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Original file (2,125 × 3,195 pixels, file size: 2.45 MB, MIME type: image/jpeg)
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Summary
| Description | Charles Vander Woerd's Automatic Screw-making Machine, circa 1871-1876, invented for the American Watch Company, Waltham, Massachusetts, USA. This machine could make any size watch screw; one operator could attend six of these machines to give a combined output of 50-60,000 screws per day. |
| Date | |
| Source | Own work |
| Author | Daderot |
| Permission (Reusing this file) |
Public domain. |
Licensing
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:05, 18 April 2009 | | 2,125 × 3,195 (2.45 MB) | Daderot | {{Information |Description=Charles Vander Woerd's Automatic Screw-making Machine, circa 1871-1876, invented for the American Watch Company, Waltham, Massachusetts, USA. This machine could make any size watch screw; one operator could attend six of these m |
File usage
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