ADNDING AND IMPROVING THE STRERING POWER OF SCREW STEAMERS
Year: 1874

page_text: LETTERS PATENT to Victor Lutschaunig, of Trieste, in the Empire of
Austria, Professor of Naval Architecture, for the Invention of
6 ADNDING AND IMPROVING THE STRERING POWER OF SCREW STEAMERS.”
Scaled the 11th September 1874, and dated the 23rd March 1874.
PROVISIONAL SPECIFICATION left by the said Victor Lutschaunig at'
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the Office of the Commissioners of Patents, with his Petition, on
the 23rd March 1874.
I, VICTOR LUTSCHAUNIG, of Trieste, in the Empire of Austria, Pro-.
fessor of Naval Architecture, do hereby declare the nature of the said.
Invention for "AUGMENTING AND IMPROVING THE STEERING POWER OF SCREW.
STEAMERS," to be as follows:-
This Invention has for its object to facilitate steering, turning, and
manoeuvring screw steam ships, and consists in making use of a screw
secured on a shaft abaft the main propeller, when such auxiliary shaft
and screw is free to move from port to starboard, and vice versa, with
the rudder.
In practice the second or steering screw shaft carried by the rudder
or its equivalent forms a continuation of the main screw shaft, and,
'
:
:

page_text: receives its rotary motion therefrom by gearing or a universal joint
(three bevel wheels are found to answer well) in such manner that it
can freely partake of the axial motion of the rudder.
It will be obvious that the use of an auxiliary screw to assist in
steering, turning, and manoeuvring screw steam ships is not affected by
the size or type of the main propeller or rudder, but is equally applicable
to all.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Victor Lutschaunig in the Great Seal Patent Office
on the 23rd September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, VICTOR
LUTSCHAUNIG, of Trieste, in the Empire of Austria, Professor of Naval
Architecture, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of March, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Victor Lutschaunig, Her special
licence that I, the said Victor Lutschaunig, my executors, administrators,
and assigns, or such others as I, the said Victor Lutschaunig, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "AUGMENTING
AND IMPROVING THE STEERING POWER OF SCREW STEAMERS," upon the condition
(amongst others) that I, the said Victor Lutschaunig, my executors or
administrators, by an instrument in writing under my, or their, or
one of their hands and seals, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Scal
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I; the said Victor Lutschaunig, do hereby
declare the nature of my said Invention, and in what manner the same

page_text: is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying
Sheet of illustrative Drawings, and to the figures and letters marked
thereon, that is to say :-
This Invention has for its object to facilitate steering, turning, and
manoeuvring screw steam ships, and consists in making use of a screw
secured on a shaft abaft the main propeller when such auxiliary shaft
and screw is free to move from port to starboard, and vice versa, with
the rudder.
In practice the second or steering screw shaft carried by the rudder
or its equivalent forms a continuation of the main screw shaft, and
receives its rotary motion therefrom by gearing or a universal joint
(three bevel wheels are found to answer well) in such manner that it
can freely partake of the axial motion of the rudder.
It will be obvious that the use of an auxiliary screw to assist in
steering, turning, and manoeuvring screw steam ships is not affected by
the size or type of the main propeller or rudder, but is equally applicable

page_text: Having now described the nature of the said Invention, and par-
ticularized the same, I would have it understood that I do not confine
myself to detail, but what I claim is,—
First. The use of an auxiliary or steering propeller secured abaft and
driven from the main propeller, when such auxiliary propeller is free to
oscillate from port to starboard, or vice versa, substantially as described
and illustrated for the purpose set forth.
Second. The construction and arrangement of the auxiliary propeller j,
main propeller b, and gearing f, g, i, substantially as described and illus-
trated for the purposes set forth.
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In witness whereof, I, the said Victor Lutschaunig, have hercunto:
set my hand and seal, the Nineteenth day of September, in
the year of our Lord One thousand eight hundred and seventy-
four.