The Daily bulletin. [volume] (Honolulu [Hawaii]) 1882-1895, 1895-02-06

to describe the perfection OF its con-
struction and OF its execution OF
what is required OF it. The planters
used to talk few years ago about
the effectiveness OF double crushing,
then that OF treating the half-crush-
ed cane with hot water or satura.
ton. Here is a triple crushing ar
rangement combined with satura-
tiou, aud under pre-. sure that APP
pears almost fabulous. II is a nine
roller miller, three rollers in series,
the rollers 3iin.x7Sin. of chilled steel.
The pressure is beautifully regulated
by the Fisher patent hydraulic de.
vice. II careless workman should
drop a monkey wrench or ham
mer between these rollers, it would
hardly make mark on them. 1t
would only be so much the worse
for the monkey wrench or the ham
mer; as George Stephenson said to
the parliamentary committee, when
one OF its members asked what
would happen il cow got in the
way Of his railway engine,-"So
much the worse for the COO" This
hydraulic device reduces the risk
OF breaking the roller pinions-a
fruitful source OF expense in Hawai-
ian sugar mills-besides equalizing
the pressure to dot. The amount
of pressure that this mill can sustain
is simply prodigious. When first
seen running by the pressmen the
pressure on the first series was 275
tons, on the second 2S5 tons, on the
third 295 tons. Mr.. O'Neil said,
however, that the mill could sustain
a pressure OF $50 tons and still leave
a safety factor Of four tons. He in
timated also that he was going to
pile on 800 tons before he left, and
he more than kept his promise the
same day. While the press contin-
gent was being shown over the plan
tation, Mr.. O'Neil put a pressure Of
26l, $50 and 303 tons, respectively, on
the three series OF triple rollers.
The result in extraction " Juice was
a great increase. Mr.. O'Neil had
not, before the party left, completed
taking off the cards" OF the engine
to ascertain its horse power. Mr..
Tenney, however, who saw him later
than the pressmen, says it is safe to
say the engine develops 200 horse
power.
An extraction OF 80 percent had
been obtained under the moderate
pressure with which the mill had
been started. The 300 tons pressure
was expected to yield an extraction
of 81 percent. Saturation is employ
ed at the second set of rollers, hot
water being applied, in the proper
ton OF about 8 percent, to the volume
OF juice, through a perforated pipe
set parallel to the rollers. To give
an idea OF what the new plant gives
promise of doing, it is enough to tell
what it is already performing, COM
pared with the work done by the
now discarded diffusion process. 1t
is turning out Is tons OF sugar a
day, against an average OF 80 tons
last year by diffusion. What the old
mill took more than 200 days to per
form, the new one is able to do in
100 days. The economy in labor aud
wear aud tear from this saving OF
time alone will be we'll understood
by sugar men, but this is only part
OF the saving effected by the change
at Eva. In the matter OF fuel there
is heavy reduction in expense.
The maceration process now install
cd requires nothing but the "trash"
to be burned for generating steam.
That material from the diffusion
process was too wet to be burned di-
rectly without drying, besides being
otherwise inferior for the generating
of steam. There is a saving OF 5000
tons of coal a year to the company
from the utilization OF the trash for
fuel. In the process under descrip-
ton the trash is carried Immediately
from the last series of rollers to the
furnaces, into which it is served by
automatic feeders. There are four
Of these feeders Of the type designed
by A. Young, of the Honolulu Iron
Works, which are driven by one en-
CINE, and one OF the type designed
by John Dyer, lately local agent OF
the Risdon Iron Works OF San Fran
cisco. 1t will be remembered that
there was hard fought legal con-
test over these feeders, decided in
favor OF Mr.. Young when he was
sued by the Risdon Iron Works for
Infringement OF patent rights.
Before dismissing the grinding
operation mention is to be made oil
another innovation made in the
working of the new plant at Eva
In other mills on the islands the
faad;po Ia dona nj tho rata ~ II foo,