The Panola weekly star. (Sardis, Miss.) 1882-18??, 1885-05-09
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nt ildF pfUeOff wh ofhaf de.
u mtuif.i hydraulic pfpcsst being
u iJ hpfa fte mnndrel through lhf
lr ibu plafrVf .faoI eventually tectmc
p .noI tulroi uniform thickness and
tnt brio nHd circumference IIt
.'nni Wi found ~ work ~ easily a. thf
@ on copper mi no change of tool.
Uu nD"r irY
"a .'o Wtf riclpor linn copper. thr
advantage N .HhM ttuing drawn strn.
lDHWtrW fUb0H fUf brass or copper one,
wu mpniit.l But The saving In price
WW altogether the smallest gHin ~
ihr ntOniHhmonl ~ thDse engaged IN
thr o. pertinent, The stcel WA found ID
have radically changcd ia character IN
thn process II went into tto machine
toii and plinblo II came ont, although
drawn cold, n beautifully tempered
spring II tube WIS compressed, il
would instantly resume It's shape when
lh" pre- SURF WIS removed II struck
with q hammer, n rang lik1 i he'll,
while tests IT the increased strength OI
the metal showed e change that wan
wonderful 10 fully test its strength Il
boiler Of the size aud style used hcsid,
every range IN New York lals VIZ.
made from the sierl by this process.
Irc metal Of the boiler wls drawn oul
10 q thickness Of about one thirticlh d
nu inch and II then stood q pre-, sure d
~, hundred pounds 10 The square inch.
giving way when that limit was passed.
Alicr This gul other tests the o,pcri
monlrrn began 10 wonder why u gur
barrel could not bo made " steel by
tnIg process that would be- superior II
amy other They first made tube 81
,ly inches bore AMI half an inch thick.
ness VI metal, This wHs drawn cold.
Then another Was made of thu same
thlcknn.s OF metal, and Of u bore thai
would permit It 10 bc showed over thu
lrt ono by the hydraulic press when 4
was warmed, the first remaining cold.
\ third wa. Then drawn over thr two.
and thu, WAS completed n cannon II
was found that it would stand u waite.
pres urc Of seventy five thousand pound.
Ia The square inch. This cannon ha.
been sent 10 Sandy Hook, aud the OH.
GERS of the artillery corps will try t.
burst 1t by the usual tests applied Il
new cannon They have before then
the Astonishing spectacle Of u gun thai
viii throw a solid shot weighing on,
hundred pounds, although the metal /,
only II inch and n.halt thick arount
the powder. To people accustomed Il
seeing tho common cannon, enormously
thick NJ the breach, IL will seem in
credible that an inch and a-hlf OF thi'
metal will serve the purpose better.
II is well known that one cause Of Tho
high price II Illuminating gas 10 III,
consumer is the great quantity lost b,
leakage through the cast-iron pipe
used. In Pittsburgh II was found tina
this leakage Of the natural gas was Sc
great that serious and fatal explosion,
occurred Every foot of tho cast.ir
mains hero has In consequence beer
ordered out. The great size Of the Dor,
needed prevented the use of the lap
welded w%roughtiron pipe, and tn
seamless pipe OF paper thickness will b,
used, IT, great density being proc
against any leakage Of gas OF liquid
under amy pressure. The tendency u
oorrodc wen under ground il yer,
small, but this objection to steel will b,
wholly obyiated by coatings either o.
tin or aluminium bronze within and
without. Tho steel pipe is not only bet
ter but cheaper.
MIX cans arr being made OF tho new
steel tubing. The bottom is an eight
Of an inch thick. aud the sides abouI
%onc-lonrlh of an inch. The banging o.
the most vigorous Yankee cheese. make
or % The most reckless b. akcman on !
MIX train can not dent them OF serious
" lujurc them.
The oNpcr mcnters have also turned
their attention 10 clock springs. and
they have found that the new process,
moi only makes n cheaper but n superi
or quality Of spring just what change
The metal undergocs In this process d
drawing has moi been determined. Thai
i becomes ithrous Is plain. Iron drawn
into wire becomes tibrous also. but Il
does not become n tempered spring. =