The New York herald., 1863-12-19

when, there'ore read his mans testimony, ana
tocnd hae no had set oal 70 swear this through
and how, important 4 was to the Navy Denart
ment, Just No" when No mach pubho asNieiy =
felt ct the conslant cuures our navy have just
such verdict as ih's Que would be- 4 they could get
u. But ] was not little surprised at the audicity OF
th's rar!cnar peee q swearing az had N my hands
couple of books pcbsted by lshcl woodono of
under tho authority Of this very Navy Dopartmeni-n
which he states the exact vauo OF this toss by
and reduces II 70 precise hguros for dlereot raes Of
pansion, according 10 tho well Known Which govern
THIS case showing MAT In some cases Shoro tho Clearance
much less than N tbs engno tho oss Il casions a
eighteen per cent OF the total fuel Bat vii read from
his book (tng neering frecedents, vol ~ .. 7s)-
d@ ssSg % we have he aae,so % 9
20 ths sG.ss % ~. 20 s ., s! Of @ syn
would have produced had no such space % have
seen nlsa ~n ., Nv & shes, expansion na cent VIII
i2ar ier LIZ H. se, 'cnI aud with al eipsnson OF eight
THIS read TO him; ana would have ihougt. it
must have arrested hlm his mad 10 self-de.
sruction Dut y produced such effect. Ho tossed IL
OF az easily as II II we're bat feathers weight "Oh yesp
faid he "tbat was my theory before tried the lake
Erle experiment IL was theory but rot pras
asked HIN u u we're net certainly true practically and
he swore on that stand that II was Hw true II is
that all the world such az be Is stand in oead
OF good memory lie forgotten that III is very item
OF .he ossas stated hs Lake Erie report and
turned 10 report con noed that IL AT least would
paralyze the tongue that dared thus 10 defy
this selfevident ruth, Dot nsain ] mis,oos my
man Allow me 10 read to you from his large
book Up 1I3) hs report on this subject, made the
eult OF those very experiments which no had INST
refued his former calculations and had enabled him to
inform you that no smocui of clearance produced any
loss in a steam engine He thus explains it,
rhe.e remains las,iy. 10 be uoied other "a ne
Zee, Of he faai and sugpnay for eere, " s
psnson II 80, due 20 We fact that between the epd Of he
there iaesne .hs so'iss' s sses ..npr'%,s "a r ,Pe s
less the back pressure. the whole winch,
steam is used without expansion s exhausted into the
mamie enee, upon ne piston.
Then follows lab. sbowing how much that loss
"iu the case Of the experiments lake Erewhicb he
had inst sworn proved there practce-aDd
he thus conclude
An Inspection Of hns four Of the above table viii show
creases win the measure u expansion aud hoo yqs
han abom haD st,ol,
as it was in the OF the engine which be
produced no appecabe oss at a That blow should have
ieed moral OK; but II never even staggered him Let
me read the questions and answers which followed
@ Did the e,rernent at Lake Erie show what have
aa S sbo a, as ss arss. @ lot
That experiment, then. did not show III A. NO; lisa
Tnsn oO;ghsanaas ~. that ,1seT%sn 2 you do not
only as s'roo erol"@tg The actual experiment and
calculated result IN hat given distinctly sepa
rately where direct eapcimen could reach.
And yet gentlemen the face Of calculated result
one book and OF an experimental result raising "srona
probability" Of the of that calculated roeut show
ing loss OF than ten per cent from this he
had the audacy 10 swear ID such loss exists a
engine aud that too, the face Of Mr. Recder
OF his own vtne who admitted that the saving from
this would have been a least ton per cent That
is what used TO be called "swearng at . mark"
II had not known this man as have known him for
years; II had not watched his sinuous course with
astonishment and at the time with psrct admra
ton at tue audacty and mpudence with which he has
pursued this that has brought navy 10 It's
present degradaon should have been appalled, at those
things as you but knew tho and know that
those were but tribes Comparison with what yet
70 be done.
