The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1871-08-05

.c.rs wn,cn nensd observsdm posr IN repy to an
where there was shell OF skin iron about sXteensh Of
o experience engineer is there any test -I
ce s TEST Tor ssce,aning the existence Of these
Tue upper ana lower plates and could not have
Al what pressure could the boiler thus rp,ured have
lower pressure than tina. stated in the cehcae
the sheet; do know how far it extended ''A
- Are yoy satisfied there onesixeensh OF
we ousn ae A. As near as can Judge did not measure
mere might be In places more and in places somewhat
coon IRON?
. A. cannot say whether good iron bad ron but
q How much pressure would that one sx.eenth inch
should Withstand tensile strain Of eocos pounds in THIS
sss the w0oe put to be sure at pounds say
Oh w SSiT.y pounds % %h.,,, .u,
a6edI practical engineer, employed by Williams.
Burg Ferry Company Their chief superin'endent have
Y State what you think the OF the explosion.
the scarcity my thinking being
me iron shows no inecaon Of was on the top OF the
ploded also observeda fracture of the longitudinal
and the boat lay with her hull out that the
siarboard side;
seemed about fifteen inches in length bn did right
through the iron the explosion might have there
builders good quality Of iron il is medium iron and
should bear tensile strain ran Of 5000 pounds
would stand higher strain than that the best iron Is
used Io 10 make Soers A. have never had any boilers
made under supeniendence Of inferior quality TO
medium have heard Of such iron being qse but tia. was
boiler the iron IN this boiler was al hrst alb ut oneqarter
$1,000 pounds If there h the boiler was
party ne boiler would be stronger ransyerssy
sheet in this instance
thai Kind would bear crosswse The sheet A. It ought to
stand about half as much ss the tensile strain probably
being ryeed but OF course depends greatly upon the num-
veeiGhihs of an diameter about one and three
inches apart that would weaken the iron about
Q. From the appearance of that boiler cond,-
HOW MUCH pRrssunE
have e S POUNDS
steam would not have had any hesitation in putting
prefer to have done 20, cautious man.
RS Sa ha that Under wSnd %
Nh Sss:si Is s:sR perhaps the last '1s"
xs n mas hn thirty when
sepposins Tur eAuer
,ss Ss 'A
sss Isl n wI s - asn s q he way,
sa as:y s: ont q ,s the
ana uns we're we s ssGe
to that they agreed with the test gauge in III cases
VI oe gauges are out II made note and the gauges
g How far have found such gauges you use
On ou boat to be out of the when tested by the United
SKATES nn last year We found them
than really had but there have been where they
ss,s shown dive or six pounds less than what the test gauge
O. How often have you discovered such errors, A. Most
every have been told though that the inspection
going on has shown my assistants have attended to m
O. Have you any
the time running boat A: All judge
are to the 1 sssv this to sS the
may up to twen,y;.sysn pounds; that DO
forty pounds and are allowed o.
by The n of the safety valves
measured myself and have found them correct
BOILERS ARE TESTED
to thirty pounds on the certificate Of the inspector A.
Yes, but is only twenty pounds
or at most @ pounds after that the main safety
another government vavclocked up to blow off
@ Have you in experience noticed any of these
government safety valves to 6!ow have noticed them
o Why should they blow when you only allow your steam
lion put on Of to test
found Of them did operate properly stuck
sionay liable have these people instfne.
1es haTe 1ua Inc % aa 10 S
stick had noticed that the valve in one of our
ton This morning and instructed assistant engineer
bent considerably; possible that the engineer fireman
Lad bent in raising il some time the bend below
safety valve board of boas was that the
the men that the gauge indicated nifty pounds and YET il dd
NOT blow on we had been away attending TO something at
any ..xY eop, LOOK WHERE THE STEAM 1s"
had TO take that out and make valve for II with
taper and less bearing; sometimes used iron
with the boiler; the majority of copper pipes
likely 10 be obstructed inside
e DO you consider safe to use .as1 pipes No.
the steam made give me good safety valve.
boats attached directly boiler Indicated
ss Si the the %o
there has not the distance to travel supposing you
Of the boat and the sSsr
Sss S be know 81 NO
should be difference indication Of boiler gauges
san. P head Of WIN inc anu having 'he
O. Surprising an engineer broke your nstruc-
tons after you had told him what steam to allow? A.
DISCHARGE A MAN IF Hn DIsoBEYEp
order Of that klnd knew case six where
Charged but IL has never been done since If man had
dome that to certainly have discharged him
suppose the engineer boats has "A right lift the
safety time to prevent them from sticking be
lie responsible, aud must use his own Judgment in that mat
THE CRACK IN THE BOILER.
q. Could the crack the westheds boiler have been
covered when IL was tesiedy a. The only mean. that
sledse hammer and sabcc,ed ii to bammerins ali over
there possible means of seeing either from
INSPECTORS TESTIMONY.
Joseph Parry local inspector of steamboats, for the dis
OF Philadelphia then he said-1 have been
inspector for three and engineer for thirty
years. Ihave examined the boiler board of the
boat Westned the boiler Az lies at pcsent does not give
Indications IL II that caused
the explosion; could rot examine exactly the fractures
made explosion all show good iron in every part,
and of the ordinary thickness.
O. How thick itg A. think the iron originally No.
had the OF having become thin
had been the BOILER; the generally had
the appearance Of having OF the regular thickness in
boilers OF that kind there nothing indicate the
of that boiler there boilers running IN the district
Of older than that that
years old that carry steam; then there
large running that oder believe this be feet
In diameter; have fourteen feet In diameter
forty five pounds OF steam.
O. How much steam do yon generally allow ? A. One
ten-foot shell generally allowed thirty pounds the
general thickness OF iron put into tho
SHELLS BOILERS FOR FERRyBoATe
sixeenths and for that for quarter Of