New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1883-09-13
THEODORE D. WILSON
Chief Constructor. L. ). ~, Chez oi SuieAA
SPECIFICATIONS FOR THE SUPPLY or
CONPOIN d ARMOR PLATES FOR THE III EHN>
AKMOR OF THE U. ;. MONITOR
MIANrON OMOH.
sfato NJ ba following platcsl
TURRET PLATES.


TURRET PLATES
Two mort plates a inches thick. OF the size and
the plans me potts 70 oe m ~ nnishd IA
10 leave macsin OF At ieasI NAH al 'AN" 'A Wv
pates II u inches thick Of size ana shane a0.S S,s
the nlans one plate q inches thick, OF SIC ~ ,s,s
hn an the p'ans two piOt-h0u covers inches 'S'
SIG sd sPf pc houses 70 be in one or pis ,V
% a cone shown on the plans me pI.a, Of IN
Junction be vertical, and At risht angles !" 'u0
The Whole supply fashioned ard fitted o. TIE &c ss
Set dyng the thickness OF no lghtest plate n,S 10
sseneg al the works d contractor aad carefully ''
as TO thickness and form before being @ al tho quality
The D oporton OF stesl and wrong hi hoD' sna INV
to be left. 10 the contractor. al uniformity
the whole loo OF pat must exhibit prAe'i'A'
chemical and physical cha aeteristcs ,..e from ese,
10 ascertain these points thee pua % nnensTmenl al
nlate lin the presence ageat OF the ~
humber OF test specimens from such positions
may directed these wa es es ~ steel pats uusI nm
differ than tenth q one PIX ecu. than 25co0
ma.s he @m9 Tan % S The that SHOW
centAges of carbon above the mean must INV
photus above tnG NJ M ase exceed fourtenths Of ono "
Se physical characteristics OF steel from sS
positions IN the plates must not v o more than Ave =
cent These tests viii DO made Al tue e'p -
msst rea b oy ase ny ached one out
will be sec By the Department ss G I ,iIe si ct
poGS% 9er by the his own
place may be directed W tne ans will be farnsI
backed Joined and boted As sa0"l Te,psctss sscus
tha actual turIet ana IesohOAns -
thereof -, ar-,tv hr,red or supportc1;; ..n,af
a. Ear near iLs edges. G must BIO saDJee'oa W
test1t pp,MARY TESTS, -
~ o.,s must receive 81 Its centre Dio". eparnen
no moi of such quality aud design - ..ds and ~
INC 49, The weight shot 10 De ovv Pewt 10 ~
velocity 500 feet per second INC ~ the plate
nt Of impact The point or froas eese part ~
INC o get through the plate neither must ~ ks effect
,a h. del ached from the backing, W re~s'" y"
the shot arcoNDARy TESTS. -
NJ tho three portions shown on the Pea teal
a, 20 he delivered upon target ey me ssnk
=, ouSIiiy design amt weight as sforeineha'
yyeociy 70 1873 feet per second tangent TO bs -
, ~ the Mate at the point Of impact or a. n mot
ths Den.rtinen ALL OF these nth the noJ
d ~ - 10 poin It's Al any ~ be
mai ths total energy OF I'm
q ,be rstIo OF ihs OF the angie OF nv be -
Under those secondary tests inc 'As IN A
s greater than ave sSuss s sxpsdscss
oe s1rInned or shaken on by the enu "a bsckI
sshr sha any part OF the plate i@ll he sccepssa
The iest. o ate only need be delivered 'e' . ~
OF ihe ot h. .ssu that tho Department :nsaa frSS
win 70 y, cnt one OF the large plates uoI sssh
S psn one Of the Iurrets will contain TWO pA' -
pspstment 10 to have the right 70 every
,rsnsctors al Tie works. who SHAH % p<fS
20, ,or ~ aminins Inc raw material and "iSAo''As
he process ,.-,...,. may ne mads ~ INV -
Gsns"lefe' ~ '"' THEODORE u W., pusSso |
,Chst csssuuetsr. " n"