Can't recognize circuit element in old clock mechanism
Standard sized microswitches (which aren't actually micro-sized!). They are available with different shapes of lever and even roller connected to the switch, so that they may be operated by moving equipment or cams - clearly here, to turn the winding mechanism off at the right time. 



Connections to them are usually standard spade clips, visible in your photo.

Thankfully the switch elements are sealed from the elements and pigeons...