[morzh]

Tim

As I explained it to you yesterday:

1. There is no spring on the wire. The wire IS the spring.
2. The wire is made from stainless steel and it is thin. It looks like a guitar string, the one used for the upper "E" string.
3. The wire always arches and thus pushes on the roller which IS the closing contact for the power switch, which in turn is formed by two spring leaf contacts and the roller.
4. The roller goes in between the two spring leaf contacts that are the middle point of the 4 batteries and are normally open (the roller is NOT pushed between them). The roller, when pushed between them, shorts them together applying the power to the whole player.
5. The steel wire and the roller create a bi-stable (flip-flop-like) structure: as the wire arches it is constantly pushing the roller and the roller thus remains in one of its two stable positions: one is "Switch Open" and another is "Switch Closed".
6. A lever coupled with the tone arm pushes the roller in between the two positions and the wire simply pushes to keep it in the positions once it reaches them.

This is it.