The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1864-04-22
rur DISASTER on the cHEsARoo.
Sscut,u~ alton ~ shs Invesstgatasn be-
Tore Coroner Norris and Jury.

Ccutiu~ alton ~ shs Invesstgatssn be-
fore Coroner Norris and Jury.
ne ,ay ,esssssssa al .r,s. xsess I::ss.s.' 'i's'
soss when The following evidence vas takeI-- -
Wv Wood eworn-Am chief engineer 10 the United
States Navy had general sopervscp Of The boiler on
tbe chensngothe that exploded-in connection with
se construction Of the machinery my Instructions were
n have them constructed. both material ssd work
msIss,p, 10 the most thorough manner. 10 conformity
~rh The specifications, additional 10 WHICH received
Instructions from the Secretary OF the Navy ihroueh ne
Of Contracts relation 10 tue oracing o.
81 boilers under my inspection being constructed Tor tnc
Navy Departmental reference particularly 70 Inc prac
s1g which commune 10 the local Inspector. (Wn
here letter OF instructions 10 Chef Eneinee
Theodore 7eer under whose inspection and supervision
tbs boilers Of The Chenaneo were constructed charging
aim the utmost diligence IN their
that they should he manufactured s"Voy ~ "S0o'u
~ ,ne nave moi examined lbe boilers; that IL
me business OF the local inspector 40 suu.ops STAN
would be remaining stays under seventy
ans ,hs area Of The TOP Of the she'll Of the boiler
Aundred thr,ywo square EEL or nneeen Thousand
tpches maktne Two hundred and eighty one square
inches 10 each stay the spaces were ten by eleven
inches 90 the side beng one hundred and twenty square
cbee 10 brace these boilers we're never intended 70
work over thriy Eve pounds OF pressure
nv The Coroners Il possible after boiler has endured
.ness giving way, to blow i, up With less pressure
some changes are made ~ decay and otherwse2
A. think not
IL the boilers Of the Chenapgo did bear cold water
pressure Of sixty pounds, and these used in the
ordinary way for some days. rs possible 20 blow up
with less than sixty pounds presesre9 A. Not with the
conditions under which they sustained sixty pounds
pressure.
o. According 70 your calculation, about how much
pressure per square inch would carry away tho stays
II The iron OF which the stays made capable
Il sustaining Of fifty thousand pounds per inch
OF they should bear safely sixth Of
which would be 333 49, l00ths pounds they could
Ants safely and might probably bear fifty thousand
them yield, after the maximum degree Of tension
they capable OF sustaining reached
@ The brace being brought up breaking point,
&c you think II would continue TO bear that strainY
A. Not after absolute yielding had taken place.
G. Do you think the rveted tug 70 the side Of the tube
box was adequate to sustain tho strain from The four
points the roof OF the boer2 The relative strain
these several points OF contact this brace far
resisting the strain impaired TO them will be each
ether thor various sections the OF
the lower brace, which yielded, is inferior
NE sections in the upper attachments.
e. 10 you think the portion the attached
70 the side OF the tube boxes adequate 10 sustain the
amount OF slraiu rna ne renss Of attachments above
would SUSTAIN A. think not
y 10 You not think that an arch stay, riveted at
s~o poots would have beou much stronger II would
= stronger IN preper.'on 70 any increased section
q Looking AZ this rupture, would you IN future recon-
neud people not TO such stay as the one IN quee
ssoo2 A. should recommend modification in the
method Of oracng 81 this particular point however al
thirty pounds ing pressure should think this
Rceteod reisble.
o Did the rupture n your opinion precede or succeed
etays yielded instant, or, perhaps, inspprecabe
amount Of time preceding the rupture Of the she'll
O. the fracture OF the stays preceded the rupture IN
ss roof. does it not follow that the rupture the roof
vas not the OF the explosion A. The OF the
explosion, IN my opinion, was from pressure nccumu
ted Ia the boiler greater than what could be sustained
by the stays and bracng and Of necessity the rupture
was the result as before stated the stays yielded
Dentariy preceding the rupture in the shell.
