Improved Means of Facilitating the Propulsion of Steam Vessels.
Year: 1889

page_text: Date of Application, 16th Aug., 1889
Complete Specification Left, 12th May, 1890-Accepted, 28th June, 1890
PROVISIONAL SPECIFICATION.
Improved Means of Facilitating the Propulsion of Steam Vessels.
I, ADALBERT ANDERL, of 24° Bahnhofstrasse, Schwandorf Bavaria, in the Empire of
Germany, Royal Engineer, do hereby declare the nature of this invention to be as
follows :-
My Invention relates to means or apparatus which I term a steam-jet plough; and
which has for its purpose to force sideways the swell of water piled up ahead of fast
going ships.
It is a known fact, that, at a high speed of the ship, the water becomes piled up
ahead of the vessel owing to the inertia of the water which prevents it being forced
aside rapidly enough by the ship whereby the velocity of the vessel is prejudicially
influenced.
The object of this Invention is to force the swell sideways and to produce a wave-
hollow for the ship moving at full speed so as to assist in the forward motion of the
latter.
The Invention is illustrated in the accompanying drawing, in which figure 1 is a
side view of the steam-jet apparatus, and figure 2 is a plan view of the same.
The steam-jet apparatus consists of a series of nozzles a arranged in groups of two
by two opposite each other; the nozzles, the shape and construction of which is,
dependent on the shape and construction of the ship, communicate through the
steam pipe b with the steam-space of the boiler and they are immersed in front of the
ship for the purpose of forcing very rapidly sideways, by the action of the freely-
escaping steam-jets, the mass of water counteracting the velocity of the ship and of
assisting by these means in the forward motion of the ship. The mouth-pieces are
fastened to the pipe by any suitable means, if required by means of screws c and
then immersed into the swell in front of the ship; after the position of the pipes & has
been fixed by the aid of an iron rod d the apparatus may be put in action at once.
The length of the apparatus, the number, position, size, and distances apart, of the
steam jet nozzles, the depth of immersion, and the right angular position of the nozzles,
are dependent on the construction, size, draught, steam-power, etc., of the ship to
which they are to be adapted.
In order to prevent too great a loss of heat in the steam-pipes, the latter are
protected by insulating layers and furnished with walls of strengthened sheet metal
for resisting the bounding swell. On suitable places in the steam pipe are provided
return-valves through which, when the steam is cut-off, air penetrates into the pipe for
preventing impurities being sucked in.
The working of this device is as follows; the high-pressure steam flows from the
boiler through the pipe b to the steam-jet apparatus where it is divided; the steam then
enters the nozzles a, arranged in groups of two by two, whence it escapes with a
velocity corresponding to its tension and exercising an inductive action upon the
surrounding water combines therewith and carries it along in the given direction in
the form of a gradually increasing cone; finally, the steam condenses in the water.
By the uniform and simultaneous action of the steam jets escaping in groups on both
sides of the apparatus, the swell in front of the ship is forced sideways so as to form
a wave-hollow, whereby the pressure of the water against the bow of the ship is con-
siderably reduced and the velocity of the latter increased.
Dated this 16th day of August 1889.

page_text: Improved Means. of Facilitating the Propulsion of Steam Vessels.
I, ADALBERT ANDERL, of Schwandorf in the Kingdom of Bavaria and Gernian
Empire, 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:—
My invention relates to means or apparatus which I term a steam-jet marine plough,
and which has for its purpose to force sideways the swell of water piled up ahead of
fast-going ships. It is a known fact that at a high speed of the vessel the water
becomes piled up ahead thereof owing to the inertia of the water which prevents it
being forced aside rapidly enough by the vessel, and whereby the velocity of the
vessel is prejudicially influenced.
The object of this invention is to force the swell sideways and to produce a wave-
hollow for the vessel moving at full speed, so as to assist in the forward motion of the
latter.
The invention is illustrated in the accompanying drawings
Fig. 1 is a side view of the steam jet apparatus applied to the bow of a vessel.
Fig. 2 is a plan of the apparatus.
Fig. 3 shows the method of applying the apparatus to a vessel.
Fig. 4 shows a plan of the bow of the vessel with the steam jet apparatus fixed
thereto.
The steam jet apparatus consists of a series of nozzles or mouth pieces a (herein-
after called nozzles) arranged in groups of two by two opposite each other.
The nozzles whose shape and construction depend on the shape and construction of
the ship, communicate through the steam pipes 6 with the steam-space of the boiler,
and they are immersed in the water in front of the ship for the purpose of very rapidly
forcing sideways, by the action of the freely-escaping steam jets, the mass of water,
counteracting the velocity of the vessel and assisting by these means in the forward
motion of the vessel. The nozzles a aro fastened to the pipes by any suitable
means, such as screw-threads and the pipes b, which are curved as shewn, are secured
together at their forward ends by clamp plates and screws c. After the position of the
pipes b has been fixed by the aid of an iron rod d the apparatus may at once be put
in action.
- The length of the apparatus the number, position, size, and distances apart of the
.nozzles a, the depth of immersion, and the proper angular position of the nozzles are
.dependent on the construction, size, draught, steam power &c., of the vessel to which
they are to be adapted. In order to prevent too great a loss of heat in the steam
pipes, the latter are protected by insulating material and strengthened with walls of
sheet metal for resisting the bounding swell. At suitable positions in the steam pipes
valves may be provided, through which, when the steam is cut off, air can enter the
pipes for preventing impurities being sucked in.
The working of the apparatus is as follows: High pressure steam flows from the
boiler through the pipes 6 to the steam jet apparatus, where it is divided. The steam
then enters the nozzles a, arranged in groups of two by two, whence it escapes with
a velocity corresponding to its tension, and exercising an inductive action upon the
surrounding water combines therewith and carries it along in the direction of motion
of the vessel in the form of a gradually increasing cone. Finally the steam condenses
in the water.
By the uniform and simultaneous action of the steam jets escaping in groups on
both sides of the apparatus the swell in front of the ship is forced sideways, so as to
form a wave-hollow, whereby the pressure of the water against the bow of the ship is
considerably reduced and the velocity of the latter increased.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. For forcing sideways, by means of steam-jets, the swell in front of a fast going
ship the herein described means comprising steam pipes b, communicating with a boiler
and extending from the bow of the ship, said steam pipes being provided with mouth
pieces or nozzles a, projecting laterally therefrom, substantially as described, and shown
in the accompanying drawings.
2. Means or apparatus for forcing sideways by means of steam-jets the swell in
front of the bow of a fast going ship, comprising steam pipes 6 communicating with a
steam boiler, secured by clamping plates and screws c and provided with nozzles or
mouth pieces a projecting laterally from the steam pipes, the apparatus being held in
position by a rod d, substantially as described, and shown in the accompanying
drawings.
A. ANDERL,
Per L. W.