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International Sewing Machine Collectors' Society

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Home > Gallery > Singer Sewing Machine Company >Bobbin Information

	Bobbin Type	Models
	Long Bobbins	27 28 127 128
	Class 66 Bobbin sides are slightly domed.	66327431 98328478 99337500 185401503 201    403     534 285404     714 317411
	Class 15 Bobbin sides are completely flat.	15 30TC 25TC
	Class 221/301 Part Number: 45785. FW bobbins are flat sided but are thinner than the Class 15 Singer bobbin.	221 222 301 Sears Kenmore Model 49 Free Westinghouse (certain models) These last two machines have what is titled the "rotary" bobbin case by Sincere's Sewing Machine Service Book, page 7. These are not the "rotary" bobbins that White's Rotary Machines take.

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