Archimedean cam reverser
The input may be one among two levers (in blue and yellow). The remaining lever is the output.
They turn in opposite directions.
Two cams of Archimedean slot (in blue and yellow) are identical.
Pink slider translates thanks to the input cam and turns the output cam.
Pitch of the Archimedean slots must be big enough to prevent possible jam.
STEP files of this video:
http://www.mediafire.com/file/w7hoj1c...
Inventor files:
http://www.mediafire.com/file/xrr1yzy...