harry wrote:


There are eyes on the poles and they are spring loaded upwards. The
wires are "8"section, there is a pinching device.
There was a long bamboo pole threaded under the bus for the purpose
ofhooking/unhooking wires.
Best laugh was when the bus went one way down a junction and the poles
went the other way. (Someof the junctions had automatic "points" but
sometimes they got out of sequence.
There was a manual ring for the conductor to pull to move the
"points" on most junctions.

The old trollybusses in Riga (1997) were even simpler:

Flexible cable from each pole ran down to a sping loaded retractor spool on
the back of the bus (think hoover cable rewind). To move the pole, conductor
pulled on the wire. Very simple

There was some sort of hook on the pole and the vehicle which could be used
to latch the pole down to if required.


--
Tim Watts