Improvements in Devices for Rapidly Altering the Direction of Movement of Ships.
Year: 1899

page_text: Date of Application, 31st Oct., 1899
Complete Specification Left, 14th Dec., 1899-Accepted, 20th Jan., 1900
PROVISIONAL SPECIFICATION.
Improvements in Devices for Rapidly Altering the Direction of
Movement of Ships.
I, KNUT ARVID POSSE, of exiö, in the Kingdom of Sweden, Landed Pro-
prietor, do hereby declare the nature of this invention to be as follows:-
This invention relates to a device for enabling the direction of movement
of ships to be rapidly changed, so that dangers of a certain kind, such for instance
as collision with another ship, which in consequence of fog or for other reasons
could not be observed until in very close proximity may be avoided.
The invention is shown in the accompanying drawings, Figure 1 being a side
view, Figure 2 a plan view and Figure 3 a section on the line ab of Figure 1
but with the disc hereinafter mentioned in a closed position.
The device may be placed on both sides of the ship somewhat below the level
of the water and in front of the centre of gravity of the ship is preferably
arranged at a distance of 3rd to th of the length of the ship reckoned from
the front, and consists of a vertical disc 1 which is horizontally revoluble in
supports, a vertical spindle 2, which is passed through the disc and attached
thereto, being revolubly located in a semi-cylindrical casing 3 watertightly fixed
on the inner side of the ship by means of screws or in other suitable way.
The spindle has such a position to the disc that it divides the latter into two
parts, the part situated on one side of the spindle being somewhat longer than
the other. In the ship an opening 4 is provided through which the longer of
the said parts may be projected as shown in Figures 1 and 2. The said opening
has such a form that it is entirely closed by the disc when the latter is closed,
whilst the outer side of the part of the disc which closes the opening comes in.
the same plane as the outside of the body as shown in Figure 3. The disc is
so placed relative to the opening 4 that it bears against the rear
edge of the same when it has reached a given oblique backwardly
directed position. In order to give the disc in this position a still more
secure support, a strip 5 is provided on the casing against which the inner part
of the disc bears as shown in Figure 2. At the upper part of the spindle 2 there
is provided in the casing 3 a packing bush 6, and at the upper end of the spindle
a lever is fixed, so that by means of a steam winch or the like the disc may
be manoeuvred from the steering bridge. The water pressing through the opening
against the inner part of the disc partially reduces the impetus of rotation round
the spindle 2 which is imparted by the pressure to the outer projecting part of
the disc, and consequently the disc may be easily maneuvred.
The device is operated in the following manner:
If it be desired for instance that the ship shall rapidly diverge to the star-
board side the disc arranged at the starboard side is opened by means of a steam
winch or the like, whilst simultaneously the steering wheel is put over in the
ordinary manner, whereupon the pressure of the water forces the said disc to
immediately assume the position shown in Figure 2, that is to say, an oblique,

page_text: backwardly directed one. In the forward movement of the ship, the masses of
water encountering the disc will act with a steering movement on the ship towards
the side where the disc is placed, that is to say in this instance to the starboard
side. For suddenly stopping the ship both discs are opened outwardly at right
angles, whilst simultaneously the engine is put to "stop" and "backward."
Dated this 30th day of October 1899.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant,
Improvements in Devices for Rapidly Altering the Direction of
Movement of Ships,
I, KNUT ARVID POSSE, of Wexio, in the Kingdom of Sweden, Landed Pro-
prietor, 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 a device for enabling the direction of movement
of ships to be rapidly changed, so that dangers of a certain kind, such for instance
as collision with another ship, which in consequence of fog or for other reasons
could not be observed until in very close proximity may be avoided.
The invention is shown in the drawings accompanying the Provisional Specifi-
cation, Figure 1 being a side view; Figure 2, a plan view; and Figure 3 a
section on the line ab of Figure 1 but with the disc hereinafter mentioned in a
closed position.
The device which may be placed on both sides of the ship somewhat below the
level of the water and in front of the centre of gravity of the ship, is preferably
arranged at a distance of 3rd to th of the length of the ship reckoned from
the front, and consists of a vertical disc 1 which is horizontally revoluble in
supports, a vertical spindle 2, which is passed through the disc and attached
thereto, being revolubly located in a semi-cylindrical casing 3 watertightly fixed
on the inner side of the ship by means of screws or in other suitable way.
The spindle has such a position to the disc that it divides the latter into two
parts, the part situated on one side of the spindle being somewhat longer than
the other. In the ship an opening 4 is provided through which the longer of.
the said parts may be projected as shown in Figures and 2. The said opening
has such a form that it is entirely closed by the disc when the latter is closed,
whilst the outer side of the part of the disc which closes the opening comes in
the same plane as the outside of the body as shown in Figure 3. The disc is
so placed relative to the opening 4 that it bears against the rear
edge of the same when it has reached a given oblique backwardly
directed position. In order to give the disc in this position a still more
secure support, a strip 5 is provided on the casing against which the inner part
of the disc bears as shown in Figure 2. At the upper part of the spindle 2 there,
is provided in the casing 3 a packing bush 6, and at the upper end of the spindle
a lever 7 is fixed, so that by means of a steam winch or the like the dise may
be manoeuvred from the steering bridge. The water pressing through the opening
against the inner part of the disc partially reduces the impetus of rotation round
the spindle 2 which is imparted by the pressure to the outer projecting part of
the disc, and consequently the disc may be easily manœuvred.
The device is operated in the following manner-

page_text: If it be desired for instance that the ship shall rapidly diverge to the star-
board side the disc arranged at the starboard side is opened by means of a steam
winch or the like, whilst simultaneously the steering wheel is put over in the
ordinary manner, whereupon the pressure of the water forces the said disc to
immediately assume the position shown in Figure 2, that is to say, an oblique,
backwardly directed one. In the forward movement of the ship, the masses of
water encountering the dise will act with a steering movement on the ship towards
the side where the disc is placed, that is to say in this instance to the starboard
side. For suddenly stopping the ship both discs are opened outwardly at right
angles, whilst simultaneously the engine is put to: "stop" and "backward."
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
1 claim is:
1. A device for rapidly altering the direction of movement of ships comprising
a disc placed at each side of the ship, said discs being so arranged that when
one of them is projected on the outside of the ship at the one side, the ship is
rapidly diverted towards that side, substantially as hereinbefore set forth.
2. A device for rapidly altering the direction of movement of ships comprising
a vertical line (1) placed on each side of the ship below the level of the water
and in front of the centre of gravity of the ship and mounted horizontally
revoluble in supports in a casing (3) watertightly fixed on the inner side of the
ship, cach disc being so placed relative to an opening (4) formed in the outer
side of the ship that the rear edge of the said opening forms a point of support
for the disc when the latter is projected outside the ship in a given oblique back-
wardly directed position, and that the disc closes the opening when drawn in,
whilst at the upper end of the spindle (2) on which the disc rotates, a lever (7)
is fixed with the object of enabling the disc, which under normal circumstances
is kept closed, to be opened by means of a steam winch or the like, so that the
said disc in consequence of the action of the water pressure assumes the said
oblique backwardly directed position, and the ship is rapidly diverted towards
the corresponding side which has its disc projected, substantially as herein before
described.
L 1
1
101
1
1
1000
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.