G gc-p New member Sep 29, 2009 #2 "The mechanical belt drive, with a large wheel and small pulley, was first mentioned by the Han Dynasty author Yang Xiong in 15 BC"
"The mechanical belt drive, with a large wheel and small pulley, was first mentioned by the Han Dynasty author Yang Xiong in 15 BC"
R Rorschach New member Sep 29, 2009 #3 that history is lost to the depths of time. Nobody really knows who invented it or when.
G gc-p New member Sep 29, 2009 #4 "The mechanical belt drive, with a large wheel and small pulley, was first mentioned by the Han Dynasty author Yang Xiong in 15 BC"
"The mechanical belt drive, with a large wheel and small pulley, was first mentioned by the Han Dynasty author Yang Xiong in 15 BC"
