IMPROVEMENTS IN APparatus FOR STEERING SHIPS
Year: 1872

page_text: LETTERS PATENT to Lindsay Ogilvie, of No. 5; Lime Street Square, in
the City of London, for the Invention of "IMPROVEMENTS IN APparatus
FOR STEERING SHIPS."-A communication from abroad by Christian
Solidt Ogilvie, of Melbourne, in the Colony of Victoria.
Sealed the 4th February 1873, and dated the 29th November 1872..
PROVISIONAL SPECIFICATION left by the said Lindsay Ogilvie at the
Office of the Commissioners of Patents, with his Petition, on the
29th November 1872.
I, LINDSAY OGILVIE, of No. 5, Lime Street Square, in the City of
London, do hereby declare the nature of the said Invention for "IMPROVE-,
MENTS IN APPARATUS FOR STEERING SHIPS," to be as follows :—
The object of this Invention is to prevent the transmission to the
stcering tackle and wheel of the shocks which occur when the rudder is'
struck by heavy seas. For this purpose a double wedge supported by a
semicircular arc is employed. The tiller projects to the rear of the

page_text: rudder head, and it terminates in a double incline corresponding to the
double wedge. The double incline on the tiller is received between
the two faces of the double wedge. In steering the vessel the steering
gear draws the double wedge to and fro along the arc which supports it,
and the double wedge carries the tiller round with it. When, however,
a sea strikes the rudder the tiller is locked by the wedge, and the shock
is thrown upon the arc supporting the wedge, which is very strongly
constructed, and is thickly padded with vulcanized india-rubber.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Lindsay Ogilvie in the Great Seal Patent Office on
the 29th May 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LINDSAY
OGILVIE, of No. 5, Lime Street Square, in the City of London, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of November, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Lindsay Ogilvie, Her special license,
that I, the said Lindsay Ogilvie, my executors, administrators, and
assigns, or such others as I, the said Lindsay Ogilvie, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thercafter 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 "IMPROVEMENTS IN
APPARATUS FOR STEERING SHIPS," a communication to me from abroad by
Cyristian Splidt Ogilvie, of Melbourne, in the Colony of Victoria, upon
the condition (amongst others) that I, the said Lindsay Ogilvie, my
executors or administrators, by an instrument in writing under my, or
their, ot 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 Seal
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said Lindsay Ogilvie, do hereby declare
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :-
The object of this Invention is to prevent the transmission to the
steering tackle and wheel of the shocks which occur when the rudder is
struck by heavy seas. For this purpose a double wedge supported by a
circular arc is employed. The tiller projects to the rear of the rudder
head, and it terminates in a double incline corresponding to the double
wedge. The double incline on the tiller is received between the two
faces of the double wedge. In steering the vessel the steering gear
draws the double wedge to and fro along the are which supports it, and
the double wedge carries the tiller round with it. When, however, a sca
strikes the rudder the tiller is locked by the. wedge, and the shock is
thrown upon the are supporting the wedge, which is very strongly
constructed and is thickly padded with vulcanized india-rubber.
In order that my said Invention may be most fully understood and
1:1
T

page_text: In fine weather the wedge may be lifted from its place, and the
tackles attached directly to the tiller, or in some cases the tiller and the
wedge may be moved by separate gear, but simultaneously.
What I claim is the application of a wedge to control a ship's rudder,
substantially as described.
In witness whereof, I, the said Lindsay Ogilvie, have hereunto set
my hand and seal, this Twenty-seventh day of May, in the year
of our Lord One thousand eight hundred and seventy-three.
LINDSAY OGILVIE. (L.S.)