Richmond daily Whig. [volume] (Richmond, Va.) 1842-1861, 1846-10-28
From tAe Piitsbsrs Gaseits.
Mungt In rturC OF Rnsl N oad IRAN.

The following interesting description Of the process. Of
manufacturing railroad Iron 81 the wareham works We
take from an exchange paper;
The company 10 now onp'oycd in the manufacture Of
srosd ron which business. the 6r. srgo having
been shipped from tho work son the a,h in, Ia i thoush
hesn DC made here Hs ehespy ss be imported.
gentleman, who has recently visited the iron works In
engant says there IL establishment that country At
which better railroad iron than NJ tho
fremont works There are eight furnaces now in opera
nsn and when the works completed there will be IL
nc large breast water wheel attached the rolling and
other machinery, is s6 feet long aud 30 ia diameter
ihe h'st process IN manufacture is called pudding
ana o|cnng BY these operations the crude pig
ton Is freed from the Oxsgon, carbon, ard other for
eisn substances, and changed into malleable IRON
Inc Pug iron IL placed in pudding furnace where
II Is raised to very high temperature. Tho molten
hqud mass Is frequently stirred by the workmeu with long
bars inserted into small opening in the door OF the fur
mace To facilitate the combination Of carbon and oxysen
Ate some time the hudi OF the dimn she's and at
iengn assumes the eonssieoee Of stuff paste The d,ors
OF the furnace are then opened and three
hundred weight are then dawn and subjected the
aeuOn OF heavy tilt hammer, by which portion OF the
oxide OF iron, carbon aud other
not consumed during the fusion forced out The work
men hod ana turn the iron under tie hammer with long
oars winch become welded TO the half molten This
operation called bloom ng aud the IRON after having been
subjected 10 the tilt hammer, blooms.
Inc second operation Is rolling, by which the blooms
converted into bar iron. The blooms Sgain heated
and passed several times between a pair OF cylindrical
cast iron rollers. loot in diameter On the elf
egme'enee OF each Of the rollers several grooves cut
oil depth equal To hall Its thickness One heat sufficient
to reduce the bloom TO bar. IL first passed through
the deepest goove then passed back upper roller
'hen through the next lower groove and tie last
which hnishes the bar No force necessary after the bar
entered; the friction the rollers the oar
FOR the railroad iron the bars rolled TO one inch
IN thickness; one third six inches de and
three inches The bars pieces four feet long
oy machinery SIX inch bar 1T cold Is clipped oil
IN an instant These pieces piled INTO buGd,s con-
ssung OF three SIX inch and three pieces one OF
the Elk inch bars being iron that has rolled
lhls forms the lower part OF the rail, Tor the be
ct the best quality the Aangs, which are only one fourth
oil an inch. are liable TO be cracked in rolling.
These bundles placed 4 furnace aud their tempe
raufe raised to welding heat. They then taken out
and passed several times through pair Of rollers similar
to those above described excepting the groove. are
cut IN the form required for the shape the rail Tho
whole operation OF rolling rail Is performed IN two
minutes ard ten seconds much less than II
TO give an ineligible description The rails are cut by
circular Is feet 81 long but are onl, Is feet
when cool The rails are placed surface having three
inches curve. and when cool are nearly straight. Each
rsil carefully examined and if any aaw or impeecon
Is found, It is repaired.