New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1858-05-07
r. ,adS,e .,a,n On The shoulders OF JOIN Bull Mr..
D,.-,sli has given il the coup se gr0ee.
Nvw pAYING-OUr MACHINERY OF THE
NV ATLANTIC TELEGRAPH.
,,o- TA Leasos Daay Se<., Apra2l

An Inspection OF zoe new machinery deo guea lVi
TIE paying Oh: Of the At ante Telegraph Caos ~.
amply repay scientific curiosity. No.nng spos-ently
can work more freely and admirably than the " loe
apparatus. We understand :hat !. has been .cipsc.ed
by come Of the fret mechanical engineers, who ave
ORE SEED Ii e. appreciation Of he arrange
mepts which have beer made TO avoid g.. :te
untoward accidents 70 which the csole may 10 SUP
ecteo
Our readers will remember that j. Wa oyus :"
some defect in o. niisusnsgenen. ot The r2y DScu'
apparatus that tho failure n laying down re csole
lss year TOT place The tension 10 whIcn the eaoe
subjected in passIg out Of the ship, Is owing .hs
weight Of that portion which has not 81 YET o1cheu
the bottom ard contttues the force BY Whicl the
other portion !s uDcoied from the Wheels or Dram;
over which it s ps.sed il its evolution iom me holi
Of the ship. The greater this tension me greeer the
speed witt which it will psss out OF the snip II
he not taken 10 check is progress. Mechanical ads
were devised TO obtain this check aud accCnmod1ts
the paying Of the cable 10 the rate OF me shps
notion There consisted of friction drums 70 sp
friction being regulated by brakes, as the chip rose
or fell vi the sea the pressure on the cable was
pece,sarily increased or diminished When the swell
caused any sudden descent OF the stern o. me vessel
Il was Lece,sary to ease the brakes ln the old ma
chinery the handle Of the brake could be turned 50 ~
either 70 increase diminish its power. The man IN
charge Of the brake, instead OF sufniag 90 as ID
ease il, 10 supposed In the excitement OF the mo
10. M 70 have turned il the wrong way. lnus the
fatal rupture was made. To obvate such cs.aIn-
y 80 this for the future, the whole psyirg-1u,
apparatus has been rernodeled Ire biasesmah
can esse tee retsrding apparatus, but can
add nothing to its power. Any addition T.
the FRACTIONAL retardstior can only be made by ana
with the full cogniz Of the principal engineer IN
charge. The n ction brake are applied 10 the cif-
cumerence Of wheels firmly at ached 70 the axes OF
the paying ont apparatus They are the seii-adust'
ing breaks invented by the Ingenious MIR. Appod, 10
prevent prisoners condemned under the eystem OF
crank labor from having more than their ia shsre OF
work to do. This contrivance has been adapted TO
the Dc wing out machinery by Mr.. Field OF the hrn OF
Maudslsy, Sons, & Field. The detals have been
brought into working order and numerous mechanical
difficulties overcome by tie zeal and energy OF Messrs
Bright and Everett aided by the great experience OF
Mr. Amos az practical mechaoician.
The paying out apparatus ccnslsts OF Two lSrge
wheels the circumferebces OF which are indented oy
four de ep grower. Both wheels are OF the same
diameter. One is placed at little distance from the
other both in the same plane and with their axles
parallel to each other. The e1es OF these wheels
work in a stout and firm frsme which is so con-
uced as TO resist any tendency of the cable to draw
the wheels toward each other The cable after COM
ing out of the hold Of the ship in which 1t coied Is
passed over the fret groove OF one wheel and then
over groove of the other; until the four grooves Oh
each wheel are occupied Each wheel has Its cream
ference passed by four portions o. the CABLE each
portion of coure increasing the friction or bite OF the
cable on the surface of the Wheel This sufficient
to pre- the cable from slipping over the surface OF
either wheel without causing II TO reyolve.
ANY means which can be devised for checking the
revolution of the axle or the wheel VIII re,ird the
motion of the cable over its circumference. For this
purpos two fction-wbeels drums, are firmly fIed
10 the axle Of each wheel. These drums, whose ex-
ternsl circumference is of pane iron, have band 10
which wooden blocks are attached, which, by means
of levers can be made to clasp the surface of the
DRUM The friction brake thus consists OF surface
Of wood pressing q surface OF iron, with pressure
which can be increased at the will of the engineer.
The clasppg apparatus is regulated by weights at
tached at the ends Of rods which act go rs 10 tighten
or loosen the brake The RODS work il pistons 30 as
to keep the action of the weights always 10 the
Ant,,. tfNx nj n no
!RS 5GPer direction irrespective Inc 0'0n 0' tue
The heat produced by the friction OF the brake is
kept from rising to any Injurious hight by portion OF
the drum revolving in constant supply OF cold water
The weights by which the friction OF the brake ia
regulated are fixed TO the rods, that they can only
be increased diminished by the principal engineer.
The friction retardng force thus 40 far se ADJUST
ing that it be increased except by the engi
neer allowing additional weights to be attached to the
rods. With one exception, it is constant. This ex-
cep.ion IT, that ct any instant when required the
whole frictona power of the brake can he mmedi'
ately eased.
Tie cable, after passing four times round each Of
of the wheels of the payngout appar stus passes u
der grooved wheel pulley, the axis OF which IL At
tached to weighted rod working in piston. Tnls
grooved wheel is arranged that it can rise or fail in
a framework, according as the tension OF the cable
which under its circumference, and over a1other
fixed pulley, by which 1t passes odt OF tne snip, Is
grea alter lees than the weight OF the pulley and ts
weighted rod. ,.-
This apparatus is in point of fac. dynamometer,
which the tension OF the rope a. " osDg pad
out of the ship. This tension is ind Gated by pointer,
which marks on the graduated frame of the pulley
the position to which its axis is raised or depressed
A man star de before this, in charge Of Wheel by
tuning the spokes Of which he can immedi-
ate y take of the pressure of the nxed weights on the
brake apparatus, and ease the whole the moment
dangerous degree of tension indicated by the index
of the dynaInometer, but the apparatus under his
charge by any perversity of fear or stupidity
be TO apply any greater strain than the engineer
NAV think e1pedient and safe. lie thus Instantly
the breaks but cannot commit the fat Al error at
tofin I'M inc THAR