New-York tribune., 1873-12-15

These methods of construction are worthy OF the at
tenton OF those who constructing railways In desert
regions where timber is scarce.
In the line Of plate and sheet iron there are many ne
collections from both Prssan and Austrian manurac
turers One OF the best is by the Diinger Company,
which manufactures 25OO tons OF boiler, Sheet and
timed iron annually One plate Of reservoir iron sent by
tb,s company is } feet long, feet wide, and 4Ss inches
thck it weighs 23O pounds. They also send packages
q, sheet iron rolled as thin tissue paper, and variety
~ bucked plates Very large boiler plates, both rect
angular and round, are also exhibited from Syrum
Oberhausen Prussia There are also fine exhibitions OF
Bessemer steel plates, showing that in this department
OF iron industry, as in Others steel Is rapidly replacing
iron. - - , 49,, ,,,,,c,r,ovo
The steel exhibition In both the Austrian and Prussian
sections is bewdering from its abundance. The visitor
"a surrounded on all sides by Dg0ts, great and small
broken In half and piled in rows in glass cases so as TO
show the fneness Of the gran There U.s. also' seem
no end TO the number of test rods and plates which
have been subjected TO enormous strain ana broken
asunder in hydraulic testing machines which record
the force required even to ON ounce. Some samples
were broken while hot and some while cold Some rods
break reluctantly and draw out to half their size before
they part others snap suddenly and In unexpected
paces Mechanical testing has become an indispensable
adjunct TO steel manufacture. Some English engineers
90 40 far as to say that the Of commercial steel In
construction should be stopped owing TO It's variable
quality and uncertain strength.
OF the large Bessemer ingots one from Carinthia
weighing o32O pounds and from Resicza Hungary.
weighing IT, $50 pounds, should be specially mentioned
The latter is feet inch long and 50 inches In diameter
Tn crucbe steel Krupp usual makes the heaviest dis
play The ingot block which he has sent here weighs
10000 pounds SEA It required the contents Of
800 crucibles containing 90 pounds The casting,
originally cylindrical. has been forged under soton
steam hammer into prism some 30 feet long
and 80 inches In diameter 1t Is designed for +inch
gun The huge ngot exhibited in Paris In 1867 weighed
40 TONS or about II less than this This enormous
forging Is the central object OF very costly
collection OF Krupps principal manufactures
The artillery material preponderates, and Is ex.
tremely Interesting 10 military men. The guns
ali load at breech and have Krupps round wedge
AL except the smallest are CONSTRUCTED ACCORDING 10
finished Railway axles, crank shafts, tires. psfons
etc also from Krupp's works, are exhibited In proIu
sion double crankshat Of crucible steel, for trans
atlantic steamer. Is remarkable piece or forging
Krupps also manufactures rails OF besse
stee at the rate OF 5000 tons annually His works
are hteaily increasing In extent Ihcy now cover more
than 4,7s4 900 square yar ana employ T rs" ra,io
elusive of 5000 engaged In minng Ihe proauetion
of cxst steei 10 the year 1872 exceeded l2o0o TONS
The establishment OF BOchum ID WeStpbsna adds
largely TO its prestige by s exhibition one OF the most
prominent objects ana tne . sbs ss for ' an lisa
steamer Il weighs 1900 pounds ana Is ~ feet 10
diameter group or car-wheels ana OF driving wheels
attention. Thcy are carefully anneaed to prevent brit
In the Austrian Court there very interesting col
lection Of sPesesssro aar aau ~ ral from
centage of manganese ranges from " s. The fracture
of the alloy with the highest percentage differs from the
ordinary sUisssl In bsans very heroas and white.