Technically, it can't be called a trolley because it uses a pantograph instead of a trolley pole for its electrical pickup.

Pantograph:



Trolley pole:

LIG

what are you, a fucking park ranger?

And what is the wire called that is contacted by the pantograph or the trolley pole ? And what is the drawing device, also called a pantograph ?

For a system that uses pantographs, the wire is called a cantenary. For a system that uses trolleys, the wire is called a trolley wire. (Cantenary wires are held at a constant tension, and are capable of powering trains at much higher speeds than trolley wires, even if the voltage is the same.)

I have no idea about the drawing device...

DEEZ

Thank you. That's catenary, I think (also describing the curve made by a chain suspended from two points, similar to but different from an ellipse).

(Dad was a mechanical engineer and railfan, as you may be also ?)

A graphic pantograph is a device of levers and pivots which enables the reproduction of an image on an adjacent surface, either at 1:1 or at a different scale.

ride the snake... to the lake...

i'd ride it