The sun. [volume] (New York [N.Y.]) 1833-1916, 1865-06-13

Ocean Telegraph.
The Process OF Manufacture Present ton-
dition- -ArrnnEement Tor Laying IL Down,
A .Nse-

| The Process OF Nnnufacturc--Presen I on
| ion-ArrnnEement Tor Laying IL Down,
| &C., &c.
| Tue manufacture 81 The great Atsntc Telegraph
Cable which WAS comm,uccd on tho first dag Of
last September tnd uninicrrupteiy cont nuo !,
night aud day, since, at the rate OF II niles
per day, VAS finally completed on the 29,h q May,
and we now present the following suocinct nara
tive Of the operations connect ted with one OF the
creates. undertaking. Of the age:
| A GOOD idcs Of the immense magnitude the
work Of constructing tho Ausutc cattle may 10
gathered from the fact tat II III various length
Of copper wire 10000 miles, Of iron wire ~ 900
| miles, Of insulating material Ns,i00 miles, Of
s,rsnds % jute $4,000 miles, AMI of twists Of
yarn dS5,0O0 miles, to be attached one to tho
other, the total ensth Of tho whole would be 2l5 500
miles short Of TIE distance between tho Earth and
| the Moon. Tho fin shed cable IL 1900 miles In
length, being . surplus Of $50 miles TO provide
sganst various contingencies arising, through The
different depths Of submerson, 10 tho process Of
laying II down. II ia one inch and one eighth in
diameter and In taking assertion of II in your hand
you may perceive It's several com ponout parts. In
| the centre lie close together the seven conduct
| ing wires Of copper. Arouni these wires
placed q series of homogeneous layers Of gutta-
percha, about one-siNth Of inch in thick mesa the
whole being covered by wrsppcr OF jute. Out.
4 side Of this Is mass Of ten iron wires, cosel =
twisted Each Of these ten wires has its own
separate covering Of Manila yarn the whole being
| rendered absolutely impsrvous 10 water by bong
Sleeped Ia . hot compound Of guits-perchA and
| tar. This outer covering WAS manufactured Al .
factory in the vicinity Of Morden Wharf, East
Greenwich, New London. Tho wire first came
! from II birmingham, AMI was oiled and laid away
for use as last AS wanted. WEcn used, tho ends Of
tic wiro were carefully joined by transverse cnts
Every week fay tons ~ this wire were used, and
| thirty mine tons Of MsnillA yarn were employed,
! daring thc same time as covering therefor. The
I yarn was twisted round the wire by ingenious ma
| chinery capable q covering 80 miles ~ the insu
lated covering wire per day. As soon as twisted
aud covered, the wire passed through the seethins
solution or tar and gutta percha and thence
| through . trough Of cool water, from which Il
emerged With It's imperyious coating, From this
| rougu the wire Was conveyed some hvndrci yard.
to the mAclino-shops At 1rIen wharf whore the
core, or gutts perchs-coverci copper wires wer,
already prepared and in waiting for H. The core
being wound on large reels was sunk int huge
| tMrcl-ke recopta,lcs, which were at t. LED
with water. Here IheyreaIiued Tor thirIy-siX hours
undergoing series OF tests by U, elec meal
.pp.r,,,S win, vicYt, H.. d..,,verv ~ .rv
hre,k or flaw that mich, c,,., a, lp,orr,,,o in
the o,v Of IN. ,l,,,-,,I cu,ren, The ,,s, hs,rl
,,r,re,st tho ,or. WAS ,,.,,,cl f., ,.i..,t,iI
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observation-disclosures. ,v,...l. I'D 81. -, ~,
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