An Improvement in Electro Propulsion of Vehicles, or Vessels.
Year: 1895

page_text: Date of Application, 19th Aug., 1895
2011
25.00
JOLL
1000
PROVISIONAL SPECIFICATION.
An Improvement in Electro Propulsion of Vehicles, or Vessels.
I, LUDWIG EPSTEIN, of Rosebank, Park Road, East Twickenham, in the County of
Middlesex, Electrical Engineer, do hereby declare the nature of this invention to be
as follows:-
The difficulty in the use of secondary batteries as a motive power for the propulsion
of vehicles or vessels is that resource has to be made from time to time to charging
stations for recharging such secondary batteries, which is not always possible.
According to my present invention I obviate the necessity of having resource to
charging stations by providing means on the vehicle or vessel itself by which the
secondary batteries can be recharged. For this purpose I so arrange the motor which
is driven by the electricity from the secondary batteries that it can itself be used as a
dynamo machine and I provide means whereby the said motor can be easily
uncoupled from the motor shaft and coupled to a small subsidiary engine by which it.
can be worked as a dynamo to recharge the secondary batteries.
Dated this 19th day of August 1895.
ABEL & IMRAY,
Agents for the Applicant.
I, LUDWIG EPSTEIN, of Rosebank, Park Road, East Twickenham, in the County of
Middlesex, Electrical 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 difficulty in the use of secondary batteries as a motive power for the propulsion
of vehicles or vessels is, that recourse has to be made from time to time to charging
stations for recharging such secondary batteries, which is not always possible.
According to my present invention I obviate the necessity of having recourse to
charging stations by providing means on the vehicle or vessel itself by which the
secondary batteries can be recharged. For this purpose I so arrange the motor which
is driven by the electricity from the secondary batteries that it can itself be used as a
dynamo machine and I provide means whereby the said motor can be easily uncoupled
from the motor shaft and coupled to a small subsidiary engine by which it can
be worked as a dynamo to recharge the secondary batteries.
Fig. 1 of the accompanying drawings is a plan of the underframe of an electrically
propelled carriage arranged according to my invention. Fig. 2 is a side elevation.
A is a secondary battery or accumulator of any known kind which, instead of being
under the body of the carriage as shewn, might in many cases be arranged under
seats. B is an oil or other engine also of any known kind, C its crankshaft ; D is a
dynamo electric machine which can be used as a motor; on its shaft is fitted a sliding
sleeve E, which, by means of a handle F working through suitable gear a fork
lever G, can be slid so as to put a pinion H in gear with a toothed wheel K on the
axle X of the carriage or to take H out of gear with K and to put a wheel L in gear

page_text: with a wheel M on the engine shaft C. In the former case, while H is in gear with K,
the motor D receiving electrical energy from A drives the axle X propelling the
carriage; in the latter case, while L is in gear with M, the engine B drives the
dynamo D generating electricity to charge the battery A. Obviously instead of
the sliding sleeve and pinions, other known clutching arrangements may be employed.
A similar arrangement of engine dynamo motor and accumulator can be applied
on board a vessel, the motor driving a paddle or propeller shaft.
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 :-
On an electrically propelled vehicle or vessel, the combination of a secondary battery,
a dynamo convertible so as to act as a motor, and an engine with gearing arranged
and operating, substantially as described.
ABEL & IMRAY,
Agents for the Applicant.