IMPROVEMENTS IN MACHINES FOR CLEANING SHIPS' BOTTOMS to be as follows
Year: 1885

page_text: I HJALMAR ARENTZ of Refshaleon Copenhagen Denmark Engineer do hereby
declare, the nature of said invention for "IMPROVEMENTS IN MACHINES FOR
CLEANING SHIPS' BOTTOMS to be as follows
"
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Machines constructed according to this invention are intended for cleaning ships'
bottoms while the ship is in the water and without its being brought into dock or
onto a grid.
The cleaning of the ship's bottom under water is performed by means of a
revolving brush made in the form of a hollow cylinder provided with brush outside
and mounted on two hollow gudgeons formed or provided on its end walls and
which rotate around two other hollow gudgeons or bearings on a fork-shaped
frame The rotation is produced by means of water which by a pump of sufficient
power is forced through a flexible hose or pipe which is connected with a hose
connection or mouthpiece on the central part of the fork frame, the water passing
through one hollow prong or branch of the fork frame and through a lateral jet
pipe therefrom acting against a turbine or other water motor which is applied at
one end of the brush cylinder, the water thence passing off through holes in the
end wall of the brush cylinder The motion is transmitted from the turbine by
the spindle of the turbine which has its bearing at one end of the brush cylinder,
viz in one end gudgeon thereof, and at the other end runs in a bearing formed in a
bracket or part formed or provided on the fork frame On the same end of the
turbine spindle is fixed a bevil pinion which gears into a bevil wheel. This latter
is fixed on a transverse spindle which by another tooth piníon transmits the motion
to a tooth wheel rim on the brush cylinder.
In using the apparatus a rope is tied by two branch lines or ropes to the two
ends or prongs of the fork frame, between which the brush cylinder is arranged
This is led down by one side of the ship and under the keel and up to the bulwarks
on the other side of same Another rope is fixed to the other or upper end of the
frame or to an arm joined to same which may also be provided with a steadying
wheel which rolls against the side of the ship The rope leads up to the bulwarks
or gunwale on the same side of the ship where the apparatus is suspended In
cleaning the ship the apparatus is alternately pulled up and down from the water
line to the keel whilst the brush is constantly revolved by the water pressure, as
described. Where the ship's side is perpendicular, or nearly so, the apparatus may

page_text: easily be guided by means of a pole which may be connected to its lower forked
end by means of a swivel joint. Where the ship's sides on the other hand turn
more or less inwards as well as the bottom of the ship the brush cylinder presses
against the ship's side by its own buoyancy, inasmuch as its interior forms an air
chamber being provided with end walls and sleeves round the spindle and is thus
separated from those parts at its outer ends, in which the turbine and the tooth
wheels and the bracket are arranged, so that the water cannot penetrate therein,
and in consequence of this and the light construction the requisite buoyancy is
imparted thereto.
As soon as a perpendicular strip of the ship's side has been prepared, the
apparatus is shifted by means of the before mentioned ropes to the next adjoining
part of the ship's side.

page_text: r
I, HJALMAR ARENTZ of Refshaleon Copenhagen Denmark Engineer 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
-
Machines constructed according to this invention are intended for cleaning ships'
bottoms while the ship is in the water and without its being brought into dock or
onto a grid.
Figure 1 of the accompanying drawings is an end view of an apparatus
constructed according to my invention and Figure 2 a front elevation partly in
section
The cleaning of the ship's bottom under water is performed by means of a
revolving brush made in the form of a hollow cylinder or stock a provided with
brush outside and mounted on two hollow gudgeons o c³ formed or provided on its
end walls and which rotate around two other hollow gudgeons or bearings formed
or fitted on a fork-shaped frame b 61 The rotation is produced by means of water
which by a pump of sufficient power is forced through a flexible hose or pipe which
18 connected with a hose connection or mouth piece d on the central part of the
fork frame b 6, the water passing through one hollow prong or branch 6 of the fork
frame and through a lateral jet pipe e therefrom acting against a turbine for other
water motor which is applied at one end of the brush cylinder a the water thence
passing off through the holes shown in the end wall of the brush cylinder. The
motion is transmitted from the turbine by the spindle g of the turbine which
spindle has its bearing at one end of the brush cylinder viz in one end gudgeon
thereof at and at the other end runs in a bearing g formed in a bracket or part h
formed or provided on the branch 6¹ of the fork frame 6 b¹ On the same end of
the turbine spindle is fixed a bevil pinion n, which gears into a bevil wheel n³
This latter is fixed on a transverse spindle s which by another tooth pinion r
transmits the motion to a tooth wheel rum a' on the brush cylinder, this rim 18
shewn in end view in Figure 1
In using the apparatus a rope is tied by branch lines or ropes m to the two ends
or prongs of the fork frame b b', between which the brush cylinder is arranged
This rope is led down by one side of the ship and under the keel and up to the
bulwarks on the other side of same. Another rope is fixed as shown by line q to
the other or upper end of the frame or to an arm joined to same which may also
be provided with a steadying wheel p which rolls against the side of the ship The
rope q leads up to the bulwarks or gunwale on the same side of the ship where the
apparatus is suspended. In cleaning the ship the apparatus is alternately pulled
up and down from the water line to the keel whilst the brush is constantly revolved
by the water pressure, as described.
Where the ship's side is perpendicular or nearly so, the apparatus may easily be
guided by means of a pole t which may be connected to its lower forked end by
means of a swivel Joint as shown in the accompanying drawing Where the ship's
sides on the other hand turn more or less inwards as for instance near the bottom

page_text: '
of the ship, the brush cylinder presses against the ship's side by its own buoyancy,
Inasmuch as its interior forms an air chamber being provided with end walls & and
sleeve y round the spindle g and is thus separated from those parts at its outer
ends, in which the turbine and the tooth wheels n n² and r and the bracket h are
arranged, so that the water cannot penetrate therein, and in consequence of this
and the light construction the requisite buoyancy is imparted thereto.
As soon as a perpendicular strip of the ships' side has been thus prepared or
cleaned the apparatus is shifted laterally by means of the before mentioned ropes to
the next adjoining part of the ships' side.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same as to be performed, I declare that what
I claim 18
First An appliance for cleaning the outer submerged sides and bottom of a ship
consisting of a cylindrical brush which is rotated by a motor arranged within it
and driven by water pressure from a pump on the ship substantially as set forth
Second-An appliance for cleaning the outer submerged sides and bottom of a
ship consisting of a bifurcated frame having hollow axles projecting inward from
its end and having one arm tubular and connected with a water supply, a hollow
cylindrical brush being mounted with hollow trunnions on the hollow axles and
provided with a water motor for revolving it enclosed in one end and supplied
with water from the tubular arm of the bifurcated frame substantially as set
forth. I
Third-The construction of the apparatus substantially as shown in the accom-
panying drawings'
C
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