Improvements in Electrically Propelled Carriages for Common Roads.
Year: 1894

page_text: Date of Application, 30th Nov., 1894
Complete Specification Left, 30th Sept., 1895-Accepted, 2nd Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in Electrically Propelled Carriages for Common
Roads.
I, FRANK KING of 4 Great Winchester Street in the City of London,
Engineer do hereby declare the nature of my invention to be as follows:-
My invention relates to electrical self-contained carriages for common roads; that
is, carriages which themselves carry the source of electricity and the motor, or
motors, and the object of my invention is to make the manoeuvering and steering
of such carriages more efficient and effective than hitherto. According to my
invention I attach both the driving and steering arrangements to the forward or
leading axle, or wheels, so that when the carriage is travelling the fore-carriage
has a positive travelling motion in a direction dependent upon the angle of the
driving, or leading wheels to the longitudinal line of the carriage. The motor or
motors for driving the vehicle are carried on an arrangement of frame which acts
radially from the centre guiding turntable so that the movements necessary for the
steering can be effected by mechanical, or electro-mechanical means, without
interfering with the point or points of attachment between the motor, or motors,
for driving and the transmission gear and axles or wheels.
Dated this 30th day of November 1894.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, Agents.
COME LEIE
Improvements in Electrically Propelled Carriages for Common
Roads.
I, FRANK KING of 4 Great Winchester Street in the City of London,
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 :-
My invention relates to electrical self-contained carriages for cominon roads; that
is carriages which themselves carry the source of electricity and the motor, or
motors, and the object of my invention is to make the manoeuvering and steering
of such carriages more efficient and effective than hitherto. According to my
invention I attach both the driving and steering arrangements to the forward, or
leading, axle, or wheels, so that when the carriage is travelling, the fore-carriage
has a positive travelling motion in a direction dependent upon the angle of the
driving, or leading wheels to the longitudinal line of the carriage. The motor or
motors for driving the vehicle is or are carried on an arrangement of frame which
acts radially from the centre guiding turntable, so that the movements necessary
for the steering can be effected by mechanical or electro-mechanical means without
interfering with the point, or points, of attachment between the motor, or motors,
for driving and the transmission gear and axles, or wheels.

page_text: will further describe my invention with reference to the accompanying
drawings;
Figure 1 of which represents in longitudinal section the framing and gear of an
electrically propelled carriage constructed according to my invention. Figure 2 is
a plan and Figure 3 a transverse section of the same.
Figure 4 is a plan shewing a modified arrangement of gearing for transmitting
the driving power to the driving axle.
A are the fore wheels of the carriage, the axle B of which is preferably in two
parts as shewn in Figure 3 each part being mounted in bearings C capable of
sliding in horn plates D, bolted to the steering turntable, or fore-carriage E,
springs F being provided between the bearings C and the horn plates to give
resiliency to the vehicle.
Loosely mounted on the parts of the axle B is a worm wheel G carrying two
bevel wheels H one of which is shewn by dotted lines in Figure 3, gearing with
bevel wheels H2 fast on the two parts of the axle B, thereby constituting a
compensating gear so that by the revolutions of the worm wheel G rotation will
be imparted, through the gearing H H² to the wheels A to propel the carriage,
and when steering or turning, the carriage round a corner one of the wheels A can
travel faster than the other wheel to compensate for the difference between the
curves in which the two wheels travel. K is the driving electric motor the shaft
of which carries a worm I gearing with the worm wheel G. The motor K is
carried partly on a frame L projecting from a casing or cover L² which encloses
the worm wheel G and worm I, and is mounted on the axle B, the said motor being
also attached by bolts M to another frame N which is connected at one end to the
horn plates D and supported at its opposite end on a wheel O arranged to run on
tracks, or channel irons, P bolted to the framing A² of the carriage. The frame N
also carries the steering motor Q the shaft of which is provided with a worm R
gearing with a worm wheel S mounted loosely on a stud T. Formed in one with,
or attached to the worm wheel S, is a pinion U, gearing with a segmental rack U2
on one of the channel irons, or tracks P the said rack being an arc of a circle the
centre of which is the axis V on which the fore carriage turns. To steer, or divert,
the carriage from the course in which it is travelling electric current is turned, or
switched, onto the motor Q whereupon rotation is transmitted through the worm R,
to the worm wheel S, and pinion U, and as the said pinion is in gear with the
segmental rack U2 the said pinion will be caused to travel along the said rack and
turn the fore carriage, and the parts carried thereby on the axis V, the fore
wheels A being thus turned so as to divert the carriage from its course, either to
the right, or to the left, according to the direction in which the motor Q is caused
to turn. It will be seen that the leading axle B, and wheels A whilst serving to
steer the carriage receive positive motion of rotation from the motor K in what-
ever direction the carriage is travelling. The batteries for supplying electricity
to the motors may be arranged in any convenient part of the carriage, for instance
receptacles, as shewn at W in Figure 1, may be provided beneath the seats for
their reception.
The power may be transmitted from the motor K to the axle B by any suitable
arrangement. Figure 4 for instance shews an arrangement where the motor is
mounted on a transverse shaft provided with a pinion k gearing with a toothed
wheel 2 on a shaft ³ to which is secured a pinion k gearing with a toothed
wheel G the equivalent of the worm G in the other figures.
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:
1. Electrically propelled carriages for common roads, having the driving and
steering arrangements attached to the axle carrying the leading wheels, so that the
axle of the said leading wheels has a positive driving motion imparted to it 5

page_text: whatever the angle of the said axle may be with reference to the longitudinal line
of the carriage substantially as herein before described.
2. The combination and arrangement of parts constituting means for electrically
propelling and steering carriages on common roads, substantially as hereinbefore
described and illustrated by the accompanying drawings.
Dated this 30th day of September 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.