The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1873-06-28

tion than it otherwise would have been SO that 1t
possesses very high spsaakng capaf tn comneted
cable before being submerged was, with either cur
rent, $50 meqohms per nautical mile when reduced
to temperature OF IS degrees Fahrenheit after
I'VE minutes Identification. The cable, when
coiled in the tanks was tested for insulation under
made by Mr.. Wnloughby Smith, who as chief
electrician to the Telegraph CONSTRUCTION
ana 10 be ~ he stan
on board and ashore during the laying OF the cable
AS soon as the shore end has been lad II WIN pe
brought direct into the test room at Valencia and
connected with Instruments series OF tests
will be continuously made to determine the
tlvity OF the cable. A code OF signals win he
used, by which communication Will constantly
be maintained between the shore and the ship.
viii produce in the ships insulation galvanometer
defectlons either to the right or left, which VIII re-
present dots and dashes in the Morse Code, the
lett, or negative, being equivalent to dot, and
the right, or positive, to DASH Continuity tests
during the time OF laying once every day the
ship win signal to the shore the distance run, the
number OF miles paid out, and the insulation re-
sistance per mile.
THE CABLE is DISTRIBUTED
between the Great Eastern the Hibernia ana the
Edinburgh, the Robert Lowe carrying the shore
ends and the electrical stores. The Great Eastern
has on board about 1900 miles OF cable for the
brgh 1865 miles for the Placentla lines. The Hiber
MIA also carries the shore end for Hearts Content
cuatlng the length required the repairs to the
1865 cable had to be taken into account
es on Of srappn ss rop Sse' besides sSss
$4,000 fathoms OF smaller tackle, and nlteen
miles Of coir buoy rope, SO thar they are well
has laid the shore end at Valencia she will return
to the Thames and snip the four shore ends for the
coed and join or await the other vessels On leav-
ing Valencia, the Great Eastern, accompanied by
the man cable @ Wen this
has been effected the two latter vessels with the
Robert Lowe, viii lay the sydney cable alter
the Great Eastern at Hearts Content. The two
will then proceed eastward along the course
56s miles from valentia, where 1t will be grapped
Tor and i Is to be hoped found and repaired On n
repair the burberry section OF
THE FRENCH ATLANTIC CABLE,
which was broken last month close In shore. she
win also effect some repairs in the cables belong
ing to the Newfoundland Telegraph Company.
The Edinburgh. when her task has been completed.
ship portion OF the Brazilian cable, the greater
part Of which 1t is intended to lay during the
Each Of the four ships is fitted up with laying
machinery and picking up apparatus, similar IN
general character put Win slgnt variatlons IN ue-
build and equipments OF the vessels The arrange
ments board the Great Eastern, of course, serve
orally known it is unnecessary TO do more than In
dictate them here One material alteration has
been made on board the Great Eastern, ana that Is
the addition OF cable tank, which is situated in
the after part OF the ship There are four tanks
e@ nches ~ me- and )" inches
Deep the second rs feet diameter and 10 feet deep,
the third SO feet diameter and 20 feet inches Deep
and the fourth or new tank SO feet diameter and
20 ieet inches deep. In each of these tanks the
cable lies coiled in four lengths, immersed in
along trough. guided at intervals by horizontal
and vertical friction puleys, to the paying out
n sx ae an
being connected. with Weighted levers at
| tached to disc wheels working in the grooves,
and acting as brakes. Each OF the wheels is
also connected through It's shaft with friction
brake. The whole OF the lever brakes can be ope-
rated simultaneously from one main shalt If neces-
sary. The cable, after passing over this brake
apparatus takes iour turns round drum ieet
brake, and is passed thence to the dynamometer.
by which the strain on the cable can be ascertaned
| at any moment OF its passage through
THE APPARATUS.
| From the dynamometer the cable passes over
o over the STERN STERN Of the ship The pickne.up sp
paratus is placed in the bows Of the vessel, and
q Rus over the
each feet in diameter. The coiling apparatus is
worked by a small engine which takes steam frsm
between the bow paiieys and the coIing engine
| completes the pickingup apparatus, which, no
anan '2e sGsd p pas.
perience, can render it. The graphing
are Gess adapted for heavy or LIGHT work. they are
made Of WIRE the heaviest rope being composed OF
| six strands, each containing six wires and the
ghtest having three strands OF three wires; there
being tw0 intermediate sizes. The Great Eastern
also carries eleven iron buOys OF five different sizes.
se ron inches m dameter feet
The other vessels also carry their complement
ing the laying, if necessary, or the grapnels while
picking up. The signalling arrangements are very
complete, there being system tenn Of pneumatic
| so that IL anything goes wrong IN the uncoing
Of the cable the vessel can be stopped at once.
apparatus there are also signals communicating
with the engines as well as with the steersman on
w e y "a Is o the
great ship from that point Thus equipped, the
arest Eastern and her two companions, the Edin-
Portland Roads at ten O'Clock on Sunday morning,
the three vessels representing in the aggregate a
moving mass worth something like
TWO MILLIONS AND HALF OF MONEY.
It may here be interesting to note the lengths OF
recently broken, is $685. miles long, and the cable
OF 1856 is 1,sssa miles. The French cable OF 1869,
rom Brest to st. Pierre, is 1851 miles IN length;
same length that OF 1885, Since the latter cable
broke the French cable parted 2s6 miles from
was repaired by the Eibernia length OF 100 miles
having been cut out and replaced by similar
TUE CABLE OF 1866 TO BE GRAPPLED FOR.
1t will thus be seen that the work OF the expe-
dtion will consist IN laying three sections ofsubma-
Others. By far the most interesting and important
feature under the second head 10 the graphing for
the cable Of 1865. which broke few months SINCE
1t will prove interesting inasmuch as 1t will de-
| termine whether the physical condition OF cable
which has been submerged for eight years Ia such
as to allow OF its being raised or, in other words,
whether the outer covering will have become so
deteriorated that 1t will no longer possess the
which will be brought upon It in rails
ing it.. Of its being found and grap-
pied there Is but little doubt, the same
thing having been accomplished before under less
favorable circumstances and with more limited ex-
perience than in the present instance The matter
derives its Importance from the fact that II the
suits are successful 1t will prove great cODmer-
cia gain to the enterprising company TO whom 1t
belongs. The cable has parted IN about nineteen
hundred fathoms OF water, and so far as has been
ascertained the bottom Is OF favorable nature for
graphing operations me ureat Eastern and n .s
cable up to the middle OF september even longer
II necessary for she Is equipped for four months
VOYAGE 1t is however, to be hoped that her
lahors have termina ted successfully before that