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US Patent: 1,264,363
Chuck
Ball-bearing, three-jaw chuck with quick-release feature.
Patentee:
Eugene C. Bowers (exact or similar names) - Kalamazoo, MI

USPTO Classifications:
279/63

Tool Categories:

Assignees:
Eugene Cook - Kalamazoo, MI

Manufacturer:
Not known to have been produced

Witnesses:
Margaret L. Glasgow
Luella G. Greenfield
H. R. Sears
L. P. Blake

Patent Dates:
Applied: Aug. 15, 1916
Granted: Apr. 30, 1918

Patent Pictures:
All patent images are condensed above.
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Description:
The three jaws have inclined thrust faces which facilitate loosening of the jaws when the bit is removed.

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