New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1851-08-04
The New Motive PaYfr.
TSAs ES,;rr II Tae TrIszAs

common reader and. iaasnuch As me rncchaalcs
structures are not yCt completed 81 that SSenuciS.
OF the results enurc.y legitimate Win those whs
not thoroughly aware OF the philosophy involved
and the experiments hich have been already made
| wish 20 commit you g nothing ~ Your ,lmias
his communication. amt perhaps other ugon me
subject. and shall therefore write over my own se.
nature. The patents Tor The invention have been Ss
cured IN Europe a, ~ OC, y % some SiS thousand
dollars already expended. and Sufcien. steps have
been taken 10 render D, slie IN tbs counirg There
=. therefore no secret made nov either O., III phil
C>ophy or projected mechanism
Nr Nathan SAWYER, az Baltimore a. present q
tbs city, ailer comp eiing discoveries ADJ lOns
ard successful ccuf>t ot experiments upon censrfl-
gal foTcc demonstration o. the principles dl>,o,
cred, aSccrtanea that Mr.. J Stuar. Geynne o.
Newly orS, had come % similar CONCLUSIONS and hai
conducted independently similar course Of sspsr-
mcntS The two m, eniOrs were thus induced b.
Ugtc their inventions. and hence ,hc TILE. >azyefA
GWynuC's Pressure Engine The arrancerseni ioy
bringing cut the invention IN Europe beng assumed
py Mr. OwNnnc, Mi sawyer - now gong forward
with more spcCllc series Of experiments here. for
the purpose Of settling ali The mechanical conditions
for obtaining the most perfect Application ct the new
power on viii perceive that SPEAK 81 The mat.
ter as OF actual invention, ~ 2oheNe = 10 D..
Mr. Sawyer considers that he ha>, aitcf cighi years
of 'ral thoroughly tested m practice every Qoni IN
VOWED m the proposed machinery. Sui. rs stated
before the machine tSo, remains % be oUl,i. There
are mechanical reasons, which Will be rcatli, under
stood by the practical mechanic on an eNlmma;os
OF the subject. agaln>, attempting sinai working
model. anu Mir sawyer Is determined. a. al events.
not 10 bring the principles intO ds.epuit ~ any fall
ure IN the mechanics such IS would be i<rlN IL o.
cur IN too small structure Tie extends m the
meantime, an invitation 90 men o. science. mcch,n-
lC>. the owners OF steamboats, and othes machinery,
and hre, 10 all persons interested m So subjects,
to examine the prlncipcs 81 philosophy announced
bN him. together with the ditgramS. models, and pto-
posed NEE hanlcal arrangements OF ms engine. Nhch
ne Will be pleased to exhibit and explain A. ne oie
cf the Company, No. 500 Broadway.
propose. therefore. 70 present tO the public DIS
frntt statement " the Wv observed b.
principles OF Natural Philosophy announ, ed hy NJ.
SAWYER promising tac advice TO Sct,n;,a, men Mo
may undertake me criticism OF The views o oC stated.
that they lay aside the assumption that Their 'am.l-
arty with textbooks leaves them nothing 90 learn.
W assume the position oi eacksrS IN ta's matter io
men of science, IN Il field of Investigation. Which
has not hitherto been trot by scicn H. explorers II
viii be lnexpedent for those who would oNeTsNn
our propositions TO commit The error oi suppoSlns
that We too speaking Tor my clients are nol equally
aware Of what there l. m the books. and o all that
mechanical science and art have hitherto accom-
pilShed by the old processes, make this preiim
nary observation to save your space. since with tea
exceptions, gentlemen having reputation for science
whose attention l. called 10 this subject hegm ev
ASSUMING. as matter OF course. that We nave made
a mistake somewhere, and that the mi>iaAe must
have resulted from our ignorance OF The ordinary
laws OF mechanics, ard hence that ., y tncu busi
ness 10 INFORM Us What these laws Hence,
again. they To- u.s. not Is learners even Tor tho
purpose Of aScertGlnng what our ideas are, but ss
teachers and venture TO affirm that there Is not
man OF science IN this e.ty who has denounced tins
mscnuon-and there are several such-Nho ran
write out any intelligent account of what is claimed
or intended by the tentOrs. The iiea seems never
to enter INTO The heads IT such gentlemen that pos
sihly NAV be quite familiar as themselves Win
all the ground they have passed over ami ,unpN thh
We may have CHANGED 10 wander into ne" h'm %
youd HE limit, OF their lentlhC explorations mere
have been dlScoycrtr, in science heretofore fef.
haps the IS not extinct One other word OF
warning namely. that our critics De cautious that
they do not commit themselves, out OF iclerencc V
Old notions, 10 any statements m relation to cen
lnlugal force and atmospheric pressure, which
simple experiments hundred times repeated de-
moIsuai. 10 be entirely erroneous We asA hrsi, 10
be- understood secondly, that the basis IA Tact and
actual experiment upon which We erect our pfofo-
stionS should likewise be understood. Under these
limitations and conditions, We invite criticism MOI
otherwise We have 10 taste nor clsnre ioT DIS
cussing with men who viii not inform themselves
what II rs which We wish to discuss.
