The pilot and transcript. [volume] (Baltimore, Md.) 1840-1841, 1840-11-27

GREAT PROPOSED IMPROVEMENT N NAvtGA'
uoN.-Messrs. Russell and Glover Of New Y DIRK,
known as possessing great skill and experience
in all matters relating to navigation, are no"
endeavorng to unite in their fass sailing packet
ship Clarion, by applying Captain Eriesson'S
TransVersal Ship Propeller, the two forces OF
wind and steam, 50 that they can act as occa-
sion may require. The Propeller works entire
| " under water 1t is described consisting of
two iron hoops, to which series of iron plates
of winding shape are attached, -these plates
are hxed at an angie of about As degrees, and
when caused to revolve, proFel the ship BY act
ing o5liquely against the water, somewhat on
the principle of sculling. The iron hoops, with
! their winding plates or paddles, are attached to
shafts passing through the run Of the ship, one
on each side ofthe stern post.
.'The steam machinery employed to turn the
shafts and propelless, is liked in the run of the
ship, abaft the mizzen-mast, under the lower
deck, so that scarcely aay stowage room is ta-
ken away.
The engines building for the Clarion will be
equal to 10 horse power. The total weight Of
the whole machinery will not exceed 20 TONS
These engines arc of a remarkably simple con-
struction; the crank shafts working close to the
bottom of the ship, the heavy framework, in
dispensable in ordinary marine engines, il alto
gether dispensed with.
A powerful pump will also be attached TO the
engines OF the Clarion, which may be used eth
er as FIRE engine or for pumping the ship.
The consumption of fuel will not exceed four
tons in twenty-four hours, owing to the econo-
mical mode of working the steam by expansion
which this propeller admits of, at all times,
whether the sea Is rough or smooth blower
being employed, the CHIMNEY with be very small,
standing only twelve feet above deck.
Whenever the wind is favorable, it is intend
cd not to use the steam power, in which case The
propeller shafts viii be detached from the en-
gines, that beng effected by simply drawing two
bolts An accurate estimate of the resistance
offered by the prOpelless in revolving freely by
the motion of the ship, has established the fact
that their drag, retarding effect, viii not d.
! mnish the speed of the ship more than 5 pc
1 cent whenever that speed exceeds 10 miles pc
E hour
The great advantage to ship navigation whicl
the Propeller must BRING, if successfully applied
can hardly be calculated. A New York paper
thus enumerates few of them:"On a lee-sho-e,
or in current, such ship is always safe; in
moderate head winds or Gains she proceeds stead
iIy towards her destination; if she springs aleak
there is the untiring steam power to keep her
dry, with a force exceeding one hundred men:
ifs,ruck by lightning, or her cargo ignitcd by
spontaneous combustion, there IS the same ener
cetic power to cHtihgutsh the flames by throw
ing unlimited quantity Of water, but which il
pumped back again soon as it finds its way In
to the hilge. On making land, a ship provided
with this propeller does not require the aid Of
n stoam-tug, and even during The most severe win
e ter, hei propeliDg machinery will remain equal
" efficient, being placed several feet below wa
ter line, and thereby protected against ice, ant
i freed from an impeachment which renders com
:. men paddle wheels quito useless during a sever
n winter. To this may be ADDED that the pursui
a a Of hostile man ef war or pirate, may be di
# regarded by a captain who has the good forum
k Recommending ship possessing s'lch Powerft
y means for effecting a prompt escape, indePeI
e dent of the capricious agency Of the wind
+. ship provided with the Transrersal Shi
Propeller, will perform more duty at less c,
e pense, than any other vessel She can AWAY
e take advantage ofthe winds, and remain unaffet
|, ted by them when they are adverse or subside