The Hawaiian gazette. [volume] (Honolulu [Oahu, Hawaii]) 1865-1918, 1915-10-29

tIued and reground
The testing of shafts was debaue
W. q. Hall and +. Kopke told what
tests are used in machine shops and
Why. Electro magnets in front o. the
crusher have been tried out at Pnhala
' and discarded. "Thes cane is too
/ thick, and brushes of any iron that
the magnet cRtches,'' Mr.. Wilson stat
/ ed ........ .-s .r
Swing Hammer shreddsrs
The FIVE Searby shredder installa.
tions in. Hawaii were described at
length by w. g. Hall who showed
photographs and sectional drawings.
Renton Hind said that to give an. idea
\ of the work the shredder does, he had
crawled into the, one at Puunenc ard
counted the hammers. There arc six
rows Of eighty-four hammers each, or
504 in ALL The shredder works az
1900. revolutions per minute, r., the
cane in that time receives 907, 200
blows.
The best feature of the shredder 10
that IL detects chains, car links and
other trifes in the cane so that the
mill can be stopped in, time to- take
them ont. w. W. Wescoatt testified on
this point. He said the shredder simp.
~ chews everything breakable 10
| pieces, ~
Rope Stronger Than Chains
| Blocks. and chains were the next
subject discussed. All agreed that
chains that have been subjected to
strain must be annealed, and blocks
frequently inspected. f. Kopke ex-
planned the theory of it. When a
chain is subject to strain the pitch
changes and the links stretch. The
4 sprocket on the contrary remains fixed
Hence the chain tends to ride he
sprocket and troubles follow W. @.
/ Hall said, ga chain is always n
dangerous thing for heavy lifting. -
In all modern machine shops, especially
in marine and gun shops when great
masses of metal must be moved ManIln
rope is always used. "What all the
mills in Hawaii ought to have is an
electric crane with steel cables. Wire
ropes always give warning before, they
| break -
The convention returned to the sub
ject. of shredders and talked patents.
It was brought out that the swing
hammer cannot be patented and that
Searby's invention is protected by a
combination patent" only.
Chemists Abuse Engineers
Qualification from the engineers
standpoint, was the next biect on
the program, and the chemists present
did much to disabuse the engineers Of
the idea that they knew anything at
all about it.
Prof. H. S. Walker of the College of
Hawaii said he knew of no reason why
the juices from the different mills
should be kept separate. Mr.. Duker
told of a laboratory experiment in
which the first and fourth mill juices
were worked separate. Nothing came
of it.
s. s. Peck said H. 8. Trescott 5
theory of the settling of light and
heavy juices happens to be just exact
ly the other way about. R. s. Norris
said the same and added that very
large gains would have to be demon.
strated to cause any change in meth
DDS to be made. In Australia the iuic
es have been kept separate because
they make white sugar from the first
Juice. Fl. KoPke. said that juices vary
too much in composition. "Ths is
chemical and not an engineering prob
lem,' he said. Horace johnson took
"A whack at the idea and testified that
practise did not uphold theory.
Just to show that they were feeling
hearty the. chemists then knocked
spots out Of the Continuous Lining
process. william Ebeling said he tried
it out for three months, one time
"Then my sugar boiler got disgusted
and gave it up,' he said and, the dele
gates chortled. The engineers then
changed the subject.
Filters And Things
Excelsior filters have been mostly
discarded, they stated, but Mr.. Duker
said he cannot get along without one,
to strain the impurities from dirty
JUICES At this point Renton Hind
sand that Puunene has installed a new
battery of twenty filter presses and
next season win filter all clarified
juices, using Kieselguhr, and cutting
out the evaporation supply tank. The
clarified juice will go direct from the
filter presses TO the evaporators
r. 3. Norris advised all mills to
adopt the practise of double pressing
instead of washing the presses. at is
simply a matter of dilutions," he said.
double pressing is more satisfactory
because it uses less water"
CHARTERS And Heaters
e. Kopke told of the difficulties that
had arisen in the use of the Kopke
clarifer. The original construction
was faulty and improvements suggest
ed by use have been made. The chief
difficulty met with is that the juices
are "streaky." If the juices were uni
form the machine would do the work
but juices are never uniform and so
results are variable. William K Orth
of Koloa said they are still using the
battery Of eight KoDke CHARTERS or.
iginally installed. The invention has
not been discarded.
Mr.. KoDke then explained his heater
device. The first Kopke heater was
installed in Lihue mill back in the
eighties and is still in use, so in its
entirety it can not be called new in
vention, he said. 1t is better than
4 i. L. 10.