The Express.
London, England, 1852-10-11 00:00:00

X RUDDER AND
SCREW PRO-
PELLER.

he above title Captain E. J. Carpenter, •
nitrated au imitation in the art of propelling
grow,
which bids fair to constitute a now era in
4WD. V. reels propelled by screw are indeed
novelty ; but the peculiarity of Captain Car-
aeration n, that two screws are made ass of, I
on., which greatly increases the speed, while
misled by two rudders, which in an equal de-
.rs the cootrul obtained over her. Is order to •
o ~..it. Ordain Carpenter builds his vowels •
.eciple dilf tint from auy that has
• olopted. From the Item to the mid- •
o the keel is laid down the same as in other
from the mid.hips towards the stern the keel
Limes al. :in it is log in the water line. Met in
. kW. •no new keels start from the aid-
es continued in parallel lines to the stern, the
toren thi m varying, of course, according to the
vett. Each of these keels is fitted with a stern-
r, and between the keel and the stet impost f
in which the Strew work., ae-
the common principle. One screw propeller
ire a ivoinV of the other, so as to allow
to work, and yet so mar that, when both
ties, they constitute, in bat, me propeller
li power. Ihe two redden are so eon-
Aber that they can be steered by one person
e the single rudder on the old principle ;
a slight allergies in the machinery, en*
r. .a one of the rudders can be unshipped at
ul the Newel worked with owe only. By this
Ite the inventor calculates on obtaining wetr=
speed, which may obviously be es
ol.' action of the screws, but also en having
~.nerd over the way of the view! by the
le double redder, and from esperimeate ob-
i a working model, it appeared that • vessel
on this priuciple would turn completely
the, space of her own length and a half,
Themes steam baste usually require a circle
let of which is between Ave and sin times
len:th. in which to tarn completely resod
A.? circumstances. The form of the 1..8-
.4w gate tin of all dead water, which hes
o afoot impediment to the action of the strew;
oath of the Te... 1 and stern, which is rendered
by the double keel, gives an opportunity for
stemma strength to that part of the ship where
wasted in a screw steam vessel, at the some time
t propped op, as it were, oa the two crutches of
r keel. she will be less likely to roll in the water.
°gamy has now occurred which will glee
arpenter the mesas of showing the idiom-
his iwrentien os a ...ale which will probably
wed as decisive. t'aptain Leyland has vas-
e trader for his yacht, to be built soil fitted
Wain Carps titer's principle, and the little
ow in course of can't' citron at Mr. Green's
oral at Orchard Howe, Blackwell. At present
'tnicWork is lei I down, so that all who are curlews
att• r. have an admirable opportunity of seeing
e. as it were, of the vessel, and of ascertaining kw
I not only the p. cellar shale of the vessels bat
aordinary stn meth which is capahle of helm
im-
.htp. htit upon this principle, as well as the
pont of gowsze that is obtained cempared with
on the ordinary prioriple. The mewl is to be
o schooner. forte screws eau be removed at
mil the trader used entirely se a sailing
Kra to for ready for sea in about a fortnight,
nMy for sea will Metal's' siege much atten-
c tenth nun interested in the principles of ship
oil steam cavitation.