<https://lh3.googleusercontent.com/-1L_yrXPUFdg/VUArcv2pndI/AAAAAAAAAHo/sZE-zJLuKCY/s1600/IMG_0549.JPG>

<https://lh3.googleusercontent.com/-bqaIGccREl8/VUArXh9BmfI/AAAAAAAAAHg/swIxtAFf9f0/s1600/IMG_0549.JPG>
There was also some discussion about the old car radios that used a coil to 
'autowind' the clock every few minuets. The escapement would advance a cam 
and eventually allow a set of points to make contact, energizing a solenoid 
which would rewind the drive spring and open the points. Worked pretty 
good, drew a significant amount of current and after time the contacts 
would pit and the operation became unreliable...

 I found the clock above which works on a similar principle. The escapement 
moves a cam that eventually allows a set of points to make contact which 
activates the motor. That motor drives the digital number display, rewinds 
the drive spring asm and resets the cam. Oddly the cam/motor/contact 
portion works good.. the escapement drive sucks. It can run fast, or slow 
depending on who knows what...

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