Improvements in the Electrical Propulsion of Boats and Vessels.
Year: 1893

page_text: Date of Application, 25th Apr., 1893
Complete Specification Left, 25th Jan., 1894-Accepted, 10th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Electrical Propulsion of Boats and Vessels.
We ANTHONY GEORGE NEW and ARTHUR JAMES MAYNE, Electrical
Engineers of Palace Chambers Westminster in the County of London do hereby
declare the nature of this invention to be as follows:-
The object of this invention is to provide a convenient means of applying electric
propulsion to boats, canoes or other craft either temporarily or for a length of time
without necessitating the alterations in construction and arrangement of the boat
or other vessel which are usually required in fitting them with means of electric
propulsion.
For this purpose a motor is designed of great height and length relative to its
width which is extremely narrow. This motor is enclosed in a narrow watertight
case which may or may not form part of the motor, of metal wood or other suitable
material of approximately the same superficial dimensions as the rudder of the
vessel to which the appliance is to be attached. The propeller shaft (furnished
with a watertight packing) projects through this casing carrying the propeller at
its end-the whole arrangement thus resembling in appearance a rudder with a
propeller attached in rear. The case is further provided with two hooks enabling
it to be attached to the staples designed for the reception of the rudder which
last is then replaced by the apparatus which serves both to propel and steer the
vessel.
The electric current may be supplied to the motor either through the hooks, by
which the appliance is as above described attached, or by separate conductors
(which may form the steering ropes) connected with accumulators or other battery
conveniently disposed under the seats or elsewhere within the vessel.
Dated this Dith dow of Amil 1602
ANTHONY G. NEW.
ARTHUR JAS. MAYNE.
COMPLETE SPECIFICATION.
Improvements in the Electrical Propulsion of Boats and Vessels.
We, ANTHONY GEORGE NEW and ARTHUR JAMES MAYNE, Electrical
Engineers, of Palace Chambers, Westminster, in the County of London, 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 to provide a convenient means of applying electric
propulsion to boats, canoes, or other craft, either temporarily or for a length of
time without necessitating the alterations in construction and arrangement of the
boat or other vessel which are usually required in fitting them with means of
electric propulsion.
For this purpose a motor is designed of great height and length relative to its
width which is extremely narrow. This motor is enclosed in a narrow watertight
case which may or may not form part of the motor of metal, wood, or other suitable
material of approximately the same superficial dimensions as the rudder of the
vessel to which the appliance is to be attached. The propeller shaft (furnished
with a watertight packing) projects through this casing carrying the propeller at
its end, the whole arrangement thus resembling in appearance a rudder with a
1

page_text: propeller attached. The case is further provided with two hooks enabling it to
be attached to the staples designed for the reception of the rudder, which last
is then replaced by the apparatus which serves both. to propel and steer the
vessel.
The electric current may be supplied to the motor either through the hooks by
which the appliance is as above described attached, or by separate conductors
(which may form the steering ropes) connected with accumulators or other battery
conveniently disposed under the seats or elsewhere within the vessel.
To clearly explain the invention reference is made to the accompanying drawings
which form part of this Specification, and in which :-
Fig. 1 is an elevation of a combined rudder and motor according to our
invention.
Fig. 2 is an elevation of same on line -- of Fig. 3 which is a plan view of
Fig. 1.
Fig. 4 is a sectional elevation on the line y-y of Fig. 2, and
Fig. 5 is a sectional elevation on line z-z in said figure.
It will be understood that the propeller rudder may be attached to the vessel by
hooks 1, 1, in the usual manner, but it will be found advantageous to make such
hooks adjustable in order that the depth of water in which the propeller works may
be regulated without regard to the load carried. The electrical connections may
also be made through said hooks in a manner any electrician will readily understand,
but in the drawings the connections from the battery carried by the vessel are
shown as passing by the tiller ropes 2, 2, to a plug box 3 on the tiller head 4, while
from said plug box permanent connections pass to the coils on the respective field
magnets 5 and 6 and to the brushes 7, 7, and 8, 8. The magnets 5; 6 are secured
to the yoke 9, and at their inner ends are held by brass or other non-magnetic
plates 10. The armature 11, operating shaft 12, and propeller 13 may conveniently
terminate in a grooved thrust or strain block 14 adapted with parts 15, 16 and 17
to hold sets of balls 18 so as to form a ball bearing thrust or strain block which is
easily removable, and enables the entire armature and shaft, minus the propeller,
to be withdrawn when necessary. The brushes 7, 7, 8, 8, are carried by springs-19
which in turn are carried by pins 20 insulated on a rocking bar 21 which latter is
loosely mounted about the shaft. The springs are elastically held down so as to
maintain contact between the brushes and armature by rubber or like connections 22.
With the exception of the propeller a part of its shaft and the outside of the usual
stuffing box 23 the working parts are all enclosed by a watertight casing 24 which
forms the rudder and is attached to the yoke or frame 9, and which if made of iron
may form part of the magnetic field.
It will be evident that the propeller may be placed at the rear of the rudder but
we believe it will be preferable to have it between the vessel and the casing. The
usual operating switches are of course carried on the vessel.
..!.
Having now particularly. described and ascertained the nature of our said
invention and in what manner the same is to be performed; we declare that what
we claim is:-
1. The improved motor for operating vessels substantially as described.
2. In the propulsion of vessels an electric motor the casing or external con-
figuration of which forms the rudder, substantially as set forth.
3. In the electric propulsion of vessels the means of electrically connecting the
battery carried by the vessel with the motor rudder, substantially as described.
Dated the 24th day of January 1894.
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Chartered Patent Agent,
For the Applicants.