But there was stl another canse OF saving the
OF the Columbia for which the charge made by applying
tho sickes' of, entitled 20 credit, and which
also independent OF the principles Of expansion aud that
arose from this fact that the old cuon valve on the boat
simply dsmper turning Ia the steam pipeiust
a stove pige damper IS turned 10 shut Oh draft-and
which from nature must leak enormously whereas
the Sickels outorpvalve single poppe, vslvethat
s tapering conca stopper set into corresponding
boe which il lts aud upon which the steam stop
ped pressos, thus making 1t tighter and tighter the
pressure n sres,sr aud sreAier Now u plain enough
ntted said pal the old damper valve could mol be
made stcam g,t as indeed, you must see yourselves.
out too for Se Was bound 70 ses your verdict and hs
swoe that there no difference Whatever IN the tight
ncss Of valves, and that with equal workmanshir the
dstnper was tight plug. Now. sherwood is
mechanic, AMI struck blow a. such in h life.
lac m gh have been ignorant OF this simple truth which
Mr eeder good mechanic. testified to- and therefore
looked again to his book % see whether hc had writ
ten down this fact about valves therefor every man
who ever saw a steam engine work knows this OBJ.
vios sctsDd bebod as IN the case OF the cicarnnce
he has fully stated tue whole matter and tells as that
this single valve thc only one which oin be madgbt
read from page IS q his precedents-
Freedom from easae. however s from physical causes.
nj ~ The large humber o Indicted diagram tna have
examined from many eng nes o. various yp~s and proper
's;a. 'o1si 1ss1 ioss seen '"' "D''" '' "'
He then proceeds to describe The various valves in
and prepare for his destruction IN this
aud thus conciudes:-"The single poppct valve g. the
valve tho Columba) (Which IA ons hat, thin disk
b> ground tight, but II II now scarcely
ployed" Thu, proving that when he these valves
all ALIKE he knew better aud had published h,s
snowedse 10 tha world This same sub ect will become
important hereafter and pass over without further
comment.
And there stiI other cause Why fuel was saved
the Columbia by the SIcsels cgnG, which was that
by It's use the valve cutting OF the coscd very
rapidly after II began O. shut, whereas tbs Old cut
on valve closed comparatively very slowly. Again.
Mr.. Reecef, their witness. admitted thls TO be
a cause Of saving; snd again, lsberwood wss
called 70 dlseredit their o~n witosss, and 70
deny that solfevideni proposition and again, be
ready for the emergency. The loss by slow closing
Of the valve results from what s called %wfe drawing
has been forced through hole too small u the
quantity required u must lose some of t. strength 10
BY beng forced through smaller hole But sher~cod
sni that there oss of power due 20 moving
the case of steam ppo mile long and Dch IN diane
ter, through which the steam had 10 travel from the
hoir TO the engine. a. compared with pfe . the usrsl
length and sze be unbiu.hngy swore that no os o owet
would result ana tbs, tho the end Of tho pipe
you'd drive the engine Just as well IN the ordinary
for SAID be steam has no friction whereas
wster-which compared II to-he admitted there youd
he loss DE 70 tue friction q water bad but g.
turn TO h. book 70 prove him TO BE- false mi Dot snorant
from PAGE twenty Of hs large volume.
According to The well settled ia~s Of thsrmodvnames
steam, Ia overcoming force of kinf suffer
condensation For instsnos, rising in IN verrtsi
except bst OF iis own ssight vii conlensa Is will
coBdrnsc IN fypsyg fsag tsff ~ ytisr ~ rgiis.
aud from the cylinder % The oondeser aud Ia wing u.
y down ihe oTufer, supposips the osf & DO earned
By erierns power IN fsci produce ernent
in i,s PARTICLES = kinf vaDsf ,rpsfafs af
,ba.ad yoys, and consequently irsnsnust0n q heat sad
rssuinr concs nsation.
And Il follows of cocrss tha' the greater are lh. dr
eui,ics 70 be overo0ne, tho longer the dsince over
winch the steam must "ran,port nf,r" the greater will
be the Ices - ",aecA1nt al Jouer" and the les will 70
main 20 be used for other purpose N the cni. II
not true, however 80 he gnornuty suppr-es that The
seam II ooudensed IN ihus losing ~ force % only yes
its pressure or tensqn but rsnaut steam al the sams
uue.s cooled by external radiation does uOt become
water.
nov approach the great qusst0n the imfafta' ca |
~ which brought me- hero-a question wh0s mag |
Dt1f. N less than N include i, cru |
selueuccs snf IT. decison-not ~ you Gentlemen. 4
bot by tue perSons actus Ia bclah q the suveru- i
~ the tnited -tlies-ths srcieuey of entire
navy tbs, greet q Dur public servics u.on ahsh,
struggle for nat utl estence above All othfrs
nrftrey ior safsiy sId IN the supefpfhy u sh4ch