Improvements in Ships' Rudders.
Year: 1895

page_text: his Print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c. Act, 1883) as allowed by
the decision of the Comptroller General of the 24th day of March 1898.
Date of Application, 31st Dec., 1895
Complete Specification Left, 22nd June, 1896-Accepted, 22nd Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in Ships' Rudders.
WILLIAM ROBERT LAWSON 24 Belmont Road Tottenham Mariner do hereby
declare the nature of this invention to be as follows:
My object in this invention is to improve the method of renewing the rudder
gudgeons, pintles, and bushes, & also to carry out any repairs to the same, without
disturbing the steering gear, on top, or lifting the rudder.
To effect this carry the weight of the rudder clear of the heel step, & make
provision for this by either a suspension frame; fitted with ball bearings; secured
to transom frames, & so made that the whole arrangement can be got at for
adjustment at any time, by removing a clamp ring.
Or by one or more brackets forged on stern post between the pintles (face up)
with corresponding brackets on rudder frame (face down) into which is fitted
circular or radial friction pieces of steel or other material, or balls.
All the pintles & bushes can be then arranged so that they may be renewed, or
repaired without lifting the rudder.
Improvements in Ships' Rudders.
I, WILLIAM ROBERT LAWSON, of 24 Belmont Road, Tottenham, in the County
of Middlesex, Mariner, 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:-
The object of this invention is to improve the method of renewing the rudder
gudgeons, pintles, and bushes, and also carry out any repairs to the same without
disturbing the steering gear on top, or lifting the rudder.
To effect this I carry the weight of the rudder clear of the heel step, and make
provision for this, either by a suspension frame fitted with ball bearings secured to
transom frames and so made that the whole arrangement can be got at for adjust-
ment at any time by removing a clamp ring. Or by one or more brackets on stern
post between the pintles face up, with corresponding ones on rudder frame face
down, into which is fitted circular or radial friction pieces of steel or other
material, or balls.

page_text: }:
*All the pintles and bushes can then be arranged so that they may be renewed or
repaired without lifting the rudder!
..
The annexed drawings show the manner in which I propose to carry out my
improvement.
Fig. 1. shows an elevation of the stern post A. and rudder B. in position.
Fig. 2. shows an end view of rudder B.
On the stern post A. I have projections shown C. C. C. C. and D.
Also, carried out clear of the rudder, projections shown E. E. E. E. E., which
fit over pintles FF. F: F: F. fastened in projections C. and D. on stern post.
The projections E. are bushed with lignum-vitæ or other suitable material as
shown on enlarged scale Fig. 3. at.G, with a collar H., studded to keep the strips
of lignum-vite in position, also shown at H. in Fig. 4. In this figure there is also
shown, at Q, a key for preventing the strips of lignum-vitæ or other material
from working round. So that when it. is required to renew these: bearings or
bushes, this can be done by lifting the ring Ĥ. the old strips being drawn out
and fresh ones placed in; without moving. or lifting the rudder B. Fig. 1.
For carrying the weight of the rudder free from the projections C. and D.,
Fig. 1. and Fig. 3., on stern-post, I have projections or brackets I. I. Fig. 1., shown
enlarged at I. Fig. 3, in any approved position on the stern post A., which are
forged or cast on, or may be clamped or riveted or bolted to the stern post.
Above these brackets. I. I. which are made face upwards, I have similar pro-
jections or brackets J. J. made face downwards upon the rudder B. Fig. 1, also
shown enlarged in Fig. 3 at J., which may also be forged or cast on, or may be
clamped, or riveted, or bolted on."
--
07:
In the faces of these brackets I! and J. I have seated discs made of brass, steel,
or other suitable material, shown K K in Fig. 3., or I may have frictional rollers
in between these discs, running in grooves. The bottom disc R is held in
position by means of a tap bolt as shown L Fig. 3, passing through the projection I.
in stern-post; whilst the top disc 'M is kept in position by means of a tap bolt O.
passing down through the projection J. Fig. 3.
1
To prevent these discs from revolving, I have a pin or stud N with a square
head, also shown enlarged at N Figs. 5 and 6. with a slot P. Figs. 3. 5. and 6.
corresponding to the head of stud N, running across the face of brackets J. in
rudder B. and I. in sternpost A. Fig. 3. These slots may also be used for wedging
the bearings out of seat.
3
By this arrangement these discs, or radial friction pieces, can be removed without
the necessity of taking the rudder away from the stern-post, it being merely
requisite to lift it a sufficient height to permit of the discs being drawn out and
renewed when necessary...
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
}
1. The method of supporting the rudder on one or more brackets or projections
on the stern post so that the rebushing, or the renewal of pintles which are on the
brackets or projections of the stern post, may be done without disturbing the
steering gear or lifting the rudder, substantially as described and shown in
drawings.
2. The method of renewing the bushes without removing the rudder or
disturbing the steering gear, substantially as described and shown in drawings.
3. The improvement in ship's rudders substantially as described and shown in
drawings.