New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1891-11-15
TESTS OF ARMoR PLATE.
,,rr SHOTS FIRED AT EACH OF THE THREE
SPECIMENS.
,,,rx OF THE HIGH CARBON NICKEL
,-xrRsATED PLATE FROM BETHLEr

rrY rYyTREATED PLATE FROM BETHLE
urv-pErAILs OF THE FIRING.
NV TELEGRAPH TO THE TRIruNEi
,..or Nov l4.-There another important
"" n,a,. test to-day Mt the Naval ordinances proving
armo' :, indian Head. The recent test. and tho
sT.-.nt examination of the backs of the pa'es
suossq an that OCCASION showed the supremacy OF
carbon nickelsteel untreated plate from the
NE , M Iron Works over similar plate OF low
Ie'".,ior from the carnegie works, and Harvey
e$ro,,s., Mate from bethlehem. The llarveyiEed
s as most severe on the projectiies' wmie t"o
P~ .,,sn Mate presented an unooked-ior hnVui"cr'
hSt" Tho weakness OF the alsteel plate was al
S.d 10 the absence OF the aiioy when k"oe
npI 70 the plate, rather than to the failure OF
ras.r noeess to sustain previous RECORDS.
~e vere irregularities OF penetration no'eo IN the
JUG" dine II was presumed to inequalities OF
ras The rolled plate OF the first appeared to good
s~.. Int IL was left for future results 10 deter
H .,s exact value of that process Many methous
n .,,v,nr the Harvey process suggested themselves
r promising being the Introduction OF the car
VIC one side Of the ingot prior to any Forging
Pn "a .ommendable for its economy OF time ana cost
neu ..,ons which were present after the i've shots
The queSus v,s trial were expected to be answered
" -. tuo remaining days firing, and' thereioie' W
- -. ,.sults we're awaited with interest.
|" ,r.re a GOOD many people in attendance 10
Inc. ,dI,c secretary Tracy, Assistant Secretary
sa, senators Morrill, and Hawley, General flaeor'
soS'' - Chief Of Ordnance; and the militia &'~acheS
'ne so,.isn legations, who all took copious Ro'es
y" .t,entiye observers. For purposes OK COM
tN m. conditions Of today's test were more
pnS, .,,,c.I with those OF the first day. Tho hrst
ne<n - cach plate were fired from the olnch
pui .at,c rife and the last or centre shot, Irom
p ro0. Gun The velocity In the former instance
Ho COX. and in the latter, LOO, except OH Vne
" 49,, ~ the DAY, when Firrniny sheii WAS useu'
W. h.nr lighter in weight than Carpenters oihon
any, 49, velocity was increased to LOO. BrOwh
she'll lh' - from the Dupont works was used.
pnsnN n.b sun Hotter shells were used, the
IN u >.,ns 100 pounds and the charge 4o4 pounds
weis' inch shots two rounds were fired with Car
~ oso mound shells, requiring power charge Vi
p ..v two and one half pounds, and the hnsl rouhu
r,rmlnv projecule, the manufacture OF "hloh
VIZ c.-n.nter people aim to duplicate. Inc po"uer
inc - the Firminy projectile was seventy ana
ens ,n,ss The distance between gun and target
WV ..r.r feet There were three plates, mSh
"s ,.s.lsteel OF forty-four points, from tne
ea'VOA ro-ss. lowcarbon nickelsteel, Harveyizcd,
..S',vsys points from the Carnegie WORKS a h'eh-
" s.s,isteel. Harveyized, Of thirty-fve points,
- an. gethlehem works. The record OF hrlng Is
,s follows; o....,. ,,,h- .o,ho,
io ,s S,nd MINER corner. The projecule penetrated
oa As and rehounded unimpaired, fotysx feet shor'
,.a,I racks in the bulgng ut point Of impact were
dseernible. $50 , ,,-,o,,o,
Round No 2Frs shot against the Carnegie harveSlea
.,n,o n,,kel pa,e lefthand upper corner The pro-
n .,.,ss AL inches and remained In the aperture Oh
q, avn making; there q short radia crack IN tho
bula. no other injury to the plate was apparent.
