IMPROVEMENTS IN " ' WATER WHEELS IMPELLED BY THE TIDE OR OTHER WATER CURRENT
Year: 1883

page_text: LETTERS PATENT to Gerard Wenzeslaus von Nawrocki, Proprietor of the
firm of J. Brandt & G. Wv Nawrocki, Patent Solicitor and Civil Engineer of
124 Leipzigerstrasse, Berlin Germany for an Invention of "IMPROVEMENTS IN
"
'
WATER WHEELS IMPELLED BY THE TIDE OR OTHER WATER CURRENT a
communication from Hermann Baumotte of Vossnacken near Kupferdreh and
Rudolph Nöggerath of St Johann on the Saar both in the German Empire
PROVISIONAL SPECIFICATION left by the said Gerard Wenzeslaus von
Nawrocki at the Office of the Commissioners of Patents on the 4th May
1883.
GERARD WENZESLAUS VON NAWROCKI, Proprietor of the firm of J. Brandt &
G. W. v Nawrocki, Patent Solicitor and Civil Engineer of 124 Leipzigerstrasse
Berlin Germany "IMPROVEMENTS IN WATER WHEELS IMPELLED BY THE TIDE OR
OTHER WATER OURRENT (A Communication from Hermann Baumotte of
Vossnacken near Kupferdreh and Rudolph Nöggerath of St Johann on the Saar
both in the German Empire)
"
The object of this invention is to utilize the power of the tides or currents of
rivers and the sea and other water courses.
The motor is supported by, and fixed to a structure which is fixed to pontoons
or floating buoys and moored, so as to rise and fall with the tide if required. It is
a kind of undershot wheel consisting of an endless chain with a number of paddles
jointed thereto, running over two or more chain wheels, one or one set at either end
of the motor; from the shaft of one of the wheels the power is taken off. The
motor is generally moored at an angle to the flow of the stream so that each paddle
immersed receives the benefit of the current at the same time. The paddles are
connected to each other by means of stays to hold them in their right position,
each stay being connected at one end to the axle of one paddle and the other
end of the stay is movably fastened to the next paddle about three quarters of the
way up from the centre, so that when the pressure of the water acts on one it acts
on all the paddles.

