Old Fireplace Jack Rotisserie Weight driven.

A near complete Clockwork weight driven Fire Jack as they are sometimes called, these featured around many an old house open fire place.
This one originated from France it was intended to have it as a feature, a handle winds the stone weight that through gravity drives the mechanism,
A chain from the wooden pulley that has metal pegs drives a similar pulley on the rotisserie.
A rotating set of weights act as a governor to keep the whole thing turning at a slow rate to ensure a well cooked joint of meat or a full fish.
Quite an original unique fully working device either as a centre piece decoration or ideal in a restaurant for use in an open grate fire place.