in relation
to the size Of the pan, md tho r.ght
temperature to maintain were also de.
hated.
Engineers.
Mr.. MeCubbin insisted that the
density, of the massecuit depends on
ITS purity and on no other factor. He
advocated heating the jacket instead
Of running the massecuit into a cold |
crystallizer, but Mr.. Hind thought this
practise unnecessary.
: Centrifugals were next discussed, |
especially as TO the comparative eff |
cheney Of the thirty-inch and forty. |
inch machines, Most of the engineers
favored the thirty-ineh for Tow grades
and the forty.ipch for high grades.
Centrifugal, Standards
A question by Mr., Gartley as to
whether centrifugal, driving shafts
could be direct connected to high speed
engines developed the fact that no mill
in Hawaii. follows this, practise.
Hammering again. on the need of
standards he asked how. many horse
power would be required to operate a
battery Of ten forty-inch machines.
Mr., Winter said so b. D. Then no asked
bow many gallons Of water per minute
would a pump have to deliver to run
ten, machines, and no one knew. He
asked whether 800 gallons per minute
would be enough.
Next Mr., Gartley demanded light on
the number, of machines TO be used in
pne battery, u. s.. Trescott thought
four thirty-ineh centrifugals the proper
unit. Mr.. Gartley thought batteries
Pr ten far better because the centri.
fqgals in action are practically fly
M9seis or accellerators to speed up the
others in starting. Mr.. McCubbin
agreed with him. Mr.. Gartley also in
sisted thpt excess horse, power should
be- provided which IS what actually
'eeprs in a ten machine battery on &C.
sount of the fy-whsel action, l.
Speed TO Bun
Speed Of operation, steel or bronze
Baskets and repidity o., pickup were
briefly. NE. Ebeling favored
! quick start and rapid speed.
tIhe new Paia forty-eight- centri.
'ugals in batteries Of four, each group
With it's $50 h.Ps motor was claimed to
nave many advantages because the
anger machines win do more work in
J shorter TING, I %.Et
On the question of speed Mr.. Hind
aid the standard speed is 10000 linear
'eet per minute at the rim. At Paia
'orty-inch eentrifugals are used for the
ow grades, at 1900 revolutions per
minute. All the Paia machines are run
It higher than STANDARD" speed.
NJ 47- II 4 -S--7--7 t<-----