GB Patent: GB-190,223,982
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| Improvement in chucks
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Patentee:
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| Lars Axel Nilsson (exact or similar names) - Katrineholm, Sweden |
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Patent Dates:
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| Applied: |
Nov. 03, 1902 |
| Granted: |
Jun. 04, 1903 |
Espacenet patent
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Jeff Joslin
"Vintage Machinery" entry for Grönkvist Drill Chuck Co.
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Description: |
| This is the "Grönkvist chuck", which was manufactured by the assignee and also by the Grönkvist Drill Chuck Co. of Jersey City, NJ. The Gronkvist chuck allowed bit changes without stopping the drill. See also US patent 848,566. |
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