IMPROVEMENTS IN MACHINERY FOR WORKING RUDDERS
Year: 1869

page_text: LETTERS PATENT to George Daniel Davis, of No. 16, Woodstock
Road, East India Road, in the County of Middlesex, Ships'
Machinist, for the Invention of "IMPROVEMENTS IN MACHINERY FOR
WORKING RUDDERS."
Sealed the 22nd April 1870, and dated the 9th November 1869.
PROVISIONAL SPECIFICATION left by the said George Daniel Davis.
at the Office of the Commissioners of Patents, with his Petition,.
on the 9th November 1869.
I, GEORGE DANIEL DAVIS, of No. 16, Woodstock Road, East India
Road, in the County of Middlesex, Ships' Machinist, do hereby declare-
the nature of the said Invention for "IMPROVEMENTS IN MACHINERY FOR
WORKING RUDDERS," to be as follows:-
The object of this Invention is to give greater security and protection
to the machinery used for steering vessels and for working rudders. To
obtain this I construct a frame or bearing plate, the centre so formed
that the rudder head or fittings connected thereto may pass. freely

page_text: through the same and work therein. The bearing plate is also supported
at a proper distance from the centre by a casting or ring fitted to the
rudder or on a similar support on the deck. The bearing plate is kept
stationary by a standard or pillar passing perpendicularly through a slot
hole or groove at the end of the above-named plate.
A screw and nut with guide rods supported on bearings similar to that
described in my Patent of February One thousand eight hundred and
sixty-six, is connected parallel with the bearing plate, and when-the-
whole is thus fixed or connected forms a compact body of immense
strength. This peculiar construction of support gives security to the
whole apparatus without becoming rigid, this being the principle of my
Invention.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Daniel Davis in the Great Seal Patent
Office on the 28th April 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
DANIEL DAVIS, of No. 16, Woodstock Road, East India Road, in the
County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of November, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said George Daniel Davis, Her special
license that I, the said George Daniel Davis, my executors, adminis-
trators, and assigns, or such others as I, the said George Daniel Davis,
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,
usc, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN MACHINERY FOR WORKING RUDDERS," upon the condition
(amongst others) that I, the said George Daniel Davis, my executors
or listrators, 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

page_text: 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 Daniel Davis, 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 :-
This Invention has for its intent or object improvements in machinery
for working rudders, to accomplish which a frame or bearing plates is
constructed so as to take or carry the screw & nut in such a manner
that the rudder head or fitting attached thereto shall form or be its
centre or fulcrum. The plate (or screw carrier) is made with a slot
hole if for a single post or standard, or otherwise straight if used with
two or more standards, as may be requisite in its adoption.
The rudder head fitting is so constructed either in cast or wrought
iron to fit the rudder head, and has a hole in the slot way to disconnect
or connect when requisite.
To carry out this Invention completely I also construct a plate or
bearing so as to carry a barrel or rollers with a screw wheel and screw
or screw pinion, as shewn in Figures 5 and 6.
DESCRIPTION OF DRAWING.
Figure 1 represents a side elevation. A, standard or "sampson" post;
B, rudder head with fitting passing through plate E on same; F, bearing
plate; C, screw in blocks with nut and guide rods. Figure 2, plan view
of screw, travelling nut, and guide rods. F, F, guide rods; C, screw.
Figures 3 and 4, bearing plates. Figure 5, plan view of screw, screw
wheel, and rollers, as already described. Figure 6, side elevation of
screw, screw wheel, rollers, or sheaves adapted for bridge or distant
steering; Figure 7, end view of bearing blocks; Figure 8, end view of
travelling nut; Figure 9, rudder head fitting; Figure 10, double sampson
post for plate to pass between.
Having thus described the principle of my Invention and improve-
ments, and the manner I have discovered to answer to carry out the
requirements effectually, I desire that it should be understood that I
do not claim the adaptation of screw and nut guide rods or arms; but I
claim, the the application of a bearing plate or frame so adapted for the

page_text: rudder head to form its own centre or fulcrum, entirely isolating it from
bearings or other support, excepting the rudder, and the adaptation of
roller or rollers with wheel and screw pinion on application, as shewn in
Figures 5 and 6.
I claim as respects my Invention the construction of improvements in
machinery for working rudders," in the manner above described.
In witness whereof, I, the said George Daniel Davis, have here-
unto set my hand and seal, this Eighth day of April, in the year
of our Lord One thousand eight hundred and seventy.
GEORGE DANIEL DAVIS. (L.S.)