Improvements in Propellers for Vessels Driven by Steam or other Motive Power.
Year: 1899

page_text: Date of Application, 10th Nov., 1899
Complete Specification Left, 28th Feb., 1900-Accepted, 31st Mar., 1900
PROVISIONAL SPECIFICATION.
Improvements in Propellers for Vessels Driven by Steam or other
Motive Power.
I, WILLIAM SMITH, of No. 11, Blythswood Drive, Paisley, in the County of
Renfrew, Scotland, Ship-Master, do hereby declare the nature of this invention
to be as follows:-
My invention consists of a propeller of two or more short tubes or cylinders
fastened on to short blades, the tubes or cylinders and blades may be cast in
one. The said tubes or cylinders to have lips projecting either on the fore or
after parts, or both, said lips to be in circumference the half (more or less) of
the circumference of the tubes or cylinders, in some cases the said lips may be
dispensed with, said blades to be fastened on to a boss or nave the blades and
boss or nave may be cast in one, the boss, or nave and blades is old, the blades
and tubes or cylinders to be set obliquely on to the said boss or nave, the whole
propeller to be immersed in the water and rotated by an engine or other motive
power. My said invention relates to improvements, in propeller's for vessels
driven by steam or other motive power, and has for its object the construction
of a simple form of a propeller which does not consist in complicated mechanism
and is very powerful in propelling the vessel to which it is applied.
D
1000
WILLIAM SMITH.
Improvements in Propellers for Vessels Driven by Steam or other
Motive Power.
WILLIAM SMITH, Ship-Master, 11, Blythswood Drive, Paisley, N.B., do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to improvements in propellers, for vessels driven by
steam or other motive power, and has for its object the construction of a simple
form of a propeller which does not consit in complicated mechanism, and having
little or no side thrust makes it very powerful in propelling the vessel to which
it is applied.
In order that my invention, may be clearly rendered reference may be had to
the accompanying sheet of drawings, in which Fig. 1, is a front view, Fig. 2
a side view, of the improved, propeller and Figs. 3 & 4 sectional, elevations.
Similar lotters of reference are used to indicate, like parts in all four views.

page_text: In constructing a propeller according to my invention I employ to or more tubes
or cylinders either round or oval, fastened on to stumps of blades, the stumps
of blades and tubes may be cast in one, in Fig. 1 & 2.a is a lip half the circum-
ference (more or less) of the tubes, in some cases said lips may be dispensed with,
b tubes or cylinders, o flanges showing one way in which the tubes may be
fastened to the stumps of blades & the boss or nave, e the stumps of blades, f angle
of tubes which may be varied as, desired, the action is as follows the propeller
to be fastened on to a shaft and rotated by a steam engine or other motive power,
the speed of the vessel to which it is applied, depends on the angle of the tubes
and the speed in which the propoller is rotated in the water, I do not comprise
in my invention any form of boss or nave short blades or stumps of blades.
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 :-
First, A propeller with two or more tubes or cylinders fastened on to stumps
of blades, or stumps of blades and tubes cast in one substantially as herein
described.
Second, A propeller with two or more tubes or cylinders with lips on the fore
or after parts or both, or without lips, substantially, as herein described and
shown.
Third, A propeller with two or more tubes or cylinders either round or ovai
and set to any desired angle, substantially as herein described with reference
to the appended sheet of drawings.
Dated this 27th day of February 1900.
WILLIAM SMITH,
Applicant.