Improvements in Mounting Rudders.
Year: 1895

page_text: Date of Application, 31st Oct., 1895
Complete Specification Left, 30th July, 1896-Accepted, 5th Sept:, 1896
PROVISIONAL SPECIFICATION.
Improvements in Mounting Rudders.
1, WILLIAM HENRY WARREN, of Donnington Cottage, Holme Church Lane,
Beverley, in the County of York, Foreman Shipwright, do hereby declare the
nature of this invention to be as follows:-
This invention relates to an improved method of and means for mounting rudders,
whereby the ordinary stops on the stern and rudder posts are dispensed with, the
weight of the rudder is suspended from above instead of being supported from
below and the friction incidental to working is considerably reduced.
A rudder mounted according to my improved method is provided near the top of
the rudder-head with a disc which is carried upon a series of balls arranged in a
circular race.
The ball-race is formed partly in the lower face of the disc and
partly in the upper face of a plate preferably made in halves and securely fastened
to the deck. In the adjacent faces of the disc and face-plate are formed annular
-projections and grooves, the latter adapted for the reception of the former and
so arranged as to limit the total angular movement of the rudder-head to about
90 degrees; that is to say, 45° to starboard and 45° to port. A considerably
larger angular movement may, however, be allowed for if required. The centre of
the face-plate; through which the rudder-head passes, may be formed with a deep
recess lined with lignum vitæ or the like inserted in' strips. The top of the rudder-
The rudder
head is provided with a tiller, yoke or quadrant in the usual manner.
may terminate below in a gadgeon mounted in a lignum vitæ or white metal bush
fitted to the pintail.
n
201
CAL 100K
Improvements in Mounting Rudders.
1, WILLIAM HENRY WARREN, of Donnington Cottage, Holme Church Lane,
Beverley, in the County of York, Foreman Shipwright, do hereby declare the
nature of this invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
This invention relates to an improved method of and means for mounting rudders,
whereby the ordinary stops on the stern and rudder posts are dispensed with, the
weight of the rudder is suspended from above instead of being supported from
below and the friction incidental to working is considerably reduced.
A rudder mounted according to my improved method is illustrated in section in
Fig. 1 of the accompanying drawings. Fig. 2 is a plan of the under side of the
rotative disc. Fig. 3 is a plan of the upper face of the deck-plate.
The rudder is provided near the top of the rudder-head a with a disc b which is
carried upon a series of balls c arranged in a circular race d. The ball-race d is

page_text: formed partly in the lower face of the disc b and partly in the upper face of a
plate e securely fastened to the deck D by means of bolts (not shown). In the
adjacent faces of the disc b and deck- or face-plate e are formed annular pro-
jections 61, e and annular grooves, e, the latter adapted respectively for the
reception of the former, and so arranged as to limit the total angular movement of
the rudder-head to about 90°; that is to say, 45° to starboard and 45° to port.
A considerably larger angular movement may, however, be allowed for if required.
The centre of the deck- or face-plate e, through which the rudder-head a passes,
may be formed with a deep recess lined with lignum vitæ g or the like inserted
in strips. The recess may be made square instead of circular, as shown, and be
fitted with a bush of metal or wood formed in sections; wedges being disposed
behind the sections for effecting their adjustment for wear.
To provide against the accidental unshipping of the rudder, the deck- or
face-plate e is provided with a circumferential groove into which bolts or
projections carried by the dependent peripheral flange on the disc b engage. By
these means, the rising or beating up and down of the rudder, should the
guard plates at the gudgeons become detached, is prevented as also the escape of
the balls.
The top of the rudder-head a is provided with a tiller, yoke or quadrant A in
the usual manner. The rudder may terminate below in a gudgeon mounted in a
Where the deck does not extend beyond the stern-post, the plate e may be in
the form of a bracket; same projecting from the stern of the vessel.
lignum vitæ or white metal bush fitted to the pintail.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I claim :-
1
1. The improved method of and means for mounting rudders, substantially as
herein described, whereby the rudder is more securely supported in position and
the friction incidental to working is reduced to a minimum.
2. The improved means for mounting rudders arranged substantially as herein
described, and comprising a disc such as band a plate such as e respectively
provided with projections and recesses and furnished with anti-friction balls.
3. In mounting rudders, the employment of a disc b attached to the rudder-head
and formed with an annular projection b¹ and an annular recess ³, a plate e also
formed with an annular projection e¹ and an annular recess e³, the projection on the
one engaging with the recess in the other, thereby limiting the angular movement
of the rudder, and anti-friction balls arranged in a circular race in the contiguous
faces of the disc and plate, substantially as described.
Dated this 25th day of July 1896.