Treadle Sewing Machine

Field	Domestic Sewing
Went Obsolete	Early 20th century
Made Obsolete By	Widespread electrical service and cheap electric motors
Knowledge Assumed	Maintaining and operating a treadle-driven machine
When useful	Sewing "off the grid" or after the Apocalypse

See http://www.treadleon.net/(approve sites) for complete information and treadle evangelism.