History Sewing Machine
http://www.ehow.com/about_6586511_history-antique-sewing-machines.html
Stitches - The History of Sewing Machines
History of the Sewing Machine - Moah
1849 John Bachelder's Patent Model of a Sewing Machine
http://www.tfsr.org/pub/technical_info/sewing_machine_manual/Getting_started_how_sewing_machines_work.pdf
Kinematic analysis of the sewing mechanims of overedge machine
http://www.fibtex.lodz.pl/55_20_79.pdf
GIF showing mechanism of sewing machine - thread becoming a loop
http://www.core77.com/blog/object_culture/gifs_that_explain_basic_mechanisms_17220.asp
Optimization examples of industrial sewing machines mechanisms
http://www.ep.liu.se/ecp/063/089/ecp11063089.pdf
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