Human Powered Dredger (1859)

human powered dredger

Click on the illustration below to see the plan in high resolution. Source: “Mémoires et compte rendu des traveaux de la société des ingénieurs civils, Vol.12, 1859“.


Prison Treadmills

Prison Treadmill

The prison treadmill was invented in England in 1817 by Sir William Cubit, who observed prisoners lying around in idleness and put himself to the task of “reforming offenders by teaching them habits of industry.” Forty-four prisons in England adopted it as a form of hard labour that could also grind grain (although some treadwheels were only “grinding the wind“).

The punitive treadmill was then implemented in America for two long years, between 1822 and 1824, at Bellevue penitentiary outside New York. Prisoners stepped on the mill for 10 hours a day (with 20 minute breaks per hour), grinding grain, often with a large audience of jeering onlookers housed in a specially built viewing house. Read here and here. Picture credit. See more images.

Related: Human powered cranes and lifting devices.

Macho pedal power

Hennepin Crawler 5

Maybe artists and fantasy are a better foothold for the future than engineers and high-tech. The pedal powered Hennepin Crawler is capable of both street and railroad track cruising and can seat four people. It is comprised of approximately 90% recycled materials and has a sex appeal that can rival that of a Porsche or a Land Rover. Via Make 17. Related: Cycle Chics. More on railcars. More low-tech cars.