P.unh No. s-First shot at Bethlehem HarVeylzed Psh'
carbon nickel plate, at efthand upper corner. n pe
t,n a. the shell IL inches the projecte reDouhue"
,na a. the mouth Of the gun badly demolished
AZ the end Of the first series Of shots, one piae pre-
.ntea m relative value another. There were no
.vdences Of weakness other than local disturbances Vi
IRE surtace Tho Carnegie Harveyzea low-carbo pa'e
showed a greater penetration than either OF the o'he
Round No 4-Seeond shot against the carnegie hgn
CANON plate rlghthand upper corner the pro'ec''o
n,,,ss 1o inches rebounded fifty feet and broke Into
t,rm.nt there were cracks, except radial ones In e
bulge around the point Of impact
Pouna No 5-sccond shot against the Carnegie low
.,,bon plate nghthsns upper corner Inc enec' OIL INC
a., .ho. against this plate repeated the penetration
b,pr slightly greater 14 inches. and the shell remaining
IN ne plate the firing about fringe about point Of impact
WIS two high, and the burr was somewhat prohen
Round No. e-Second shot against the Bethlehem high
carbon plate ghthand upper cornes The best resue Of
.py shot hitherto delivered at armor plate WAS pre-
s.nted In this round The prctecte point apparently en-
tered Ave inches spreading in the point OF impact ana
Welding in the plate. There lie some oouo' 'nA' INC e
even penetrated 70 FIVE nches IL may NAVE spi"'feO
on the face Of the plate.
Tn. close OF the second series Of shots did not find
N. pstos materially altered as to relative value The
least penetration In the Bethlehem plate was OFFSET
In a measure by the irregulsrity noted between tho
left and right halves, the latter portion alone Show
ns the normal effect Of Harvey treatment. The other
Harvey plate-low-ca carbon Carnegie-dd not develop
N. quality natural to expect from the special treat
m.nt The untreated high carbon plate showed less
r.ne,ration than the Harveyized low-carbon plate
which had the virtue, so far, OF greatest unHorhS'
withal its greatest penetration.
Roynd No Third shot against the Carnegie hgh-car
bon plate lower lefthand corner. The proectne pehe
uabd twelve inches and rebomded in fragments one
through crack extending from point Of impact TO the Tot
tom edge, developed.
Found No. S-Thrd shot against the Carnegie harvey
lOw.carbon plate. lower eft-hand corner The pene
usron was o. inches The shell rebeunded ity ieet am
vas shortened by the contact 2 inches The rotating
hand usually drops from shell as soon as its mission
Of giving the proectle the motion OF the rnng Is com
pleted, remained in place
Round No o-Thiid shot against the Bethlehem high
plate lower lefhand corner The she'll penetrated
l24 inches and picked up intact at the mouth Oh e
gun; there were eight small hsr-lne radial cracks
The third series of shots showed the untreated plate
10 be the first 10 crack, but to show less penetration
on the latest shots than the corresponding pate winch
had been treated The last round against the treated
bw-carbon plate less penetratlve thah limit
against either of the others, and. assuming that the
precules possessed equal merit, the lower lefthand
corner Of the plate was the most invulnerable portion
far attacked and the first to indicate III any
degree the result of Its treatment
Round No 1o-Eourth shot against the Carnegie high
carbon pat4 lower ri ghhand corner The prOectie pen
eistd 1l inches and rebOunded TO the sandbags' unl
juid; there were two cracks added n the one OF te
previous shot from the third point Of ml act upward 10 inc
Sde and 10 the fourth point.
Round No. 1l-Fourth shot against the Carnegie low
carbon treated plate lower righhand ccrTer The pro-
e penetrated and remained in the plate the base beis
ufee inches from face that the total penetration
nU; have been twenty inches. There was slight bulge
NE hin which ehipped. but there was no injury
cher than natural and insignificant rsdial croeks.
Eouhd No 12-Fourh shot against the Bethlehem treated
stAsbon plate lower rigthand corner. The results Of
ne oad shot at this plate exactly reproduced thc
eunase penetration Of shell in this instance being -
inches The body Of the proiectile was broken In rag
hents ere was no fringe 10 crack, and the bolts and