The sun., 1895-02-03

the larger bare places the barnacles Were
~ mainly N.Y. found in the immediate vicinity
Of the plate the barnacies were more
scattered. In most cases they had not pene;
trated through the lacquer, which was in good
red rust, was found on the larger bare places;
frequently were coated with n black substance.
probably black oxide of iron. No eyidences OF
structor William J. Baxter, who submitted on
Oct 20, 1901, the report OF the behavior of the
fi The % lacquer 1 appears rsis to be an admirable
anti-corrosive and ant!-fouler. excepting rs
regards its tendency to blister. These blisters
tcity and tenacity Of the lacquer cause it to be
loosened over II greater area"
A lacquered steel plate from HOtta & Co. was
also Immersed at the centre wharf at the Pen:
sacola Navy Yard on July 81. 1891. and
The plate was found to be covered on both sides
with white spots in size from quarter to three
large large spots from to 10 inches in Size. A sub
stance resembling coral was also on the plate.
Quite q number Of large barpacles were on
or been rubbed off. some OF the barnacles were
three tufts OF grass growing on each side Of
the plate. These started where there was
Reed then commandant OF the Pensacola Navy
Yard, who sent the report TO the Navy Depart
mcnt wrote that he thought an exposure of the
plate for three months more would have served
tn cover the plate entirely with the white spots,
and that many more barnacles would have been
in at the York Na
Yard on Jan It. Iss and taken up eTaetIy
Mintoyne reported concerning these plates:
They were covered with mud and slime but
there was marine growth OF any kind. Plate
A was in as good condition when first i'm
mersed. On plate b the lacquer had raised and
cracked in places and was loose for about one
twelfth the surface on one side. On the other
side it had only started in a few small places.
From the appearance OF the plates think they
had prevent
from the fact that the holes that were punched
before immersion r 70 suspend the plates show no
Although lacquer has been quite extensively
used on the skin plating Of vessels. i can hardly
temperate waters is naturally more protective
than when employed on ships frequentinR
which animal life in southern seas attaches
itself TO the hplls Of ships; The durability of
ash tray of lacquered wood recovered from the
wreck OF the United States ship Oneida after
being in the sunt sea M for nearly decade The
evening of Jan, 23. 1870. by the Peninsular
and Oriental steamship Company's steamer
lost with the an-of-war but the Bombay was
not damaged. The sunken hulk was sold four
years later 10 Japanese merchant. The lac
quered tray, with other things, was recovered
some years later and found 10 be in excellent
condition. The fantastic designs on the lacquer |
could be distinguished readily.
AS cooper sheathhg has proved so successful |
for many Years sought to- mprovs Upou the dee
by experimenting IN the line OF eectroplating
with copper the hulis of iron or steel vessels.
II was long considered to be an impossbi!ity,
but the problem is now thought to be solved.
The trial OF the process on the hull of n sea-
results will be eagerly awaited. The method OF |
copper plating ship is precisely similar To that
Assistance, upon which the experiment was !
tried, was first docked and carefully cleaned. ,
and rust were removed. An electric plant was was
then established near the pier and the dynamos |
siSrisa SaiDa the is sefo%Plshed 6
an an. electric current To have t!oatod ths
an enormous expense. but this was overcome by |
the use OF iiquid-tight boxes. These boxes, |
about foot deep and five feet square, were CON |
strpcted in such way as to conform TO the hull. |
and after being placed In position and filled |
curely. In the process the top of the box re- |
mains open and the four anodes in each box con- |
stitute tho positive pole, while the iron vessel |
considerable hlm OF copper is deposited, and |
in forty-eight hours more the copper deposit in
Crcases 70 one-sixtecnth Of an inch. IL Is so |
firmly adherent that IL can Only be removed by |
chlses and hammer. and oven then IL is said that |
with II, showing the perfection Of the welding. 4
The weight OF the plating is but e.so pounds to .
A minute description OF the copper-plating
process was published IN THE sun OF Dec. 2i, .
1T Is asserted also that under tests it has been
ionnd that in case OF hrrakage the steel hacking
" NHt IleN pI'Nts9 VIII hTchk teIOrt the copper,
thus adding To safety of vessels in time nf cOi-
lison. a naval officer has also asserted that in .
case or such an accident tO II mRn-Of war Rll .
that would be necessary would be To build a
tnIIer dam around the injured plate, and then
turn on the ships own dynHmos and repair the
injury then and there"
The ship Copper Plating Company. OF which
James II. ieorge of this city Is President, owns
the patents in this and the chief European cOun-
tries Of the method OF APPLYING the copper. In
ense the results of the experiment on the Assist
snce are sufficiently satisfactory an extensive
plant VIM be- built 10 continue the work.