Improvements in the Application of Power to Paddle Wheels and Screw Propellers.
Year: 1891

page_text: Date of Application, 18th Nov., 1891
Complete Specification Left, 30th Mar., 1892-Accepted, 14th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Application of Power to Paddle Wheels and
Screw Propellers.
I, HUGH MCINTYRE, of 6 Oswald Street, Glasgow, Lanarkshire, Marine
Surveyor, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the application of power to paddle
wheels and screw propellers, and has for its object the immense saving of weight of
machinery and boilers, and great saving of fuel, with accelerated speed.
The invention consists in the application of high speed engines through gearing,
the engine being driven at a greater speed, and the shaft at a less speed.
Dated this 17th day of November 1891.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.
COMPLETE SPECIFICATION.
Improvements in the Application of Power to Paddle Wheels and
Screw Propellers.
1, HUGH MINTYRE, of 6 Oswald Street, Glasgow, Lanarkshire, North
Britain, Marine Surveyor, 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 relates to improvements in the application of power to paddle
wheels and screw propellers and has for its object the immense saving of weight of
machinery and boilers, and great saving of fuel with accelerated speed.
The invention consists in the application of high speed engines through gearing,
the engine being driven at a greater speed and the paddle or propeller shaft at a
less speed.
In order that my invention may be properly understood and readily carried into
effect I have hereunto appended an explanatory sheet of drawings, in the several
figures of which corresponding parts are marked with the same letters of
reference.
Figure 1 is a side elevation showing my improvements as applied to a triple
expansion horizontal engine of a paddle steamer.
Figure 2 is a plan of the same.
Figure 3 is a view taken athwartships showing my improvements as applied to a
triple expansion vertical engine also of a paddle steamer.
Figure 4 is a plan of the same.
In Figures 1 and 2, A is the driving shaft which imparts motion through the
pinion wheel B which gears into the large shrouded spur wheel C secured to the
paddle wheel shaft D, the spur gearing being placed centrally on the shafts A
and D.
In Figures 3 and 4 the gearing is the same as described with reference to
Figures 1 and 2, but in lien of being placed centrally on the shafts A and D it is
placed at either end.
In place of having the teeth of the spur wheel shrouded they may be helical,
frictional, or rack shaped.
It is to be understood that although I have described and shown in the drawings
my improvements as applied to paddle steamers, they may be applied to steamers
having screw propellers.

page_text: It is also to be understood that two independent engines might be used so tha
one might be stopped or reversed while the other is going.
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
claim is:-
:-
The application of power to addle wheels or screw propellers substantially in
the manner and for the purposes herein before described and shown on the accom
panying sheet of drawings.
Dated this 29th day of March 1892.
BOTTOMLEY & LIDDLE,
154, St. Vincent. Street, Glasgow, Applicant's Agents.