Year: 1885

page_text: I GEORGE DANIEL DAVIS of Garford Street Poplar in the County of Middlesex
Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates to means for obtaining a restraining hold upon the rudder
of a ship or vessel especially where power steering being. used it is desired to
change to hand steering or otherwise so that the rudder may be prevented from
doing damage by its motion when struck by heavy seas
The objects of the improvements are to secure such control over the rudder when
it is found necessary to disconnect the steam steering machinery, and to work the
rudder by hand power or make the reverse change and also in the event of any
accident happening to the connections to have full command and control over the
rudder while the damaged parts are being repaired, and thereby prevent serious
accidents that might otherwise arise from the rudder being free to lash to and fro.
According to my invention I secure or key on the rudder head a wheel or pulley
which is turned true on its outer circumference or part to which friction is applied
and this wheel of sufficiently strong and large dimensions is fitted to a semicircle
or. such like metal block secured firmly to the deck or part of the vessel and on
each side of the last named block is an opening or tubular bearing each adapted to
secure one of the two ends of or connections to a semicircular brake band. These
two ends or connections to the brake band have a thread cut on each of them one
to form a right handed and the other a left handed screw, these screws are operated
on by right and left handed metal nuts made by preference of gun metal and
worked by suitable levers, each lever being pulled towards the person working
them on account of the limited space generally available for their operation.
This arrangement admits of the brake band exerting an enormous pressure upon
the brake wheel forcing that brake wheel against the semicircle fixed block. The
brake wheel the band and the block being all turned accurately to fit each other
great frictional holding power is attained upon the rudder enabling its movements
to be efficiently controlled and preventing its movements from effecting damage to
the parts of the apparatus for operating it or other injury.
D
708

page_text: OFCOM Ops
and other Vessels.
I GEORGE DANIEL DAVIS of Garford Street Poplar in the County of Middlesex
Engineer do hereby declare the nature of my invention for IMPROVEMENTS IN
MACHINERY FOR CONTROLLING RUDDERS OF SHIPS AND OTHER VESSELS, 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 means or apparatus adapted for obtaining a restraining
hold upon the rudder of a ship or vessel especially where power steering being
used it is desired to change to hand steering or otherwise so that the rudder may
be prevented from swaying or doing damage by its motion when struck by
heavy seas.
The objects of the improvements are to secure such control or restraint over the
rudder's motions when it is found necessary to disconnect the steam steering
machinery, and to work the rudder by hand power or make the reverse change and
also in the event of any accident happening to the connections to have full
command and control over the rudder while the damaged parts are being repaired,
and thereby prevent serious accidents that might otherwise arise from the rudder
being free to lash to and fro.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shews a plan view, Figure 2 a side view, and Figure 3 an end view,
of an arrangement of apparatus according to my invention in which I secure or
key on the rudder head a a wheel or pulley b (shewn separately by Figure 4)
which is turned true on its outer circumference or part 61 to which friction is
applied and this wheel of sufficiently strong and large dimensions is fitted to a
semicircular or such like metal block c (shewn separately by Figure 5) secured
firmly to the deck d or part of the vessel, and on each side of the last named block
is an opening or tubular bearing e each adapted to receive and secure one of the
two opposite ends f', f' of, or connections to, a semicircular brake band f. These
two ends or connections f¹ f' to the brake band f have a thread fa cut on each of
them the one screw f' to form a right handed and the other screw f¹ a left handed
screw, these screws f¹f' are operated on by right and left handed metal nuts g g¹
made by preference of gun metal and worked by suitable levers not shewn but of
ordinary kind each lever after its fitted end has been inserted in one or other of
the holes or sockets g2 being pulled towards the person working them on account
of the limited space generally available for their operation.
--
This arrangement admits of the brake band f exerting an enormous pressure
upon the brake wheel b forcing. that brake wheel against the semicircular fixed
block c. The brake wheel b, the band f and the block being all turned accu-
rately to fit each other great frictional holding power is attained upon the rudder

page_text: enabling its movements to be efficiently controlled and preventing its movements
from effecting damage to the parts of the apparatus for operating it or other
injury.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
The improvements in machinery or apparatas for controlling or restraining the
movements of ship's rudders, or rudders of other vessels, by means of a band or
surface acting on a wheel or enlarged part to the rudder head to hold or put
restraining friction on the same by compression against a fixed block or part
substantially as set forth.
WM BROOKES & SON,
Agents for the said G. D. Davis.