Improvements in the Propulsion of Ships and in Apparatus therefor.
Year: 1891

page_text: Date of Application, 6th Feb., 1891
Complete Specification Left, 21st Nov., 1391-Accepted, 24th Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Propulsion of Ships and in Apparatus
therefor.
1, ALEXANDER VOGELSANG, of Brooklyn, in the State of New York, United
States of America, at present residing at Tegernsee, Bavaria, in the Empire of
Germany, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to the propulsion of ships by means of jets of water.
In carrying out my invention I use two or more jets of water, which jets
are advantageously of relatively small sectional area and of relatively high
velocity, and in order that the jets shall constantly act upon comparatively
undisturbed water, that is to say, upon water which has not acquired velocity
owing to the jets being constantly directed in one line I arrange the nozzles
through which the jets issue in such a manner that they may be revolved around
an axis for delivering the jets in circular paths.
Dated the 6th day of February 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Propulsion of Ships and in Apparatus
therefor.
1, ALEXANDER VOGELSANG, of Brooklyn, in the State of New York, United
States of America, at present residing at Tegernsee, Bavaria, in the Empire of
Germany, 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 :-
My invention relates to the propulsion of ships by means of jets of water
ejected from the vessel in an opposite direction of its intended course against the
water of flotation.
In carrying out my invention I use two or more jets. of water and in order that
the jets shall constantly act upon comparatively undisturbed water, that is to say,
upon water which has not acquired velocity, owing to the jets being constantly
directed in one line, I arrange the nozzles through which the jets issue in such a
manner that they may be revolved around an axis for delivering the jets in
circular paths.
To enable my invention to be fully understood will describe the same with
reference to the accompanying drawing, in which,
Figure represents in sectional side elevation so much of a ship or vessel as is
necessary to illustrate the application of my invention thereto.
Figure 2 is an end view hereinafter referred to.
a indicates the hull of the vessel, and a pipe which communicates with a
centrifugal or force pump, or any other suitable water forcing device for raising
and discharging water. is a pipe which forms a continuation of the pipe b and
which is mounted in a stern tube and thrust-bearing similarly to the ordinary
propeller-shaft of a stern ship, in order that it can be rotated.
C
e, e are tubes or nozzles projecting from the outer end of the pipe and serving
to cause the water forced through the said pipe to issue therefrom in the form of
.

page_text: powerful jets, the said nozzles being equidistant from the axis of the pipe b' as
shewn most clearly in Figure 2.
is a stuffing box for making a watertight joint between the pipes b and b¹.
9. g are gear-wheels, the former of which is secured to the pipe 6', whilst the
latter is secured to a shaft to which rotary motion is imparted by any suitable
motor in order to cause the rotation of the pipe ¹.
i is a casing which surrounds the nozzles e and serves to prevent the same from
being damaged by contact with anything floating in the water, and jis a cone
which is advantageously placed between the nozzles to prevent the formation of a
partial vacuum as the vessel moves through the water. The operation of the
apparatus herein before described is as follows, that is to say, water is forced
through the pipes, to the nozzles e, e from which it issues in powerful jets,
and at the same time rotary motion is imparted to the pipe causing the
outlets or nozzles to revolve so that the jets constantly act against undisturbed
water.
In the drawing I have only shewn two nozzles applied to the pipe b pointing in
a direction parallel to the longitudinal axis of the vessel but it is understood that
any other number of nozzles may be employed and that they may be pointed at an
angle or various angles to the longitudinal axis of the vessel.
Although I have only described the application of a single series of jets it is to
be understood that I may employ a duplicate set, viz., one set on each side of the
stern, or the jets may be placed at any other suitable parts of the vessel. It is
also obvious that suitable jets are employed, for instance, at the bows of the vessel
and at other suitable parts, in a well known manner, in order to facilitate the rapid
manoeuvring of the vessel independently of the rudder.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
(1.) The improvements in the propulsion of vessels by means of water-jets
consisting in causing the jets (or each series of jets when two or more series are
employed) to revolve or move around a common axis, for the purpose specified..
(2.) The improvements in the propulsion of ships by means of water-jets,
consisting in mounting the nozzles through which the jets issue upon or in
connection with the extremity of a rotating pipe through which the water for
supplying the jets passes, whereby, when water is issuing through the nozzles and
the pipe is rotating, the jets will constantly act upon undisturbed water, substantially
as described.
Dated this 1nt I
CAT
1001
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.