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mechanics

simple machines
gears and pulleys
cams
cranks and crank shafts
linkages
other useful mechanisms
 
 
 
 
 
 

 

Automaton mechanics

 

Other useful mechanisms

 

Ratchets
A ratchet mechanism is based on a wheel that has teeth cut out of it and a pawl that follows as the wheel turns. Studying the diagram you will see that as the ratchet wheel turns and the pawl falls into the ‘dip’ between the teeth. The ratchet wheel can only turn in one direction - in this case anticlockwise.

scotch yoke

geneva wheel

More coming soon!!


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