Show an approach to perpetual motion A clock Is to be seen at brussels which comes about as near being a perpetual motion machine as can be invented for the sun does the winding the following Is the method by which it works A shaft exposed to the solar rays causes an up draft of air which sets the fan in motion the fan actuates mechanism which raises the weight of the clock until it reaches the top and then puts a break on the fan till tho weight has gone down a little when the fan Is again liberated and proceeds to act as before As long as tho sun shines frequently enough and the machinery docs not wear out the clock will keep in perpetual motion |