New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1857-07-20

machine called the closing machine, and being drawn
upward it receives final casing OIL IRON wires,
twisted round it at the meeting point. There
are five Of these closing machines constantly
at work day and night, and the whole complete
about twenty miles a dry. After this process, ne
cable is passed through ar'tank the heat OF whon
is regulated by thermometer, and being afterward
cleaned by means Of brush it is then formed into
huge coils, preparatory to its being passed to the
Again, mnon a work which is in constant operation.
That part Of the cable which is intended for the shore
eIds II, usual, Of extra thickness. On the Iush
side of the Atlantic this portion viii be about % miles
long On the Newfoundland coast, where the ocean
becomes deep almost Immediately it will be ouy
5 miles. On both sides, however, the elimination of
diameter is TO be effected gradually to avoid any
mechanical danger connected with tue laws Of
nressure II NAV here be observed that tie greatest
pans will be taken with the concurrrcs and cojpera-
lion Of the Admiralty TO prevent INJURY henr The coast
from the anchors Of vessels ard othtr snuar causes,
for which purpose the Admiralty charts VIII be uade
IN include the course OF tie electric ca1e, aud baoys
will be fixed aproper intervals OnsN lhe most
estpg features in the process Of manufacture IL the
mo ~ the wires which TAKES place about every Z,VV
yards Such is the effect Of the process adopted thai IN
case the cable be broken bya current or otherwise one
wire would remain unipjured, aud the communication
would not be interrupted. The metal would spring,
and the electric current might still be conducted
Nothing could be- more beautiful than the welding
process in the joining If the cable. he bevied parts
OF the wire havirg been united, THU strips OF gutts
percba are wrapped over, and welded with the ad oi
a flame Of vaporized MAJ htha. These are ultimately
covered with thick coating ~ the same material,
md il order to srencthcn he cohesion between the
old and new gutta percuA at the point OF Junction,
portion of the latter s atrrTard cut of, prior to its
lcipg welded with the former, which IL warmed, as
before rdicated, for that purpose. After witnessing
the operation it is impossible to doubt that the ce-
nentaon il perfect. This point is OF the more I'M
po,tapce inasmuch rs fears have been expressed as
to the practicabi.ity of efecting perfect union In
The middle of the Atlantic where, according to
present arrangements, the Agamemnon ana tue
Niagara are TO part companythe former to return to
this coubry and the latter to convey her portion OF the
cable to Newfoundland Ii the welding. junction,
be as simple ard tacile matfer-and there is no ap
rsreLt reason why 1t should not-n midocean as at
The mandatory, five minutes will suffice to tie the
international knot The prospect Of successful june
lion where these two vessels respectively 10 begin
and finish their task has been rendered more secure by
an Ingenious contrivauce just invented by German
mechanic Of the higher class, for Obvatng the strain
which might be expected 10 occur. Ii consists of the
use of eyes that nterOck each Other and the re-
suit will be that whatever strain there may be Will be
entirely diverted from the cable. There is separate
apartment in the manuiactory called the testngro,m,
furnished with all the necessary apparatus Tor testing
the continuity of electric currents before the wire Is
finally deposited in the hold of the Agamemnon; and
the tiDkrg of tiny bells gives warning of anything re-
curing attention.
The visitor who has witnessed the several processes
of manufacture manipulation thus indicated is nat
urally led to visit the Agamemnon, where If he be
properly introduced, he will meet with most frank
and courteous reception from the gallant commander,
Captain Noddall who seems as much devoted to the
success uf the electric cable il formed part OF the
naval exploits of his nation. Having arrived on board
this noble vessel, the spectator OF yesterday behed
the cable being drawn, by means OF donkey engine,
npon the upper deck at the rate of 81 miles an hour
the average rate at which it is delivered after allowing
for unavoidable stoppages, being u miles an hour or
"A miles day, night forming no interruption. Upto
nlt1A IN
ON an Indicator BY means of which the cable Is meas
ured as it comes on board On descending to the
main or second deck, finds an engine Of 2ihorse
mower with the necessary machinery to recover the
cable line in case Of necessity, though sanguine hopes
are entertained that s services wi not be needed aud
on on side of the deck is long range oil offices,
constructed for the OF Dr. hitehouse the electr
cian and the staff which will accompany HIN
age Low er down, in the vessels capacous hoid might
he seen 70 much the electric cable as was already
ON board, the coils already extending to depth Of
seven feet. Its receptacle is portion OF the hoid
forming in the lower part nearly an epse, comprising
at the center about 10 feet square. AZ areauy Gu-
mated the total quantity Of cable to be received
$50 miles Each coil at the center forms Length OF
about 81 miles, and the weight of the cable Is about
one tun per mile. 1t is expected that the whole Of the
cable viii be on board by about the both instant, aud
that by the Odd the 2jh the Agamemnon viii be on
her way TO Cork, where che is to join the Niagara
The precse then to be pursued as regards the
paving out of the cable by the two vessels is not yet
wind and weather and provision will doubtless be
made Tor all the contingencies which wise foresight
aid the concurrence of the most experienced heads
can anticipate
supern,endence OF two of the greatest electricians OF
the day. Dr. Whtehouse of this country the chief cleo
trcian Of the Atlantic Telegraph Company, and Prof.
Morse of the United States. These gentlemen are
both doing all in their power to insure success to the
enterprise. They in constant communication with
each other and their intercourse WILL no doubt, be rs
beneficial regards the advancement OF teegrapalng
in general it is imperatively necessary to meet the
new and extraordinary requirements which have
sprung out Of the pending experiments. In further
aIce Of this object Dr. Whehouse has been for some
time engaged i'll some Interesting Investigations win
regard to the time occupied by the Transmission OF
electrical currents for immense distances in the ocean,
and he has invented scrutnizng agent which at once
ascerans differences, and places the results on record
so that they can be examined and compared,
and made the basis Of future discoveries and
improvements. The basis OF this instrument is a NIB
bonof paper, chemically prepared, unrolled from
Crum. An application Of Prof. Morses printing
machine which, with the aid of local batteries, I'M
presses marks ON the ribbon and seconds pendulum
whose vibration taLsmls an electficai Gurfen. ~
opposte directions along the wire at each beat or
seni.best The effect Of the process s that there are
three parallel Of marks impressed on the surface
Of the paper-the inneTmost representing the home
sgns the next the distant signal, ana the ,hrd the
seconds. From the relative positions OF the marks
may DC learned the velocity Ut the several currents
ard the interval between each and the main object VI
the experiments, which are entirely novel, having
arisen out of the special requirements OF the Atlantic
enterprise, is Of course, to diminish the period neces
saIy for exchanging signals. la connection with TINS
point, it may be remarked that DIR. Whitehouse has
actually devised mode Of weighing the force OF elec-
trical currents. Hitherto there has been no means
whatever of ascertaping this. All thai could De sad
of a particular current far as its force was con-
cerped was that it was slight considerable, "a the
case might be- by means Of this wonderful invention,
. curent. after it has travelled thousand miles may
be weighed with the utmost nicety-an achievement
which hardly fail to be attended witn the most
imnortaut col in connection with the extern
Il, .ofsu Inns rire