Crank machine
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.[1]
See also
References
- Bibliography
- "Inveraray Jail and County Court, Life in Jail". 2016. Retrieved 23 September 2016.
- Abbott, Geoffrey (2016). "Treadmill". online: Encyclopædia Britannica. Retrieved 19 September 2016.
- Britannica editors (1926). "Britannica on the treadmill". 13th edition: Encyclopædia Britannica. Retrieved 19 September 2016.
- "Prison Treadmills". No tech. Low-tech magazine. Retrieved 19 September 2016.
External links
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