Improved Device for Propelling Boats and other like Vessels.
Year: 1897

page_text: Date of Application, 11th Jan., 1897-Accepted, 17th Apr., 1897
COMPLETE SPECIFICATION.
Improved Device for Propelling Boats and other like Vessels.
I, HANS BIELFELDT FEDDE, of Friedrichstadt on the Eider in the German
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 :-
This invention consists of an improved device for propelling boats and other like
vessels which by means of a simple lever action sets in rotation the driving shaft of
the vessel connected therewith, whereby the person using the motor can assume a
sitting position and lean with the back against a firm support.
On the accompanying sheet of drawings is shown by way of example my improved
device applied to a propelling screw. Figures 1 and 2 are plans showing the
mechanism in its two opposite positions. Figure 3 is a side view of the same with
the lever mechanism removed.
The apparatus consists of a wheel a formed with ratchet teeth on one side and on
the other formed as a bevelled wheel, gearing with a smaller bevelled wheel c.
The wheel a turns on an axle b, and the wheel c is rigidly fixed on the driving
shaft d of the vessel operated, so that on the rotation of the wheel a, the driving or
screw shaft is rotated faster or more slowly according to the action of the lever.
For actuating the wheel a, an arrangement of levers is employed worked through
the pedals e, el. AT shaped lever f pivoted at its angle on the axle b, and provided
at its foot with a pawl g, engaging with the ratchet teeth of the wheel a, is pivoted
to the pedals e el, by means of pins ff. The elbow piece h in rigid connection
with the pedal e' is connected by means of a link rod h¹ with one end of another
lever i pivoted at or near its centre on the axle b, the other end of which bears a
pawl g, which like the pawl g, engages with the ratchet teeth of the wheel a.
Moreover, the two pedals e e¹ are linked together by means of the lever k¹ pivoted
at the fixed point k. The mechanism is brought by means of the pedal e, from the
position shown by Figure 1, into that shown by Figure 3, the pawl g driving
the wheel a in the direction of the arrow c, while the pawl g' slides over the ratchet
teeth in the opposite direction, the lever k¹ ensuring that the two pedals shall be
parallel to one another. The pedal e¹ now comes into action, and the mechanism is
again brought into position of Figure 1 during which by means of the lever with
pawl gl, the wheel a in like manner is turned in direction of the arrow x, while the
pawl g slides over the ratchet teeth. It thus follows that the wheel a is kept
in rotation, and therefore also the driving shaft d which carries a screw propeller
or the like.
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 propelling device for boats and other like vessels, consisting of a driving
wheel a, provided with ratchet teeth, and set in direct rotation by means of two
suitable rocking levers carrying pawls so arranged that only one of the pawls is
engaged with the teeth of the ratchet wheel at one time, while the other slides
over the teeth so as to be ready to take up the work of the first at the end of
the stroke, substantially as described.
2. In the device claimed under 1, the arrangement of a T shaped lever, mounted

page_text: on the axle b and joined by link rods to the pedals e e', and of a companion lever i
similarly mounted on the axle b, joined by an elbow-piece h and link rod h¹, with
the pedals e e, the free end of said lever i as well as the foot of the lever f being
furnished with a pawl, and the said pedals being kept parallel to one another
by means of the connecting lever pivoted at the fixed point k, substantially as
described.
ليوم
1
1000
STANLEY, POPPLEWELL & Co.,
7 & 8, Southampton Buildings, Chancery Lane, London,
Chartered Patent Agents.