To return now 10 the subject IN hand. some
oight years ago occurred "a Mi sawyer that thefe
were some curious features about cntrihiga force,
which Did not seem 20 him to be accounted Tor ~
the ordinary theory Dy which u Is mlt ed up win
amt mace e part of momentum. thorough exam
nation OF The subject BY the aid Of the tooAs IhTeN
no light upon he subject In Won oi hs' nun
dred pages upon mechanical philosophy, YOU VIII
perhaps md half PAGE only upon lht ''hlfa i"f
ces Consultation With many of the llminaneS W
science IN tins country showed Inn thAt ihey kheN
quite as little upon The subject a. he knr" hm>ct.
Practical mechanics were equally ignorant oi me
laws Of THIS power. with which they had nothing 70
do except 10 fight II m Ms tendency TO otaA up lhen
machinery, which i would frequently, Unexpectedly
and dlsaStrously do Stlil, all the b0oSs contained
the one principle that cctrlfpgai j0rrs "isrsass ~
HI r0fiO ~ ne Sgoarf Of The p,ocifV that -, tha
YOU double the velocity Of the rotation 81 Nht'Lyou
fourfold the centrifugal force II wa, obvious 70
Mr. Sawyer, that n Cid not require four tunes TIE
power 10 double the O,ity Oi the wheel but even
upon his point no speclh, dni satisfactory niofm'.
ton could be- found H The books. Hence ne wy
driven 10 the conclusion that no complete sei o,
scientific experiments upon tins whole subject hsa
ever been made and thai he must explore IN. h,Iu
for himself The following are results 10 "hnn"
has been led after moi tess than one thousanh dh',
entexpcnments, cOnd ed during oght years "hi'A
he now puts before the scientific wOTl'l ana whi'h
he Is wiling 10 stand or fiji Dy fof my''n ven
ture 60 affirm, thai he now Knows more m frid'i"h ~
the whole subject OF centrifugal force thah W. Nhos
world be- side and n my OpiniOn II Would - Oc,"h'
ing IN scientific men and others hrst 10 earn o' nv"
what he knows practically AMI cxP,nm many W
fore assalllng ms positions upon tne Oasl, ~
stock Of Information, when was not suhh'fh :"
satisfy hin before be began ms inVtstiAati"hs.
Centrifugal force increases m the ratio OF the
square of the velocity. As stated IN ali the DO"ss
? The rotation which evolves OF dem"h,Hs"s the
centrifugal force Is fsrv marry doubled by dohD" me
power applied Ifthe moving power ne doubled, WIN
a slight addition 10 Overcome idiitiohai us'loh am
atmospheric resistance, Il will be found that 10 NOV
NO through the same space IN the same ine, II WI
give tw zee the former velocity
B. Consequently that under high ratios OF ysioch'
the centrifugal force must be- and actually - t~shv'
lhlny. fry and one hundred times A. great a. lh'
power applied
1 That Grcs OF prfssDre without giof.0 ~ po"T :"
sfraued and that I0r's or prsss1s "hrh Gcfs ~ ~"
dncss 1iotiOn o OrfTf0f.eF Tfsfrqtnf 10 pO'fr
5 Consequently, thai 4 centrifugal (rlt can DO
arphed 10 produce mofga, u then becomes me
chanica poUer and may be used as such
8 That centrifugal 'orce caa be- applied a. poao
~ throw ing nuid OF from center, a. when sA"i
u whlred IN pal.
= That by throwing fuii of from center ID .
vessel closed above and below, vacuum can "
created and mant iIneJ long a. the rotation y
continued. -
That centrifugal force Is no tax upon f0tAlIoh,
that n IS no retarding catse a. inertia anh hFuoN
y Consequently, mat ne power camel 5y soa
tniuga force ~ a pure dJaaf,oH u fnfsT,, f0htsx
n0thing that u.s. TIA. u 3, subtraction from inc
c,rcuar mOm,nfDa which lat, vlfh N, frict0ni T-
counts fully for all ne power applied
10 Consequently, lat centrifugal force - MIR