Improved Means for Carrying Electromotors on Electrically Propelled Cars or Vehicles.
Year: 1890

page_text: Date of Application, 25th Aug., 1890
Complete Specification Left, 15th May, 1891-Accepted, 20th June, 1891
PROVISIONAL SPECIFICATION.
[Communicated from abroad by the firm of SIEMENS & HALSKE, of Markgrafen-
Strasse, Berlin, in the German Empire, Electrical Engineers.]
Improved Means for Carrying Electromotors on Electrically
Propelled Cars or Vehicles.
We, SIEMENS BROTHERS & COMPANY LIMITED of 12, Queen Anne's Gate,
Westminster, in the County of Middlesex, Electrical Engineers, do hereby declare
the nature of this invention to be as follows:-
This invention relates to cars or vehicles propelled by electromotors, and consists
in carrying the electromotor for propelling the vehicle in such a manner upon a
framing situated between the axles of the running wheels as to be independent of
the body of the vehicle and so that the supports of the motor have spring. action
while free angular movement is afforded to the wheel axles.
For this purpose a frame, consisting by preference of a fork-shaped horizontal
bearer, is suspended from two contiguous wheel axles, the two ends of the fork
being borne on bearings carried by the one axle while the apex is carried by means
of eyes or saddle pieces by the other axle, in such a manner as to allow of the
angling of the axles on passing round curves.
On the frame are fixed standards which support the electro motor at their upper
ends by means of elastic cushions or springs having a limited amount of play, so that
while these cushions preserve the motor from the more or less violent shocks to which
the wheel axles are subject in running, they preserve the necessary parallelism of the
armature shaft and the wheel axle for imparting the motion of the former to
the latter through gearing.
Instead of making the frame of a fork shape as described it may have two bearings
on each wheel axle.
To allow of the angling of the axles as described, the eyes or saddle pieces
fitted on the one axle are not rigidly connected to the frame, but by means
of bolts or straps that allow of a certain amount of relative motion between the
two parts.
Dated this 25th day of August 1890.
ABEL & IMRAY,
Agents for the Applicants.
COMPLETE SPECIFICATION:
Improved Means for Carrying Electromotors on Electrically
Propelled Cars or Vehicles.
We, SIEMENS BROTHERS & COMPANY LIMITED, of 12 Queen Anne's Gate,
Westminster, in the County of Middlesex, Electrical Engineers, 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 cars or vehicles propelled by electromotors and consists
in carrying the electromotor for propelling the vehicle in such a manner upon a
framing situated between the axles of the running wheels as to be independent of the
body' of the vehicle and so that the supports of the motor have spring action while
free angular movement is afforded to the wheel axles within certain limits.

page_text: For this purpose a frame, consisting by preference of a
fork-shaped horizontal
bearer, is suspended from two contiguous wheel axles, the two ends of the fork
being borne on bearings carried by the one axle while the apex is carried by means
of eyes or saddle pieces by the other axle, in such a manner as to allow of the
angling of the axles on passing round curves.
On the frame are fixed standards which support the electromotor at their upper
ends by means of elastic cushions or springs having a limited amount of play, so
that while these cushions preserve the motor from the more or less violent shocks
to which the wheel axles are subject in running, they preserve the necessary
parellelism of the armature shaft and the wheel axle for imparting the motion of
the former to the latter through gearing.
Instead of making the frame of a fork shape as described it may have two
bearings on each wheel axle.
To allow of the angling of the axles as described, the eyes or saddle pieces
fitted on the one axle are not rigidly connected to the frame, but by means
of bolts or straps that allow of a certain amount of relative motion between the
two parts.
Fig. 1 of the accompanying drawings shews a sectional elevation of part of a
vehicle with the electromotor arranged according to the above described invention;
Fig. 2 shews a plan and
Fig. 3 a sectional end view of the mode of attachment to one of the wheel
axles.
The axles d and e of the vehicle have suspended from them a fork-shaped
framing a a the connection of the forked end with the axle d being effected by
means of two plummer-blocks B B connecting the frame rigidly to the axle while
the other end of the frame is suspended from the axle e by means of two looped
bolts passing round lugs on a sleeve C fitting loose on the axle e, so that the
axle e is capable of moving within certain limits relatively to the frame a, thus
allowing of a certain amount of radial adjustment or angling of the axles when
passing round curves. gg and h are standards secured to the frame a by screw
bolts passing through slots in the frame, and which serve to support the frame of
the electromotor. In order to protect the latter from the injurious action of the
strong concussions to which the wheels are subjected, caoutchouc buffers bb or
springs are interposed between the ends of the standards and the motor frame, so
that such concussions or vibrations are only transmitted in a very weakened degree
to the motor. As the relative vertical motion between the frame a and the motor
will only be very slight, the displacement of the armature shaft relatively to the
axle driven thereby will also be correspondingly small, and will consequently not
interfere with the correct transmission of motion through bands, cords, chains or
toothed gearing.
Instead of suspending the frame a a from three points only, there may be
provided four points of suspension without materially interfering with the radial
displacement of the axles.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In electrically propelled vehicles, supporting the electromotor on a frame,
which is carried at three or four points by two of the wheel axles, caoutchouc or
other springs being interposed between the frame and the electromotor so as to
prevent the concussions to which the wheels are subjected from being transmitted
in any material degree to the electromotor, while the latter is maintained in proper
position for correctly transmitting the driving power to one of the axles, substan-
tially as described.
2. In the arrangement for supporting electromotors on vehicles referred to in
the preceding claim, suspending the frame carrying the electromotor from the

page_text: driven axle by rigid bearings while it is suspended from the other axle by looped
bolts which allow of a certain amount of angling of the axles for running round
curves, substantially as described.
ABEL & IMRAY,
Agents for the Applicants.