File:EB1911 Sewing Machine - rotary hook, bobbin, and bobbin case.jpg
EB1911_Sewing_Machine_-_rotary_hook,_bobbin,_and_bobbin_case.jpg (687 × 476 pixels, file size: 139 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:34, 22 October 2017 | ![]() | 687 × 476 (139 KB) | Library Guy | {{Information |Description ={{en|1=The second principal method of forming the lock stitch consists in seizing the loop of the upper thread by a rotating hook, expanding the loop and passing it around a stationary bobbin within which is wound the und... |
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