New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1849-12-22
NEW-YORK TRIBUNE.
rss ssesu, EBsias- W hat ., 10 rVd whas 81
nay Ia. Va.

may Gtssf.~@- -
ice wsy - Vhic0 Sue advocates u tne Graz 4
notion esus,a''y gest t. 9UeAtpa o. the mower
q ,ns crsus Is enthusiastically az io'Ioxs: They
ss, iros i.Es mat there are Two points IN TIE c'
.li jescribed oy the crenA pr, osl'ed cspIo's,
were 10 loser is Or osD 20 sppied TOWARD 'ois-
tol aud lat tb0fc sio t~O otner pC.Dis IL .as
sane cir'ls called full power p5'a;s. where e. .
ersIs has 'sv.r equal n %. ieog'h, snd tat iD
sho coofse q whole revolution ,hig leverage We
res irom zero to "a maIimum length. End ~'~s
rsr.a let n pore- z loSt. they say, because -
ue oSrtcrS there q 20 steam expended, Or po0 rr
applied, al corsc lpent'y u)Ge wasted, aud q
every other POINT n the revolution the ezpelo o.
rare d stesm ia IN exact proportion &c the exte &
q The loverage-greatest where tho leverage 8
- a.sst, sEd mons ~ ell at tsS csnte-s ~ho q
thsrsi no leverage and therefore with the same
G5sa:i,y and equal pressure Of steam, ~ greater
effect oaG be produced
Ihe first observation ~o have L. make 10 q ~
there ia not oue word Of reasoning or argument ia
sttbai has been advanced r. Is nothing hu' :
mere naked o.,ripti0n u ihe INDUS 0Oersnd' II
tue crank sneiso Let us now sEs'yze this Grant
saa nhst it Las 10 10, 10 what sltion aud VII,
i.s Office snd power II Is rsid. inf Slbi9 evef
trAy nXst sad secuted 10 the ms.n shs'i q which
becomes spart itis cPafesHd upon through the la.
tefttn,on ~ equally risd AID iChesibe cJHn-ctifs
ro; khch at ono enc losing nori zoatsi engne Tor
NusrstonJ 10 attached r. the piston, the st'er 1T
wh'ch mas rootnesl and reciprocstlag motion Sup.
p.o II BE- four iee, long Whist IL lie os7dS' lever
tsei This question addressed 10 the ed'tors ~
the SctcEse Aee1 an ard 70 VIC Novelty, secot ard
AIalTa Worts. ia September last $50 No. Of ms
PRESENT volume 81 that psPsr) u Ass noI yss teen s-
rSered We viii snswsr a Hour Ans~lr b. uoI GO e
reg. WI dosire then, &, loiui ut tho error.
is'vo feet without the angle lard the io,. tier e.
derived, % the connecting rod deduct sEa and Il s
e,ea ICES ,1aA foot. Nov Tor the proc, II snoo,
and simple. heicit.s 1rere being two points IN tre
circle de,erhed ~ tbe crank plo whore there is sdnf
ted 70 be leverage and other pous ia the c1ursc
vi ne sme circle where Is hss Leverage equsl 20 10
enga md the poin.s Of leverage and leverage being
equs ia number-two esoh-and squi disisntfroD esch
0ihof follows plain that the hall OF four IS two,
10, the cvgass 10 enc bali the max mum, yiz TWO
,ss Le; Il b borne In mind, In this connection h't
nahsr the pretsdre ct the steam OF the quantity eV
pended any every part OF ihs revolution have any
lhus s. do with the ltp0Sss al the CRANK II Ia true
stat st tho fill power pon,s you have greser evasgs
sld also eypeod steam but the sres,er evorn.e
g. cue, not 20 the greater prsssur" expenditure
tie sss but 20 ~ vtdiirs post'i3p tn connect
&c snd pston do!tVS aud the shsft icisa tp7l. TIE
,ssprs az stesm ia the ~ al points of the
a,on being much 10 tho square inch surface Of ate
sylndsr.heso without roerence - the poiition aut
leverage of t0e crsas
But crank lOur feet long, used 10 car steSn on
sces ha nos even two Zee, svofsgs leverage - The
angle formed by tue connecting rOd aud oFsUs - !, =
poiat Of greatest power Leverage ol the latter 10 ii
be deducted from ths Ihst Hnount 10 10 pTog0rt. y
the ength % The connecting rcd usedtoe longer Il
y the less acute Tia angle aud the less loss % cours'
sskns oonDsos:n. rod thee suoes the length Of tho
stroke and The loo. 81 the Poni Of greatest leverage Vt
tai osank 10 one siStn. Th's upon ctsnk tour &c {
iorg eight inches snd this iesyaG only oty uon's
t,I tbs extreme ToiA r. hv~ags u The ersus Or.
bali OF IBIS, s ,wonty iGcheF which is eli Of she ogss
leverage Of c crank four feet i5gs
Having nov srsmined sod ansySeo Ins sc.nk, AID
e0ene6 Sc p1~eEs ans mode OF soton Will 70
r0r compare iis ethcisr0y sd economy ='sf another
mechanical agent equally ysllk0owD, ana iE general
Use eetove the steam engine vss tbousht o..