File:EB1911 - Screw - Fig. 4.png
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English: Fig. 4.—Opening Die-head for Screwing Machine.
A, Spindle end. B, Sliding collar. C, Ring bolted to B, and enclosing ring having three coned grooves a, a, a, set eccentrically to close in or let out the chasers D. E, Curled spring keeping chasers outwards in contact with a. F, Piece screwed to end of A, and provided with three grooves to carry the chasers. G, Cover plate confining the chasers, and unscrewed from F when changing chasers for other sizes. |
| Date | |
| Source | https://en.wikisource.org/wiki/Page%3AEB1911_-_Volume_24.djvu/499 |
| Author | Encyclopædia Britannica |
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This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States. |  |
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