Improvements in Means or Apparatus for the Propulsion of Boats or Vessels by Jets of Water.
Year: 1894

page_text: Date of Application, 23rd May, 1894
Complete Specification Left, 25th Feb., 1895-Accepted, 23rd May, 1895
Improvements in Means or Apparatus for the Propulsion of Boats
or Vessels by Jets of Water.
I JULES HIPPOLYTE CORTHESY of 3, Montague Place, Richmond Hill, in the
County of Surrey, Private Secretary do hereby declare the nature of this invention
to be as follows:
My invention relates to improvements in means or apparatus for the propulsion
of boats or vessels by jets of water.
For the purpose of my invention I provide two or more tubes or pipes of suitable
area and section, and which are jointed to the outlet of a main pipe through which
water is forced, whereby the stream of water instead of being, as heretofore, a
single one is split up or divided into two or more jets; and a continuous rotary
motion is imparted thereto. The object of this rotary motion is to cause the jets
of water to strike at different points in succession the water upon which the vessel
floats.
The apparatus at the point of junction with the main pipe consists of one tube
of about the same diameter as the main pipe, and from this tube there are continued
two or more branches from which the jets of water emerge. This apparatus is
covered all round by an outer shell, cylindrical or conical in shape, in order to
facilitate the rotary movement. The outlet end of this apparatus is covered with
a plate slightly convex in shape, with holes into which the ends of the branch
tubes fit.
The apparatus may be placed partly outside and partly inside the vessel or entirely
outside.
The axle of this apparatus is parallel to the longitudinal line of the vessel,
and the branch tubes, from which come the jets, must be for some distance from
their outlet, parallel to the axle of the apparatus.
The outlets of the jet tubes must have the sectional shape, required to be given
to the jets.
The continuous rotary motion of the apparatus may be produced by any device
worked by steam, water or any other means.
Dated this 23rd day of May 1894.
•
COMPLETE SPECIFICATION.
Improvements in Means or Apparatus for the Propulsion of Boats
or Vessels by Jets of Water.
1 JULES HIPPOLYTE CORTHESY of 3, Montague Place, Richmond Hill in the
County of Surrey, Private Secretary 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 improvements in means or apparatus for the propulsion
of vessels br iets.

page_text: For the purpose of my invention I provide two or more tubes or pipes of suitable
area and section which are jointed to the outlet of a main tube or pipe through
which fluid is or may be forced (such for instance as the outlet pipe from pumping
machinery) whereby the stream of fluid instead of being as heretofore a single one
is split up or divided into two or more jets; and a continuous rotary motion is 5
imparted thereto.
It may be remarked here that in the Provisional Specification and the "title"
under this application for Letters Patent the character of the jets employed are
alluded to as being "of water." Attention is also drawn to the obvious fact that
the pumping machinery is not that which is of the subject matter of this invention, 1
and the state of the art shows that hydraulic pumping machinery and air compressor
machinery may be used as vehicles for the propulsive force. Therefore in the
following particular description I qualify and denominate the jets as "jets of
fluid" (aqueous or aeriform or mixed aqueous and aeriform jets).
The object of the rotary motion of the dividing tubes is to cause the jets to strike 1
or impinge at different and changing points, successively, of the water upon which
the vessel is bourne and upon which the propulsive force of the projected or
driven fluid is exerted.
In the drawings accompanying this Specification:
Fig. 1, illustrates in central longitudinal section, means for the application of 2
this invention.
Fig. 2, is an end view taken at A A, of Fig. 1.
Fig. 3, is an isometric view of the dividing tubes as shown in Fig. 1.
Fig. 4, shows a variation of the application of the jet pipes or tubes in double
spiral disposition (but it might be three or more) the ends thereof terminating in
lines of parallelism with the longitudinal axis.
Fig. 5, shows a further variation of the application of the jet pipes or tubes
arranged in conical form.
tube c.
a, represents the main pipe which is fixed rigidly and is coupled at b, to the
The tubes a, and c, are supported in fixed bearings such as d, d¹, but so
that the tube c, and its dividing tubes may be free to turn. e indicates a driving
gear, or pulley it might be, for giving rotary motion to the tube c.
From the tube c there are continued two or more branches c¹, c², from which the
jets of fluid will emerge.
The jets-tubes of the apparatus can be covered or sheathed all round by an
outer shell in order to facilitate rotary movement and to prevent entanglement with
floting substances.
The outlet end is covered with a plate or plates f,f', and in order to support
the extremity of the apparatus when necessary, a central spindle g, supported upon
an end frame g', may be fitted so that a supporting bearing upon the spindle g, may
be afforded to the discharge portion of the rotary tubular device.
The apparatus may be placed partly outside and partly inside the vessel or
entirely outside and may be arranged in twin construction one on each side of the
vessel.
The parallelism of the discharge orifices with the longitudinal axis of the vessel
will be maintained in all cases and the outlets of the jet tubes must have the sectional
shape which is required to be given to the jets.
The continuous rotary motion of the apparatus may be produced by an engine
or device worked by steam, water or other power.
The bearing d', will be properly packed to prevent water entering into the vessel
around the tube c.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The improved means for the propulsion of vessels by means of jets forced out

page_text: from a system or arrangement of pipes to which pipes a continuous rotary motion
is imparted substantially as and for the purpose herein set forth and illustrated by
the drawings.
100 11
1007
J. H. CORTHÉSY,
Per Walter A. Barlow,
7, John Street, Bedford Row, London, W.C.,
Consulting Engineer and Patent Expert.