This is a chain hoist, aka differential pulley.
It is made from 14 links per 25mm chain, parrot clasps and 18mm pulley wheels. The top bracket is 6.4mm brass strip.
It is gunged up with brown and black spray paint.
Given the sizes of the wheels, this one has a mechanical advantage of 3.6!
It is made from 14 links per 25mm chain, parrot clasps and 18mm pulley wheels. The top bracket is 6.4mm brass strip.
It is gunged up with brown and black spray paint.
Given the sizes of the wheels, this one has a mechanical advantage of 3.6!