The Hawaiian gazette., 1888-10-30
The Rival Feeders.


Mr.. EDITOR: noticed in your issue
of the 9th inst. letter from Mr.. w. II.
Cornwell, of Waikapu plantation, Maui,
as a testimonial anent the workmanship
and performance Of Risdon Iron Works
two roller mill With that 1 have no
fault to fnd but l cannot allow the
answers to inquiries on same to pass I'M
noticed.
The hexagonal roller spoken OF for
feeding the trash into the two roller mill,
at Waikapu (said to be the smallest
maceration mill in the kingdom), is the
same continuance that was used on the
largest diameter two roller mill in the
kingdom, by the same makers. Now it
is quite true that the contrivance men,
toned will feed two roller mill, if there
is not too much pressure on the upper
roller, and the crushing in three roller
mill is not too well done; it is also no
doubt true, that mills of that make have
the qualification of groaning" and
trembling" when there is more trash
than they can put through. This is
convenient, for it is understood to be a
warning" for the attendant to pull off
the surplus trash from the carrier.
The point sought to be made by both
the letter and answers to inquiries is, to
show that a common slat carrier with
this hexagonal roller does just as well as
the automatic trash FEEDER patented
by me in 1885, and OF which the Honolulu
and applied SO, with the most satsfac-
tory results; two more are being built
As an offset to answer to inquiries referred
to above, let me state that the Risdon
Iron Works in 1885 built 40 diameter
two roller mill, with the same kind of
slat carrier trash feeder, for the Koloa
plantation; this was, and is now the larg-
est diameter two-roller mill in the king
dom. The Koloa Plantation Company
ran said mill for whole season, during
which time quantities Of cane were
weighed off more than once, under the
supervision of Mr. Williams, who repre-
scented the makers of the Risdon Iron
Works mill, and taken from the same
pile of cane at the mill, for competition
tests, between one Of the Honolulu Iron
Works Co.'s 30in. X Coin. two roller
mills, fitted with my feeder and work
ing behind a 24in. 4Sin. three roller
mill at the Hanamaulu plantation, twelve
miles distant from the koloa mill. The
Koloa three roller mill was 26in. 54in.
regular Honolulu Iron Works make
and the above mentioned 40in. r. l. w.
two roller maceration mill behind it.
Everything, as will be seen from dimen-
sions, was in favor of the Koloa mills,
except the method of feeding; and to
that one thing-the patent automatic
feeder-was due the showing of about 5
per cent. in favor of the H. I. w. two
roller mill, even with the small three
roller mill, from which it took the trash.
My information is from Mr.. E. Kopke.
who together with Mr.. Williams super
intended all the tests; and than whom
more qualified and experienced planta-
ton engineer is not in the Kingdom. It
should also be mentioned, that the Koloa
Sugar Co., after having had sufficient
trial Of the slat carrier with hexagonal
roller and running through whole sea-
son, called upon me to put on my auto
matte feeder, for which they paid the Fl.
l. w. Co. S977.7S, and to me, personally,
81 900 royalty besides. Close mill man
ayers don't do such things without due
consideration, and certainty of advan-
tage. The manager Of Koloa plantation,