IMPROVEMENTS IN STEERING APPARATUS, AND IN GIVING MOTION TO MACHINERY FOR. RAISING AND MOVING WEIGHTS
Year: 1856

page_text: LETTERS PATENT to George Wilkinson, of 17, Evans Street, Poplar, in
the County of Middlesex, for the Invention of "IMPROVEMENTS IN STEERING
APPARATUS, AND IN GIVING MOTION TO MACHINERY FOR. RAISING AND MOVING
WEIGHTS."
Sealed the 9th September 1856, and dated the 20th May 1856.
PROVISIONAL SPECIFICATION left by the said George Wilkinson at
the Office of the Commissioners of Patents, with his Petition, on the
20th May 1856.
I, GEORGE WILKINSON, of 17, Evans Street, Poplar, in the County of
Middlesex, do hereby declare the nature of the Invention for "IMPROVEMENTS”
IN STEERING APPARATUS, AND IN GIVING MOTION TO MACHINERY FOR RAISING AND
MOVING WEIGHTS," to be as follows:-.
This Invention has for its object improvements in steering apparatus, and
in giving motion. to machinery for raising and moving weights. For these
purposes a ring is formed with internal inclined or oblique teeth, either all
round. or partly round the interior. surface thereof, according as it is desired
that the motion should be .continuous or alternating. When for steering, the
ring is only required to have the inclined or oblique teeth partly around
the interior of the ring, and such ring is fixed to the tiller head, or other
5 instrument requiring like motion, by means of a half spherical or hollow metal

page_text: basin, the object being that such basin inay contain oil or lubricating matter.
On the axis used to give motion to the ring a disc is fixed, of a diameter
about equal to the diameter of the ring within the teeth, and on such disc
are formed portions of the worms of a one or more threaded screw (by
preference a two-threaded screw); and for the purpose of steering, or other
uses, where a reciprocating motion is desired, the axis of the disc or screw
may be across the centre of the ring; but when a continuous rotatory motion
is desired, then the axis of the disc or screw is across the ring, somewhat on
one side of the centre of the ring. The advantage of having the ring of
oblique or inclined teeth fixed to a hollow basin or vessel is, that the threads
of the screw in their rotation bring up lubricating matter contained therein
on their surfaces.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Wilkinson in the Great Seal Patent Office on the
20th November 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
WILKINSON, of 17, Evans Street, Poplar, in the County of Middlesex,' send
greeting.
WHEREAS. Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of May, in the year of our Lord One
thousand eight hundred and fifty-six, in the nineteenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
George Wilkinson, Her special licence that I, the said George Wilkinson, my
executors, administrators, and assigns, or such others as I, the said George
Wilkinson, 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 "IMPROVEMENTS IN
STEERING APPARATUS, AND IN GIVING MOTION TO MACHINERY FOR RAISING AND
MOVING. WEIGHTS," upon the condition (amongst others) that I, the said George
Wilkinson, 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 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 George Wilkinson, 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
statenient thereof, that is to say:-
This Invention has for its object improvements in steering apparatus, and
in giving motion to machinery for raising and moving weights. For these
purposés a ring is fornied with internal inclined or oblique teeth, either all.
round or partly round the interior surface thereof, according as it is desired
that the motion should. be continuous or alternating. When for steering, the.
ring is only required to have the inclined or oblique teeth partly around.
the interior of the ring, and such ring is fixed to the tiller head, or other
instrument requiring like motion, by means of a half spherical or hollow
metal basin, the object being that such basin may contain oil or lubricating.
matter. On the axis used to give motion to the ring a disc is fixed, of a.
dianicter about equal to the diameter of the ring within the teeth, and on.
such disc are formed portions of the worms of a one or more threaded screws
(by preference a two-threaded screw); and for the purpose of steering, or other
uses, where a reciprocating motion is desired, the axis of the disc or screw
may be across the centre of the ring; but when a continuous rotatory motion
is desired, then the axis of the disc or screw is across the ring, somewhat on
one side of the centre of the ring. The advantage of having the ring of
oblique or inclined teeth fixed to a hollow basin or vessel is, that the threads
of the screw in their rotation bring up lubricating matter contained therein on:
their surfaces.
Having thus stated the nature of my Invention, I will proceed to describe
more fully the manner of performing the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a vertical section, and Figure 2 a plan, partly in section, of
steering apparatus constructed according to my Invention. a is a ring, having
internal inclined or oblique teeth formed partly round its inner circumference.
The ring a is fixed on the half spherical or hollow metal basin 6, which
contains oil or other lubricating matter, and which is firmly fixed or keyed on
the upper end of the axis c, supported in suitable bearings on the frame or
support e, as shown. d is an axis, supported in bearings formed on the fixed
support or framing e; on the axis d is fixed the disc d', having a worm
formed on its circumference, which gears with the teeth of the ring a to give
motion thereto and to the axis c, the axis d receiving motion from a steering
wheel fixed thereon. The axis c may be fixed to or form part of a rudder

page_text: post, or reciprocating motion. may be communicated from. the axis c to the
rudder by means of a chain wheel 'c',. as shown, or in any convenient manner
for steering. When continuous rotatory motion is required for giving motion
to machinery for raising or moving weights, I. place the axis d.on one side of
the centre of the ring a, see Figures 3 and 4, which show a section and plan
of apparatus suitable for giving continuous rotatory motion to the axis c,.
from which motion may be communicated by bevilled wheels or in any
convenient manner to a windlass, barrel, or other apparatus for raising or
moving weights. The ring a in this arrangement is formed with teeth. all
round its inner circumference, and by placing the axis of the disc and worm
d' on one side of the centre of the ring a, the worm is caused to engage with
the teeth of the ring a on one side, and to be clear or out of the way of the
teeth on the opposite side. The disc or worm d, by rotating partly in the
lubricating material contained in the basin or cup, raises a.continuous supply
to the teeth of the ring.a.
In witness whereof, I, the said George Wilkinson, have hereunto set
my hand and seal, this Twentieth day of November, in the year of
our Lord One thousand eight hundred and fifty-six.
Witness,
J. G. TONGUE.
GEORGE WILKINSON. (L.S.)