The Pacific commercial advertiser. [volume] (Honolulu, Hawaiian Islands) 1885-1921, 1891-09-19

dUIOh6G VI OuO oAOGuSI Win Guo III
doors towards the stern. We need
not particularize all the engines,
merely remarking that while at
work, the cutter, the suction
pumps, the chains for altering the
direction of the cutter, are all un-
der the control Of the one engineer,
who from his glass pilot house
overlooks the whole, and with his
throttle valve and levers within
reach, can work the whole ma
chine.
The main engine once started.
the various separate engines can
be started or stopped just by the
lever commanding a friction strap,
just as in factory each Individual
lathe or what not may be set in
motion or at rest by the placing Or
displacing the driving strap, while
the engine itself keeps steadily on.
The outward or bow end of the
scow is secured by two chains lead
ing to anchors or other fastenings,
one on either bow, and thus it is
obvious that veering on one chain
and shortening IN on the other will
point the cutter, which is in line
with the keel of the scow, in the
direction desired by the engineer.
Now we come to the great cutter,
to the action of which everything
else is auxiliary. Projecting from
the chow" or seward end of the
scow is a huge fabric which looks,
but that it is so much heavier and
substantial, SO powerfully braced
and crossed braced, like big pile
driver slung horizontally. Through
the length of the construction, in
the center, lies the cutter shaft and
underneath and little below the
shaft is the suction pipe, at the ex-
tremity Is the cutter itself, a huge
I drum with cast steel blades ar
ranged spirally ON the outside.
To set the whole dredger in
action, the scow being secure in
the chosen spot, the engineer low
ers the cutter down, till by it's own
weight it lies on the ground to be
removed. 1t is now set revolving
rapidly; the knife edge cuts and
tears up the mud or silt, which
falls into the hollow of the drum,
whence it is caught up by the sue
ton and brought to the level of the
scow, which it traverses until it
reaches the pipes on the pontoons
into which it passes through flex-
ible joints. It is then passed across
the interval of water between the
scow and the dry reef, where it
continues it's journey by pipes on
piled trestle across the reef till it
reaches the dumping enclosure into
which it runs and is left to settle,
the water passing away by perco-
lation, and the solid matter being
deposited on the reef, will with a
sea wall in front of it provide many
acres of valuable building ground
for the necessities of the Honolulu
of the future.
Of the engines it is only neces-
sary to say that they will be con-
densing engines of the best type,
and with every modern improve
ment. Surface condensing and the
circulating system will supply the
boilers with hot fresh water and
ensure every economy of labor and
fuel, with fullest development of
power.
The construction of the scoW it,
self would have been further adj
vanced by this time, but that, I'M
fortunately, the consignment of
timber which came first to hand
consisted largely Of planking and
the lighter scantling, which is not
wanted until the heavier timbers,
engine, balks, etc., are in place.
This timber, however, is now being
unloaded from the Robert Levers.
No time will be lost now, either on
hull or machinery, and the dredger
will be at work before the end of
November.
The Alphabet of Alcohol.