Improvements in Mechanism for Propelling Vessels.
Year: 1897

page_text: Date of Application, 20th Nov., 1897
ALL
1000
Improvements in Mechanism for Propelling Vessels.
I, RUDOLF COUNT WESTPHALEN, of 33A, Rennweg, Vienna III, in the Austrian
Empire, Gentleman, do hereby declare the nature of this invention to be as
follows:-
My invention relates to the mechanism for propelling vessels forming the sub-
ject of my former application No. 12633 dated 21st May 1897 and which comprised
a paddling appliance, which does not act by successive strokes but continuously,
the propeller being formed of a plain flat disc secured in an inclined position to a
revolving shaft arranged cross wise to the desired direction of advance, the said
inclined disc having the lower portion of its half below the shaft dipping into the
water.
Now it has been found in practice that such a propeller, when rapidly rotated,
carries along so much adhering water that it is entirely enveloped whereby it is
rendered ineffective.
The object of my present invention is to overcome this objection by allowing
the adhering water to escape before it is carried over the shaft of the revolving
propeller. This I accomplish by replacing the inclined disc by an inclined ring-
shaped plate, connected by spokes with a suitable nave or boss.
In some cases
I make the ring of a number of flat sectors having alternately opposite inclinations
towards the horizontal axis of the shaft.
торго
I, RUDOLF COUNT WESTPHALEN, of 33A, Rennweg, Vienna III, in the Austrian
Empire, Gentleman, 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 mechanism for propelling vessels forming the sub-
ject of my former Patent No. 12633 dated 21st May 1897, and which comprises
a paddling appliance, which does not act by successive strokes but continuously,
the propeller being formed of a plain flat disc, secured in an inclined position to a re-
Die Q17

page_text: volving shaft arranged crosswise to the desired direction of advance, the said inclined
disc having the lower portion of its half below the shaft dipping into the water.
Now, it has been found in practice that such a propeller, when rapidly rotated,
carries along so much adhering water that it is entirely enveloped whereby it is
rendered ineffective.
The object of my present invention is to overcome this objection by causing
the adhering water to escape before it is carried over the shaft of the revolving
propeller. This I accomplish by replacing the inclined disc by an inclined ring-
shaped plate, connected by spokes with a suitable nave or boss. In some cases,
I make the ring of a number of flat sectors having alternately opposite inclinations
towards the horizontal axis of the shaft. This latter arrangement has this ad-
vantage over the former that the alternate repulsions of the water to the right and
to the left take place in more rapid succession and are of less duration in conse-
quence whereof less vibration is caused.
To enable my invention to be fully understood I will describe it by reference
to the accompanying drawing, in which :-
Figure 1 is an end elevation of a steam-boat, both paddle-boxes being shown
in section, and one end of the shaft being provided with a plane ring-shaped disc,
while the other end of the shaft has secured to it a
sectors having alternately opposite inclinations towards the axis of the shaft:
ring composed of four plane
Figure 2 is a plan view; and
Figures 3 and 4 are side elevations of the two forms of the propeller respectively.
As will be seen by reference to the drawing, the propeller shown on the left
hand side thereof consists of a plane flat ring a connected by spokes 6 to a boss c
in such a manner that the plane of the ring forms an oblique angle with the axis
of the shaft.
In the right hand propeller, the ring is composed of four sectors a¹, a³, a³, a
inclined toward the axis of the boss c in alternately opposite directions at angles
of 45° so that in Figure 4 d, d are salient edges and f, f re-entering edges.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. A propeller for vessels, having a ring-shaped plate so connected by spokes
and a boss to a horizontal shaft arranged cross-wise to the desired direction of
advance, that all parts of the ring are inclined towards the axis of the shaft, sub-
stantially as hereinbefore described and illustrated.
'
+
2. In a propeller of the kind referred to in Claim 1, a flat ring-shaped disc, the
plane of which forms an oblique angle with the axis of the shaft, substantially
as hereinbefore described and illustrated.
3. In a propeller of the kind described in Claim 1, a ring composed of 2" plane
sectors the planes of which are inclined alternately in opposite directions towards
the axis of the shaft, substantially as herein before described and illustrated.
Dated the 4th day of March 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.