Improvements in the Method of and Means for Transmitting Electric Currents in Tramways
Year: 1897

page_text: Date of Application, 30th Oct., 1897-Accepted, 4th Dec., 1897
COMPLETE STE
"Improvements in the Method of and Means for Transmitting
Electric Currents in Tramways."
1, MAX ROHSER, of 10 Hefnersplace, Nuremberg, in the Empire of. Germany
Ierchant, do hereby declare the nature of this invention and in what manner
he same is to be performed, to be particularly described and ascertained in and by
he following statement :-
This invention relates to improvements in the subterranean transmission of electric
currents by aid of several magnets which are fastened under a tramcar or other
vehicle, the feeding wire and several successive movable transmitting levers being
placed in a hermetically closed and insulated channel, the transmitting levers being
attracted or released when the magnets pass over the metal knobs or buttons, and
after the car has passed no current remains in the knobs, buttons, or road conductors
thereby lessening liability of accidents. The channel is also insulated from the wire
and the levers and therefore current can pass to the channel.
Such being the nature and object of my said invention, the following is a complete
description of same, reference being had to the accompanying drawings, in which :-
Fig. 1 shews the arrangement and working of the transmitting levers both in a
state of attraction and in a normal state.
Fig. 2 is a longitudinal section of the hermetically closed channel.
Fig. 3 is a cross section of Fig. 2.
Fig. 4 is a plan view of the hermetically closed channel.
The principal object of the invention is to take the current out of the hermetically
closed channel a in such a manner that neither the channel a nor the transmission
knob or road conductor can endanger the traffic after the passing of the car and that
the feeding wire and the interior mechanism are protected from water, dust, and dirt.
For this purpose the channels a are constructed of convenient length, and on porce-
lain bearings there are arranged loose transmitting levers c at distances apart so that
the insulated metallic knob f in the lid d of the channel a lies exactly over the
The levers care unequal
metal disc g which is attached to the transmitting lever c.
in length and weight so that the heavier lower part 9 will fall back after having been
attracted by the magneto and after having transmitted the current through the
knob and the receiving apparatus. By the attraction of the heavier part g
the shorter end h touches the feeding wire i and so the current passes through the
transmitting lever c, the transmitting knob f, and the receiving apparatus into
the motor.
The transmitting knobs of which complete the circuit can be transformed into road
conductors, in which case the road conductor must be interrupted from knob to
knob.
To facilitate the mounting every porcelain or gutta percha bearing is provided with
a dovetail m. The pink running through the transmitting lever c being likewise
provided with a gutta percha tube l by which it is insulated.
The action is as follows:-When the car or the magnets o pass over the
transmitting knobs f the latter attract the longer ends g of the levers c and cause the
shorter ends h to touch the feeding wire i. From the latter the current passes

page_text: through the transmitting lever c into the transmitting knob f, thence through a
receiving apparatus into the motor which is set in motion, and finally back through
the rail into the generating machine. The current in the magnets o is induced by
an independent source.
Having now particularly described and ascertained the nature of iny said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.
(1) A hermetically closed channel a in which at distances apart are the transmitting
levers c so arranged that their ends g are attracted by passing magnets o and their
ends h consequently touch. the feeding wire i for the transmission of energy to the
receiving apparatus, as herein described and substantially as illustrated by the
annexed drawings.
(2) The employment of loose transmitting knobs, buttons, or road conductors f
insulated against the lid d combined with the insulated transmitting lever c, as and
for the purpose herein described and substantially as illustrated by the annexed
drawings.
Dated this 28th day of October 1897.
MAX ROHSER,
By his Agents Brierley & Howard.
Penny Bank Chambers. Halifax.