Improved Method of and Machinery for Propelling Vessels.
Year: 1891

page_text: Date of Application, 7th Dec., 1891
Complete Specification Left, 7th Oct., 1892-Accepted, 12th Nov., 1892
PROVISIONAL SPECIFICATION.
Improved Method of and Machinery for Propelling Vessels.
I, FREDERICK LAMPLOUGH, of 86 London Street, Greenwich, Kent, Engineer,
do hereby declare the nature of this invention to be as follows:-
The object of this invention, is improved method of and machinery for propelling
vessels.
For the purpose of my invention, I arrange a shaft with a series of cranks,
from which propeller blades depend, the rods or bars by which the blades are
connected having frames attached and loosely mounted to the main frame to cause
the blades to move somewhat elliptically for entering the water on edge, and to
gradually approach a true vertical position with horizontal bottom travel for
exerting full power for propulsion, the blades retiring out of the water in the same
order.
I purpose arranging the propulsion apparatus near the bottom of the vessel, in
an air tight dome, the bottom being open for the free action of the blades on the
water from above the surface of the water determined by the pressure of air in
the dome.
The propeller, if desired, may be arranged at the sides or stern to act from the
natural water level.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Frederick Lamplough.
COMPLETE SPECIFICATION.
Improved Method of and Machinery for Propelling Vessels.
I, FREDERICK LAMPLOUGH, of 86 London Street, Greenwich, Kent, Engineer,
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 :-
The object of this invention, is improved method of and machinery for propelling
vessels.
For the purpose of my invention, and as I represent in the accompanying
drawings Figures 1 and 2 part elevation of front and side, I arrange a shaft A
with a series of cranks B, B, from which propeller blades C, C, depend, the rods
or bars D, D, by which the blades C, C, are connected having links or frames E, E,
attached and loosely mounted to the main frame F to cause the blades C, C, to
move somewhat elliptically for entering the water on edge, and to gradually
approach a true vertical position with horizontal bottom travel for exerting
full power for propulsion, the blades retiring out of the water in the same
order.
I purpose arranging my propulsion apparatus near the bottom of the vessel, in
an air tight dome, the bottom being open for the free action of the blades on the
water from above the surface of the water determined by the pressure of air in
the dome.
The propeller, if desired, may be arranged at the sides or stern to act from the
natural water level.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
The invention of propelling apparatus consisting of a many crank shaft A,
rods D, D, working from said cranks, the motions of the blades being governed by
links E, E, connecting said rods D, D, to the main frame F, as an for the purposes
specified.
way of October 1892.
H. GARDNER,
Patent Agent, 166, Fleet Street, London
Agent for the said Frederick Lamplough.