Rahul Sharma (Editor)

Crank machine

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The crank machine was a device which turned a crank by hand which in turn forced four large cups or ladles through sand inside a drum, doing nothing useful. Male prisoners had to turn the handle 14,400 times a day, as registered on a dial. The warder could make the task harder by tightening an adjusting screw, hence the slang term "screw" for prison warder.

References

Crank machine Wikipedia


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