O. From your general experience Of the Martin boiler
with vertical tubes and FIRE outside OF the tubes
what il known ss The Monitor boiler with horzaptal
tubes and fire inside OF the tubes opinion the
boiler any more dangerous than the otherf A 10
properly constructed boilers Of either type should
sA tIa Ar m in nnna1 ynon
s Wilkus Craeg sworn-Am second assistant enep.
United States Navy ordered 20 supern,end the
testing Of The boilers the Chenango. general
perntendant rather government inspector inspected
ahem personally not prepared tosay how much
gosads they we're tested twice the first time had
gauge placed The top OF the steam chest il being usual
70 place at the bottom, but made The necessary al
for the weight OF the they answered
requirements, ana reported favoraby 10 the Navy De
Vartment
To the y-Examned the boilers today, and ind
they braced according the specifications the
traces rom each piece OF iron were Fastened TO one lug
tube box, instead Of wougs each tube bcx
q the hug riveied has been, the boiler had
equal 10 the strength OF two Tugs, the strength would
cave been nearly equal required such brace
ahe exhibited is not equal 10 The strength OF the
Myers Coryen eworu-Res,de q, No. 800 Eas, six.
secnth street New ork. Rm machinst and eng
the employ Of the Morgan Iron Works at the time
those boilers constructed had the
aud charge OF The details Of the work. Mr. Craig
government engineer superntended the testing OF The
boilers by hydraulic pressure they suhecte 10
Witnessed ev the government engineers them few
ttmes with steam working al tbe dock thought them
ample sustain three tsmee the required pressure
which, I think thirty Eve pounds
To tho Jury-Ihe greatest pressure thirty eight
about twenty-five pounds OF mercury 10 the gauge DO
that the mercury blown Out Of the gauge,
have not seen il since The explosion.
Henry Mason sworb-Reside at No 70 Sammel
street New York machinsi and engineer by occu.
patton charge ~ the of the CheDango 10 the
hours trial occasionally bad good deal q
roube 10 keeping up water; mean every few hours
the worked out OF the boiler I does
70 all new boilers sometimes would the third OF
cylinder Of water II discharged SO heavily al times
the momentum or the engine The water weut
INTO the condenser thence the Under an from there
overheard the discharge sometimes would be naf
ahe OF the DUMP aud then Il would not discharge
again three hours the water struck the piston
The deficiency made up by salt water communication
from salt part Of tue condenser 10 the fresh
part, burned about eighteen tons Of coal 10
swenty tour hours the trial the engine made about
eight and half revolutions minute. with pressure
81 twenty ave pounds 10 the square inch indicator Ola
drauehtsman 10 tho Morgan Iron WORKS i oiled the
q full until 1t ran over after we Ill the
on the scale consider boiler sale ordinary
hands the heating surface great for the quantity
u water contaued In tue boiler we bad TO blow on SAT-
water occasionaily the engine the surface con.
the object Of the condenser 70 transform al the
and return 10 the boiler again Tbs
condenser accomplished the object 70 certain exient the
seaming Of boiler 70 GIL the cylinder one b I'd
every stroke sufficient TO stop the engine completely
vsuId continue 20 work the engine i the water,
caused ny foaming INTO the cylinder uch with
"a the range OF stroke board the Cnenapco
saturday Afternoon and looked at the upper part q, the
shell; did Il sufficiently enable form
opinion OF the explos did not look
n the mercury gauge, engineer have thought the
explosion caused by insulcieucv Of water the
boiler, which might have been caused by water being
discharged into the condenser from the boiler another
rs that the engineer might have thought that he
mad feed water whilst the leakage the boiler would
waste portion by passing overheard skul and aten-
sive queer would not have been likely 10 have been
deceived tDis boiler worked or water than any
kave lad Knowledge OF OF late for the government
service u would be difficult 10 keep boiler that worked
water like the boiler question supplied under
such circumstances the dsnger " explosion would
be great cannot say that that the cause
Of tho explosion although that is my impression my
spuioU w martin boiler Is not safe boiler wtn
horizontal tubes the glass gauge would ncieae that
foaming was taking place a good engineer viii aways
30 able 10 tell when his boiler 10 toamng
WIN. N. Wallace sworn-Reside at No n Green ave.
nue. merchant; am surviving partner 81 the
SYm OF Wallace Buckley, furnished the ROO fer tho