New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1853-02-15
Marbinerp, sc.
DOWKER's IMPROVED PROPELLE

F ~
DOWKERs IMPROVED PROPELLER
I'D The following rtfcatss will show to the public
important mproy ment over the propeller nov IN use CIV
ms about the OF speed Vt side wheel steamors
Tow be- ais have the advantage of presenting their aide in
close position 10 the vessel lowed.
With great adysnage mty be applied io coastns vessels
"a IN ueed II IL to Is miles per hour.
This prope Her was applied the steamboat r. Forbes
with very satisfactory results OF which the certificates an
neheo VIII '"O"' VIZ East BosroS, Oct 20. 1859
We the undersigned hereby certify that Mr. Bowkers
Proueller applied the X H. Forbes June,
1857 and think the boat propelled with 70 her
utmost capacity she being full vessel The distance from
the Lews Wharf 20 the outer ght % milesl
p,atedy in IS minutes and the distance from Boston to
Passport Maine along tue shore route IN ~ hours wind
from the for IL hours the remainder Of
the time wind north moderate breeze sail set any
She also steamed from Portland to Boston wharf to
wharf IA ~ hours wina ~ san se' ahn the en-
gnss making 46 70 50 rey0u per minute pressure OF
steam q inches We think Mr.. Bowers propeller APP
piled to sharp vessel would give hera speed OF IA to Is
miles per hour with 10 10 90 per minute the OPP
signed GRifFiTH MORRIS, Captain.
NATHAN HOLBRO0k, Engineer.
In my opinion Mr. Bowkcrs Propeller al the speed
to the Forbes that could be obtained from her under
circunstanees she bang full model and that it will DO
found fully equal any For PARTICULARS of the do
ings OF the X b. Forbes with Mr. Bowkers Propeller,
his engineer signed CHARLES PERSON,
Treasurer and Marine Inspector
We The Undersigned, fully concur in the opinions ex.
pressed in the annexed certificates and refer the same,
signed by the Boord Of Directors o. !hs Relief Steamboat
THOMAS C. SMITH
WM. Y. PAliROrr, Directors.
ISAAC sWEETSER,
JosL BowKER IT, Esq.-Dear Sir / tLnS f,om what
Forbes with your propeller attached you have
made this step In advance, In tile history Of propeers viz
doubt that vessel may be driven TO any required speed
there icing no perrepbe slip to the propeller this the
ms1mumioT with 20 turns Of the propeller with pres
OF Is inches of steam the boilers the r. b. Forbes
propelled Il miles per hour which she Is
capable Of deins driven from her model she being full
bowed fat hooIed vessel But you have principal
improvement by obtaining great speed by 90 small
number Of eyolutous compared with the former Prop7
lers used This makes the running Of the Boat much mo
economical and much easier for the engine.
Signed. SAMUEL Il. PooK. Naval Architect.
Mr. Bowker says; II can, with confidence, recommend
Us use and peIes using viii rot be disappointed IN its
performance It's operation in the water is a.
Others is eon.tracton does press the
ward the Periphery and centrifugal force but
ia center directly parallel with the aft IN backward
forward motion, and 10 proportion 70 the revolving motve
power move the body 20 which 70 attached with less
slip than other pEOpesrs 10 the sdvanszs
sosonsy srEsd BY J. Bourne ensnesr, Of Loadon in his
work on Props yH being placed further forward
sea way ana me peculiar form Of that portion Of the stern
pres the shesse forward in sss-snd the extreme mar,
rownes OF the blades offer little obstruction resistance
""'" j. HOWARD jas soS 4se o. ssf for sewYork
The model may be seen at their oes No "a Broadway.
/ ATHES for SALE.-One Slide Lathe. with
- face plates and chicks nearly new One large Gear
Lane with side rest couple Of small Lsthea Drll
Msfhiie, SEafting aid Puies and lot Of other Toos
vii be cold cheap for cash small Slide Lathe wanted
BIZ McCREARY, No. 6 Dusr,s.i.
CODA WATER APPARATUS-For Mann.
~ taetans Drawing and Boiling Of the latest and most
sppoyed description manufactured and for SALE with ex
pOet printed directions for fs use BIZ JOHN NATrHEWs
ist~ay- col. Ath-st., " Y.
g BEISSEL's GENUINE PRIZE MEDAL
re NEEDLES. sold BY sTURS SACHS in Ne =.
Of s2per mile best quality 81 Do second quality lib
sfa4 oscoant allowed on orders of some importance
CTEAM ES!-ASHCROFTs Steam
- Cages Cor Hizh-Pressure, LowPressuse end Loco
motive Engines, for sale By
CHAs.w. COPELAND, General Agent, O. Broadway
ITO RICE GROWERS-Alot of STRONG's
fAfEST RICE HULLERs for Sale one of which
may Dc seessn operation On application to
- MORTON 4 BREMSEa,
no. III Peari-st- coz. FietehefSc
QUARTZ CRUSHING MACHINE.-The
e,tentaon Of parties interested in Quarts Crushing
Machines requested to MACHINE winch has ben erected
f ne sl1 PVT IN Operation BY steam At the Novelty Iron
"1A Inc quantity and fneness Of the WORK done has
osen tsiy taetory- Particulars can Be obtained from
Ire, W.. Broadway or BY application az the Soysky
iron "oin s. W. BULLOCK
WATER GUAGES-FABERs MAGNET.
w fC WATER GUAGES. For sals By
CHARLES W. COPELAND. 0easrL Agent
hO.st Bsosdvsy