The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1877-05-20

THE DISPOSITION OF THE oBoUkHoFF GUNS Is TIE IN
PERAL NAVY.
The large iron. ciads, the Peter the Great, the
Poponkus Novsorod and Vice Admiral popoif use he
twelve and eleven-inch guns some OF tho larger ur-
retted risates also the eleven inch guns TIE ma
Jorty however OF TINS class OF ships and me monitors
use the ninc-incn guns. The scagony irigales ana
cruisers. such as the aagshp svctana, now our
waters, use The eighi.inch The six-ipch ObouH
non guns are used on board The corvetles clippers
o; The Imperial navy, as wen on the coast defence
gnnooats The new gunboats, built in sections anu
capable OF being transported, about which much curl
osity Is felt and from which so much is expected. are
said easily and one-hnf Knots, and to
sivcelsy handling oil their powerful eeveninch thirty
ton guns The nine-pound howtzcrs are used on the
smaller vessels Of tho navy as supplementary ord
nauce. They are also useu on yachts and funboats.
The !ourpound howitzers are used on the buwarks Of
large sinus tor defence again moving torpcdoes. The
only difference between these Oboukhoh guns sent 10
the navy and those made Tor the fortrcsses lies IN The
The powder used for all these guns IS that
known as prlsrnaticnl
THE GovERSMExT GrS ForSpRIEs At
These great works, winch furnish principally the
artillery used in Russian forrcsses ana in 'he Russian
army, situated on The cit bank Of tho river huma.
about four versts from The city Of Pcr the CHEF seat
OF the district and government Of The same name.
These produce large steel guns up TO as high az
eicvcn-inch bore OF the group ta) and guns and pro-
Jeclilcs TO twcnty-nch diameter IN the group ~,
field artillery, muskct barrels proJectiies, &c. The
WORKS were started ny the imperial hussihn govern
ment In 1864 aud now have an annual production OF
war material OF from 20 10 20 steel guns OF various
calibres from 20 10 % nne-inch morlars weighing from
ESQ 900 10 $50 600 pounds from TO- 900 600 musket
barrels; guns OF cast iron, weighing from 100000 TO
SOU 900 pounds, and Of projectles OF hardened cast
ton in value TO about 81, 400, 600 The total
number Of workmcn employed is some 1000
THE WORKS.
The various steam engines employed have q Ca
pacity up 230ohorse power There are 24c furnaces
Tor the manufacture OF cast stce! which are heated
with wood and l44 which use coke. There are 10
ovens Of the system known rs Siscning, and OF that
known as Pcruv; pudding furnaces, welding
ovens, for gaseous cast Ii reverberaiory furnaces
American furnaces and about 100 smiths hearths.
The array OF steam hammers Is Formidable, There are
| with q capacity Of 90 tons, with 10 tons With Il
l vii i " fnnS
pounds, | with so pounds and finally with 400
pounds The cast used Is received from the grcat
blast furnaces IN the mining district Of Chronological.
whose great magnetic iron mountain Blagodal has the
me annual production OF vi 40 900 tons Of 900
pounds Some puddlcd steel rs received at the Perm
Gun Works from the mining district Of Zlatoust,
The Ura. but tie major part Is manufactured on tho
spot.
The following description at these works of 2cinch
Rodman iron gun Of Its manufacture ana trials,
Will be .ound interesting The gun is 2l6 inches; out-
side diameter OF the breech "a incncs weight Of the
gun, 40 tons; weight OF projcctile hollow spherical
shot weighing |, $50 pounds. On is trial
this gun fired 3l4 times with charges OF from 100
to 100 pounds lRussan) OF prsmatc powder. The
bore hao expanded Ut the conclusion OF the trial
u COS inches
Six gas furnaces required 10 smelt the amount
OF cast used IN the casting OF the gun In each
furnace IS 40 pounds sneltea. The smelling OF
the took between four and halt ana tour
and threequartcr hours. Tho pouring OF tho molten
Interruption, aud in the short time OF twcntythrce
minutes. The cast mass was allowed to cool ten hours
before the core was taken out This operation took
about two hours The water was then let into The
bore, and continuous stream passed through until
the had cooled thoroughly, which took place
after 16l hours Tho casting mixture was composed
OF and twohrds per cent OF remelted cast iron
eighty three and one-third per cent of new bay
onet cast iron. OF the latter one-ha was manufac-
tured OF magnetic orc from the Blagodat Mountain,
oue-quartcr was from mixture OF nahum and brown
iron ore, and another quarter OF brown iron alone
Under physical tests i've pieces OF standard cut from
circle in thickness which bad been cut out Of
the cannon It's mouth gave The following excellent
results Average tenacty 50 500 pounds to the
inch IN short pieces and 20 200 long pieces. The
average iul stretch before breaking 0HO2ss; the
average elastic stretch, 0o0lS1 The average Of fun
compression produced by weight Of $4,000 pounds
compression under the same circumstances O.00425.
Tho had specific gravity OF 7.2Il The gun
cost 10 manufacture $3.50, or about s. 10 per 40
pounds. The foundros above described are the
principal ones IN Russia. though there are several
smaller ones both govern menal and private-notably
tho AIexandrovskn works the government OF