page_text: The motor may as stated either be moored at a certain angle to the stream, or it
may be provided with guiding boards which are fixed to the structure on both
sides and in such a manner that they can be depressed and heightened and set at
any angle to the stream. Or the motor may be so arranged with two systems of
paddles that their longitudinal axes form two sides of a triangle, while the third
side or base is open to the flow of the water and the structure is anchored from the
centre of the open side, so that the motor swings into the most suitable position by
the flow of the tide or current.
The endless chain is provided with friction rollers which move in guides of angle
iron and the lower guides are two sided as the wheel, being subjected to the pressure
of the water, has a rising tendency.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Gerard Wenzeslaus von Nawrocki in the Great Seal Patent Office
on the 3rd November 1883.
GERARD WENZESLAUS VON NAWROCKI, Proprietor of the firm of J Brandt &
GW. v. Nawrocki, Patent Solicitor and Civil Engineer of 124 Leipzigerstrasse,
Berlin Germany "IMPROVEMENTS IN WATER WHEELS IMPELLED BY THE TIDE OR
OTHER WATER CURRENT (A communication from Hermann Baumotte of
Vossnacken near Kupferdreh and Rudolph Nöggerath of St Johann on the Saar,
both in the German Empire
"
The object of this invention is to utilize the power of the tides or currents of
rivers and the sea and other water courses..
The motor is supported by and fixed to a structure which is fixed to Pontoons or
floating buoys, and moored, so as to rise and fall with the tide if required. It is a
kind of undershot wheel, consisting of an endless chain with a number of paddles
jointed thereto, running over two or more chain wheels, one or one set at either
end of the motor; from the shaft of one of the wheels the power is taken off. The.
motor is generally moored at an angle to the flow of the stream so that each paddle,
immersed receives the benefit of the current at the same time. The paddles are
connected to each other by means of stays to hold them in their right position,
each stay being connected at one end to the axle of one paddle, and the other end
of the stay is movably fastened to the next paddle about three quarters of the way.
up from the centre, so that when the pressure of the water acts on one it acts on
all the paddles.
The motor may, as stated, either be moored at a certain angle to the stream, or
it may be provided with guiding boards which are fixed to the structure on both
sides and in such a manner that they can be depressed and heightened and set at
any angle to the stream. Or the motor may be so arranged with two systems of
paddles that their longitudinal axes form two sides of a triangle, while the third
side or base is open to the flow of the water and the structure is anchored from the
centre of the open side, so that the motor swings into the most suitable position by
the flow of the tide or current.
The endless chain is provided with friction-rollers which move in guides of angle
iron and the lower guides are two sided, as the wheel, being subjected to the pressure
of the water, has a rising tendency.
Figure 1 of the accompanying drawings is a side elevation with part section;
Figure 2 is a cross section on A-B Figure 1 and Figure 3 is a plan of the motor.
Figure 4 shows the arrangement of two systems combined to one apparatus.
The motor consists mainly of a number of paddles a a fixed to an endless chain b
which runs over two or more chain wheels d d the chain being supported in its
whole length by friction rollers ee and guides f. The chain wheels d d' run in a
suitably constructed frame D, which frame or structure is fixed to and supported
by buoys pontoons or barrels E, of suitable size, shape, and number, in order to
keep the whole system floating, and anchored in such a manner that the motor
may follow every change in the tide. The paddles a are movably jointed to their
xles g, the ends of which form the connection between the links of the chain.
The paddles are by means of stays h connected with one another in such a
nanner that one end of each stay h is movably fixed to an axle g and the other
nd is also movably connected to the next paddle about three quarters of the way
p from the centre as shown in Figure 1 so that when the pressure of the water
omes on the paddles they maintain their proper position, and exercise a certain

page_text: pull on each other. In order to get the full benefit of the stream the motor is
placed at an angle to the stream, or the motor may as shown at Figure 3 be
provided with guiding boards i, fixed to the structure D in such a manner, that
they can be either raised or lowered or set at any angle on the axles k which are
screw threaded and movable in nuts k¹ by means of hand wheels and fixed in
proper angular position by check nuts k³.
The motor may also be arranged or constructed as shown at Figure 4 where the
motor consists of a combination of two systems of paddles m and n which form as
it were two sides of a triangle the third side or base being open to the flow of
the water. The whole structure is moored from the centre of the third or open
side o and by the motion of the current itself it swings into the most suitable
position.
в
The guides f for the friction rollers e e may be made of angle iron and the lower
guides fare two sided for the rollers e to work between as the wheel being subjected
to the pressure of the water, has a rising tendency. The power is taken off from
the axles and which are lengthened and provided with means of transmission
such as tooth wheels, belts etc
Having now described the nature of the said Invention and the manner of
carrying the same into effect I declare that I claim as the Invention communicated
to me :-
First: The combination of parts forming the new or improved floating motor
wheel to be actuated by the tides or other flow of water and consisting of a number
of paddles a mounted on endless chains bb' which run on chain wheels d d' the
axles of which serve to transmit the power obtained, all being mounted on frame-
work supported by pontoons or other suitable floating bodies and moored as
required and provided with guide boards i for properly directing the current of.the
water on to the paddles substantially as described and as illustrated by Figures 1, 2
and 3.
Second-The combination of two motors (constructed as firstly claimed but
without the guide boards i) in such a manner that they form an angle to each other
and moored to a common anchor in such manner that the flow of the impelling
water itself always keeps the twin motor in the most suitable position for work, all
substantially as set forth and as illustrated by Figure 4.
In Witness whereof I the said Gerard Wenzeslaus von Nawrocki have hereunto
set my hand and seal this Twentyseventh day of October in the year of our Lord
one thousand eight hundred and eighty three.
HA
NAWDOCKI
ROCKI
GERARD WEN
US TON
ATA WYD