IMPROVEMENTS IN MACHINERY FOR WORKING RUDDERS
Year: 1866

page_text: LETTERS PATENT to George Daniel Davis, of 16, Woodstock Road, East
India Road, in the County of Middlesex, Caulker, for the Invention of
"IMPROVEMENTS IN MACHINERY FOR WORKING RUDDERS."
COMPLETE SPECIFICATION filed by the said George Daniel Davis
at the Office of the Commissioners of Patents, with his Petition and
Declaration, on the 9th February 1866, pursuant to the 9th Section
of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
DANIEL DAVIS, of 16, Woodstock Road, East India Road, in the County of
Middlesex, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
MACHINERY FOR WORKING RUDDERS," and have petitioned Her Majesty to grant
unto me, my executors, administrators, and assigns, Her Royal Letters
Patent for the same, and have made solemn Declaration that I am the sole
and original Inventor thereof, and that the same is not in use by any other
person or persons to my knowledge or belief."
NOW KNOW YE, that I; the said George Daniel Davis, do hereby declare
that the following Complete Specification, under my hand and seal, fully

page_text: describes and ascertains the nature of the said Invention, and in what
manner the same is to be performed, in and the following statement :-
IMPROVEMENTS IN MACHINERY FOR WORKING RUDDERS.
The object of these improvements is to give greater security and protection
to the screw shaft and nut, and also to enable the rudder to work steady and
easy. To effect this I use screw and chain in conjunction, as hereafter
described, and also construct frames or bearings suitable to receive rollers,
blocks, or sheaves, which are supported on perpendicular or horizontal
spindles, and on these frames or bearings are placed or fixed an iron plate,
slide, or slotway rods, or guard irons, which are for the steadying of a nut
that works or travels thereon, and also for the security and protection of
the screw.
I do not confine myself to any particular form of slide or guard
irons, as various shapes may be used for the same purpose. The nut is pro-
pelled along the slide, slotway, or guard irons a rotary movement of the
screw shaft or spindle which passes through the nut, and the end connected to
an ordinary steering wheel which is worked in the usual manner to give the
desired motion. To the nut is connected chain or rope; these chains or ropes
are passed round the rollers, blocks, or sheaves above alluded to, and then
connected to a wheel segment or lever fixed on the rudder head, and the
desired motion conveyed thereto by the nut travelling along the slide, slotway,
or guard irons, as above mentioned; an iron plate or lever may also be fixed
to the nut, and the chain or ropes connected thereto and worked in a similar
manner as described.
The object of these improvements are for the working of rudders; but that
the nature of the improvements and the means adopted in carrying the same
into effect may be fully understood, I will proceed to describe the Drawing
annexed.
DESCRIPTION OF THE DRAWING.
Fig. 1 represents a side elevation and full arrangement of the improvement;
Fig. 2, a plan view with slide screw and nut; Fig. 3, a plan view of screw
nut and guard irons connected to bearings; Fig. 4, a front elevation of the
frames or bearings with steering wheel connected to spindle; Fig. 5, a plan
view of rudder head and segment with chain and rollers; Fig. 6, a plan view
of rudder head with segment and chain connected to iron plate or lever fixed
on nut, and passed round sheaves in lieu of rollers; Fig. 7, 8, and 9 are end
views of nuts to work with slide or guard irons.
In all the views similar
Fig. 1 represents a side elevation and full arrangement of the improvement;
Fig. 2, a plan view with slide screw and nut; Fig. 3, a plan view of screw
nut and guard irons connected to bearings; Fig. 4, a front elevation of the
frames or bearings with steering wheel connected to spindle; Fig. 5, a plan
view of rudder head and segment with chain and rollers; Fig. 6, a plan view
of rudder head with segment and chain connected to iron plate or lever fixed
on nut, and passed round sheaves in lieu of rollers; Fig. 7, 8, and 9 are end
views of nuts to work with slide or guard irone
letters indicate like parts wherever they occur.
In all the views similar

page_text: Fig. 1 and 4, a denotes the frames or bearings; d, steering wheels; b, top
plate and slide; c, screw shaft or spindle; e, nut; f, rollers supported in
frames; g, segment on rudder head; h, rudder head.
Fig. 2, b, top plate with slide; c, screw shaft or spindle; e, nut.
Fig. 3, a, upper part of frames or bearings; c, screw shaft or spindle ;
e, nut; i, guard rods or irons.
Fig. 5 and 6, 9, segment; h, rudder head; f, top of rollers.
Fig. 6, j, iron plate or lever fixed to nut e.
Having thus described the nature of my improvement, and the means I
have found to answer in carrying the same into effect, I would have it under-
stood that I do not claim the various parts separately considered, nor do I
confine myself to the precise details shown and described; but what I do
claim is, the adaptation or combination of means to facilitate the working of
rudders, substantially as described.
In witness whereof, I, the said George Daniel Davis, have hereunto set
my hand and seal, this Ninth day of February, in the year of our Lord
One thousand eight hundred and sixty-six.
GEORGE DANIEL DAVIS.
(L.B.)