Improvements in Propelling Apparatus for Ships or Vessels.
Year: 1893

page_text: Date of Application, 15th June, 1893
Complete Specification Left, 1st July, 1893-Accepted, 5th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in Propelling Apparatus for Ships or Vessels.
THOMAS ARMSTRONG of No. 150 Battersea Park Road, London, S.W.
Gentleman, do hereby declare the nature of this invention to be as follows:-
This invention consists of a propeller or propelling apparatus formed of one, two
or more fins or blades each constituting a part or section of a hollow cone,
preferably five-eighths of a hollow cone.
These fins or blades may be made in any size, in sections or otherwise and of
metal or other material and attached longitudinally to and at the end or other part
of the shaft or countershaft, preferably by a boss, tube or cavity through which
the shaft or countershaft passes wholly or partially and is secured by nuts, keys,
pins or other means.
This propeller rotates by and with the shaft or countershaft and is designed for
propelling, turning or moving ships or vessels forward, astern or otherwise.
Dated this 15th day of June 1893.
THOS. ARMSTRONG.
COMPLETE SPECIFICATION.
Improvements in Propelling Apparatus for Ships or Vessels.
I THOMAS ARMSTRONG of No. 150 Battersea Park Road, London S.W.
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 a propeller or propelling apparatus formed of one, two
or more fins or blades each constituting a part or section of a hollow cone
preferably five eighths of a hollow cone.
The fius or blades may be made in any size in sections or otherwise and of metal
or other material and attached longitudinally to and at the end or other part of
the shaft or countershaft preferably by a boss, tube or cavity through which the
shaft or counter shaft passes wholly or partially and secured by nuts, keys, pins or
other means.
This propeller rotates by and with the shaft or countershaft and is designed for
propelling, turning or moving ships or vessels forward, astern or otherwise.
In order that my invention may be more readily understood and carried into
effect I will proceed to describe the same with reference to the accompanying
drawings in which
Fig. 1 is a side view of the propeller.
Fig. 2 is a perspective end view.
A Figs. 1 and 2 are the fins or blades.
B Figs. 1 and 2 represents the boss and
C Figs. 1 and 2 is the shaft or countershaft to which the propeller is fixed and
by and with which it is rotated and rotates.
I form each fin or blades A approximately five eighths of a hollow cone but I
reserve the power of making such fins or blades in any smaller or larger segments
or sections of a hollow cone and of varying or altering the inclination of each fin or
blade.
Such fins or blades may be cast with the boss as in one piece or otherwise.

page_text: I also desire to reserve the power to cut away or round off the corners or angles
of each fin or blade and to shorten or lengthen the apparatus and to increase or
lessen the diameter proportionately to suit the space, room construction or
requirements of ships or vessels of any class, size or tonnage.
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
1. A propeller or propelling apparatus formed of one two or more fins or blades
each constituting approximately a section or segment of a hollow cone.
2. A propeller or propelling apparatus formed as described attached longi-
tudinally to or in a line with and rotating by and with the shaft or countershaft.
Dated this 1st day of July 1893.
LE FEVRE & Co.,
26, Budge Row, Cannon Street, E.C., Agents for the Applicant.