The St. Louis Republic. [volume] (St. Louis, Mo.) 1888-1919, 1900-07-22

| about Ia start building his first vessel in
Minneapolis. The priCoipie al the invention
j. Il combination ~ the ingredients 81 raii-
road an! marine construction: Mr.: SAWYER
writes the following account of his Invention
and plans:
Tine principle / apply in my invention IS
gineers and shiphuiliays-the screw propel-
Ter. ~ used to-day the screw propeller -
not true screw, hut simply q TAR rrprt-en
ta:ion Of one. Screw propellers generally
aye made with thr.o or four Hat arms or
paddles. which Represent me threads "r
flanges Of a screw. The water IN RELATION
To these represents the nut. But with this
class of propeller IL il utterly Impossible ~
attain n speed Of over eighty reN,duiloHs
per minute. over this speed. the dlSinteGIa-
ton nf the nut takes place the propeller
flies around. throwing off tn" water aud
forming a vortex about Il. with the result
that the vessel comes 70 4 standstiil. regard
less of the fact that the engines are pound
ing out ninety or more revolutions a nlinu<e-
Il use the screw pyinc.pl". but l APP
together with I perfectly formed ami bal
auced hull | believe / have produced a
vessel that nils the bin for speed, -
When afioat my boz, r I,ss9 sS., ' me
dry dock 4, looks Ike gigantic cigar.
provided with a large funnel al either END:
serves as coming 'cwrr ar ihloihouse ana
srnoke=;aCk and ven;i!atinc shafts.
Between these tunnels. ana complete
IL surrounding .he main hull. or body. =
;I. rropaIler shell. or screw. This re-
S,-I,-;rs sbaIi or screw is made to re-
ynlv,. about the huh or ball-hcariusS when
travel in :. grooVei collar or band SCTe"ei
to the outer surface Of the huIl mar tIiS
funneIs ON the ends Of the screw sheil
are heavy Nat leather rings. "ncn Or
.d.uiei TO engaE. three or more thre'tiS
o,. t;npces On the outer radiai faces OF ta@
collars on she hull. Together Win sum
Gent supply Of OIL applied .roTn WITHIN M
hull | secure perfFt.IN siho'iH-' "''"'''s
and water-tiGht connection , -.
Secured on the inner surface. anu a.
the central portion Of the fev"lN1ls shtii II;
an, steel ribs rr tracks cp;Sfrurt"n 81
IL .rba engines are carried within the
hull or body a; its lowest portion TN
acor of the hull is slotted a, me p pr
over rh.. tracks To- allow the driving "h"'iS
az IN. engine TO engage the track. OF u"S-
Power then l. transmitted 10 thr s.i'W
she'll 10y friction. This l. me principe a.
the locumotiv. and rails ftNt:9eu' 49,,
tho engine stands fast ana the rams ,Idntl
forward. or rather. the prlnciiirr "i ~. N
testing platform used IN almost d" ~ 'hs
.ahoy, the outer surface OF the screw,
shell arr. wound two or thf"'- ~'''.i
ranG,s - n@ ~ ;h 'nJ shell THIS gives me a
perfect screw propeller. ana one ,nst -
always entering solid wafer. Mhlch -
r.r INC case with IN: rear prcp-iirf
ii.L has :, ztrrlgyl. with broken and
eddi,d water. made 50 h' the nun III
front -: II a., o,,,. ~,
49,. f,,rtinn ~ ~. screw smell which
ends above the water lire by a shell or
hack This shell l. made 20 p'oN'uS ~ az
upper deck aTI promenade. ana IS uStu VI
~. as the decks of all vessels are used
u claim . high rate Of speed Tor TINS
tvp. of vessel from the fact tnat IN 'hFtr
r.tul,Itions Of the screw shell Inc hoa,
trayais ore length ahead. and the si|ei
a. Ii,ni+a,g only by the engines and ma
terial in its makeup.
one for some time and have always fonnf
il on top and ready for business AT pres
.nt am building one FOR pleasure. tapa"'e
ing a
the promenade deck which ! Intend put
ling ON the lakes near our city.