Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1916-10-10
One. Session is Held Today and
Three General, Subjects
Are Considered

The second day of the mill engi-
| neers' convention was taken up in dis
cussing the report of the committees
on Milling" and Qualification and
! Filtration" The latter. submitted by
| Ernest w Kopke, was read and COM
menting on the matter. r. r Hind
said that the engineers should take
more interest in the boiling house pro-
cesses. "Of course be said, lin the
mills, changes can readily be seen
while in the boiling house changes are
| hardly perceptible. although study
of this subject is just as important,
| and the engineers should work with
the chemists for the Improvement of
this angle Of sugar production.
Milling Is Considered
The paper on Milling" was then
taken up and the first topic discussed
was the cast steel cap with the hydrau-
lie jack incorporated in it, and dis
cussion centered mostly around whe-
Their the hydraulic jacks should be
placed on ton of the mill, as the lat
est machinery is designed, or under
meath.
The opinions On the subject were
about evenly divided. Wyllie said that
at Onomea eight sets had been in
stalled and the results were entirely
satisfactory, and Lewis Renton SAID
tina. a. Eva Ec found that faster work
could be done with the jacks on top.
McCubhin declared that set was put
in at Pioneer. but that he could not
see any advantage for the new system
and would continue to use mills with
the jacks at the bottom. His main
point of objection was that it took
Longer with the jacks on top to change
the feathers, while Lewis Renton said
he found il took less time.
r. r. Hind and j. Meinecke believe
that the jacks should be on top, but
G. F. Winter of Lihue. sides with Nc
Cubbin, and added that the oil ran
down into the Juice and hot boxes also
developed. In making his stand Hind
pointed out that the two king bolts
were eliminated and the adjustment
of the mills was made from above,
making it, as he believed, more rigid.
Hopke said that he found there was
very little difference in extraction be-
tween the two methods, but the top
jack was cleaner and also with the
method of having the rollers closer
together it was becoming necessary
to have the jacks placed the new way.
McCubEin then said that on one
Mill he had used the same caps for
seven years without change and if the
machinery was properly fitted no
trouble would develop. 49,
1t was then suggested that five or
six hydraulic jacks be kept on hand
all the time so that when the feathers
wore out no time would be lost in re-
newing them.
Hind closed the subject by announc-
ing that it would be taken up again
next year.
Steel Bars Debated.
The next topic was steel returner
bars which, according to the report,
are to be fitted in the Onomea hous-
ing, was taken up neztskbut the ma
jority of the members believed that
cast iron was much better. Wescott
said that he had installed the steel
bars but found they were not as good
as the semi-steel bars with which he
replaced them. Metal for scrappers
was also discussed and cast iron there
also seemed to be mostly used. A sug-
gestion that the metal of the scrap
per should be according to the grain
of the rollers was favorably received.
Knives Taken UP
According to the report:
Revolving knives are evidently an
interesting item amongst engineers.
A set was fitted in one of the mills
last season on hubs which were in
clined about Is degrees to the perpen-
dicular to the axis of the shaft, to
break down the long sticks of cane
preparatory to passing it through a
shredder. Several Dreakages result
ed in these knives. New hubs were
fitted which held the knives in the
usual perpendicular position, and the
breakages materially decreased. The
trouble was attributed to the knife
striking a glancing blow on the cane
when the internal stress of the metal
was already high, due to the centrifu'
gal force of the revolving knife. The
idea of remedying this by Ringing the
knives so that on striking slanting
Il IN