The Set Spring

Reference no 440
 

 

The Set Spring (440) gives the Clutch Lever a force allowning the Clutch Wheel to move back and forth to change between the winding and set position when the winding knob is pushed in or out.

 
 
 

The mechanical watch is wound up in the winding position, with the winding knob pushed in. In this position the Clutch Wheel is pushed towards the right by the Clutch Lever, which in turn is pushed by the Set Spring (440), see the figure above.

 
 

  In the hand setting position, with the winding knob pulled out, the Set Lever gives the Clutch Lever a force, which in turn pushes the Clutch Wheel to the left. This movement disengages the Clutch Wheel from the Winding Pinion and instead engages the Set Wheel, see figure above.

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