Improvements in the Propulsion of Ships.
Year: 1894

page_text: Date of Application, 14th July, 1894
Complete Specification Left, 16th Apr., 1895-Accepted, 24th May,
1895
PROVISIONAL SPECIFICATION.
Improvements in the Propulsion of Ships.
I, EDWARD JAMES WARMINGTON, of Dengie Rectory, Southminster, in the
County of Essex, England, Clerk in Holy Orders, do hereby declare the nature
of this invention to be as follows:-
This invention relates to the propulsion of ships or vessels, and my object is, to
convert the rotating action of the main propeller shaft, into a reciprocating one,
and thereby prevent breakage, due to the twisting strain on same.
In carrying out the invention, say, to operate an ordinary screw propeller,
I connect to the piston rod of a horizontal engine one end of a shuft or rod so as to
have a reciprocating action, to operate a force pump or pumps, preferably arranged
in the stern of the vessel. This shaft or rod can be extended from the piston rod
of the engine to the pump piston direct I prefer to use the ordinary type of force
pump fitted with valves and capable of compressing fluid, sufficiently to drive an
ordinary rotary motor, arranged in close proximity to the: propeller. The axle of
said motor is supported in suitable thrust bearings and projects through the stern
of the vessel, to carry the screw propeller in the usual way.
It may be here stated that I may use one or more shafts or rods connected with
compound or triple expansion engines according to the power required.
It will easily be seen that a rotary action is only imparted to the propeller shaft"
at the stern of the vessel, thus the unreliable rotary main shafting is entirely
dispensed with, while the steam boilers, and engines' still remain amid-ships.
Should ordinary plunger or reciprocating propellers be used for the propulsion
of the vessel I can connect the shaft or rod beforementioned to same.
W. D. ROWLINGSON,
Ageut for the Applicant..
Improvements in the Propulsion of Ships.
I, EDWARD JAMES WARMINGTON, of Dengie Rectory, Southminster in the
County of Essex England, Clerk in Holy Orders, 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 the propulsion of ships or vessels, and my object is to
convert the rotating action of the main propeller shaft into a reciprocating one,
and thereby prevent breakage due to the twisting strain on same.
In carrying out the invention, Bay, to operate an ordinary screw propeller,
I connect to the piston rod of a horizontal engine, one end of a shaft or rod so as to
have a reciprocating action to operate a force pump or pumps, preferably arranged
in the stern of the vessel. This shaft or rod can be extended from the piston rod
of the engine to the pump piston direct. I prefer to use the ordinary type of
force-pump fitted with valves, and capable of compressing fluid sufficiently to
drive an ordinary rotary motor, arranged in close proximity to the propeller. The

page_text: -
axle of said motor is supported in suitable thrust bearings and projects through
the stern of the vessel to carry the screw propeller in the usual way.
It may be here stated that I may use one or more shafts or rods connected with
compound or triple expansion engines, according to the power required.
But in order that my invention may be better understood reference is made to
the accompanying sheet of drawings, which illustrates the arrangement of the
various parts employed to affect my object.
In the drawings (A) represents a steam engine, arranged say amid-ships, (B) the
piston rod, and (C) the reciprocating shaft or rod for actuating the force-pump (D)
said shaft (C) is suitably supported by bearings similar to (E). (F) is the inlet
to the pump, and (G) is the outlet for the fluid which is forced through the
pipe (H) into the rotary motor (I), and finally discharged through the outlet
pipe (J); (K) is the rotating shaft of said motor which is suitably supported by
thrust bearings (L) and imparts a rotary movement to the propeller (M).
It will easily be seen that a rotary action is only imparted to the propeller shaft
at the stern of the vessel, thus the unreliable rotary main shafting is entirely
dispensed with, while the steam boilers and engines still remain amid-ships.
Should ordinary plunger or reciprocating propellers be used for the propulsion
of the vessel, I can connect the shaft or rod before mentioned to same.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed 1 declare that what I
claim is
Firstly. In the propulsion of ships or vessels the use of a reciprocating shaft or
rod in the place of the main rotary shafting.
Secondly. In the propulsion of ships or vessels the combination and arrangement
of the various parts employed to convert the rotating action of the main propeller
shaft into a reciprocating one, substantially as herein set forth.
Dated the 13th day of April 1895.
W. D. ROWLINGSON,
172, Queen Victoria Street, London, E.C., Agent for the Applicant.