low tech

The short history of early pedal powered machines
http://www.lowtechmagazine.com/2011/05/history-of-pedal-powered-machines.html


Pedal powered farms and factories: the forgotten future of the stationary bicycle
http://www.lowtechmagazine.com/2011/05/pedal-powered-farms-and-factories.html


Hand powered drilling tools and machines
http://www.lowtechmagazine.com/2010/12/hand-powered-drilling-tools-and-machines.html


The sky is the limit: human powered cranes and lifting devices
http://www.lowtechmagazine.com/2010/03/history-of-human-powered-cranes.html