US Patent: 912,582
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| Chuck
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Patentee:
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| John A. Leland (exact or similar names) - Montague, MA |
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Patent Dates:
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| Applied: |
Jun. 23, 1908 |
| Granted: |
Feb. 16, 1909 |
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Jeff Joslin (dm)
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Description: |
| The purpose of this chuck is the same as Leland's earlier patent 857947. It differs in that the jaws are not held apart at their base by a spring. Rather, they are attached to resilient arms, on their outer surfaces, by means of a loose pin which allows them to pivot and slide. The jaws are, therefore, free to conform to a straight or tapered shank, with uniform pressure being attained by being trapped between the inclined surfaces of the jaw seat and sleeve. |
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