IMPROVEMENTS IN MACHINERY OR APPARATUS EMPLOYED FOR PROPELLING SHIPS OR VESSELS, SUCH IMPROVEMENTS BEING ALSO APPLI- CABLE AS AN AUXILIARY MEANS FOR IMPARTING MOTION TO THE SAME."
Year: 1879

page_text: LETTERS PATENT to Daniel Henry Sisson, of Goole, in the County of York, for
the Invention of "IMPROVEMENTS IN MACHINERY OR APPARATUS EMPLOYED
FOR PROPELLING SHIPS OR VESSELS, SUCH IMPROVEMENTS BEING ALSO APPLI-
CABLE AS AN AUXILIARY MEANS FOR IMPARTING MOTION TO THE SAME."
PROVISIONAL SPECIFICATION left by the said Daniel Henry Sisson at the
Office of the Commissioners of Patents on the 9th September 1879.
DANIEL HENRY SISSON, of Goole, in the County of York. "IMPROVEMENTS IN
MACHINERY OR APPARATUS EMPLOYED FOR PROPELLING SHIPS OR VESSELS, SUCH
IMPROVEMENTS BEING ALSO APPLICABLE AS AN AUXILIARY MEANS FOR IMPARTING
MOTION TO THE SAME."
My Invention is particularly applicable as an auxiliary power for propelling
sailing vessels, such as coasters and fishing boats, but it may be applied for the same
purpose to steam vessels in order, for example, to render it unnecessary to specially
get up steam for driving them a short distance.
I mount the propeller on framework which is hung on or suspended from the
driving shaft, so that it can be swung up out of the water when not required.
I operate the screw propeller from the deck by steam or other power, such as a
steam winch on deck or other engine on or just below the deck.
The rotary motion is imparted to the propeller shaft from the driving shaft by
crank, eccentric, or equivalent means. A suitable mode is to form the outer end of
the propeller shaft with a crank and with an outer crank pin, and to impart motion
thereto by rods from corresponding crank disc and eccentric on the end of the
driving shaft.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Daniel Henry Lisson in the Great Seal Patent Office on the 9th March
1880.
DANIEL HENRY SISSON, of Goole, in the County of York. "IMPROVEMENTS IN
MACHINERY OR APPARATUS EMPLOYED FOR PROPELLING SHIPS OR VESSELS, SUCH
IMPROVEMENTS BEING ALSO APPLICABLE AS AN AUXILIARY MEANS FOR IMPARTING
MOTION TO THE SAME."
My Invention is particularly applicable as an auxiliary means for propelling
sailing vessels, but also it may be applied in the same capacity to steam vessels.

page_text: My Invention consists of a propeller so arranged that motion may be imparted
thereto from the deck by means of a suitable engine, or by hand. The apparatus is
so arranged that the propellor can be brought into operation in a very short space
of time, and in a similar space of time may be arrested in its operation. The pro-
pellor is mounted on framework so arranged that it can be immersed into the water
for propelling purposes, or withdrawn clear of the water and brought into a position
in which it is no impediment to the ordinary movement of the vessel, and without
danger of damage to the apparatus. The required rotary motion is transmitted to
the propellor by means of a crank, eccentric, or other equivalent means.
And in order that my Invention may be more completely understood reference is
given to the accompanying Drawings and to the letters and marks thereon.
danger of damage to the apparatus. The required rotary motion is transmitted to
the propellor by means of a crank, eccentric, or other equivalent means.
And in order that my Invention may be more completely understood reference is
given to the accompanying Drawings and to the letters and marks thereon.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a side elevation, and Fig. 2 a front elevation of my propelling apparatus
with driving shaft above deck; Figs. 3 and 4 are respectively a side and front
elevation of the same with driving shaft below deck.
a represents a portion of the stern of a vessel; b is the propellor, which consists
of two or more twisted blades, the number of such blades varying in accordance with
the construction, speed, or purpose for which the vesel is employed; c is the driving
shaft, and d the deck of the vessel. The driving shaft c may be carried along the
top of the deck to the motor, as shewn at Figs. 1 and 2, or below the deck as shewn
at Figs. 3 and 4. The propellor bis hung by means of rods e upon the stern pipe
where the shaft passes through. The propellor may be drawn out of the water into
the position shewn by dotted lines at Fig. 2 by any ordinary means, and can be
lowered again to any angle or position by such means in a very short time. The
required rotary motion is imparted to the propellor from any class of engine, such
as steam winches on deck or engine below or on deck. Motion is transmitted from
the shaft c by means of the disc plate f, connecting rod g, and crank h, and in order
to assist in passing over the centres I employ an additional crank or cranks or
eccentrics i, connecting rod j, and eccentric k, the eccentric being keyed onto the
driving shaft. is a support for the apparatus when working, and may be lifted
, out of the way at any time when required.
The propellor may be retained in position by side chains or ropes, also instead of
imparting motion through the medium of cranks and eccentrics, ropes, straps, bands,
or their equivalents may be employed..
Having now described the nature of my said Invention, and described by the aid
of Drawings how the same may be carried into practice, I would have it understood
that I do not limit myself to the precise details or configuration of the parts I have
described and shewn, as the same may be varied or modified without departing from
the nature of my said Invention, but what I'do claim and desire to be secured to me
by Letters Patent is,―
The arrangement and application of propellor and parts connected therewith for
propelling ships or vessels, or as an auxiliary means for imparting motion to the
same, arranged and applied substantially as herein set forth.
In witness whereof, I, the said Daniel Henry Sisson, have hereunto set my
hand and seal, this Eighth day of March, in the year of our Lord One
thousand eight hundred and eighty.
DANIEL HENRY SISSON. (L.S.)