US Patent: 114,700
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| Improvement in Lathe Chucks
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Patentee:
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| John C. Miller (exact or similar names) - Danville, Boyle County, KY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 09, 1871 |
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Joel Havens
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Description: |
| Alexander & Mason - patent attorneys
To set the work on this face-plate, place the desired center directly on the point a of the sliding rule 0, after the same has been moved into its position over the central opening of the face-plate. Then adjust the angle-plates B B and bars G G close to the work, which holds it in proper position. It can then be still further secured by thumb-screws passing through one of the angle-plates. Then draw out the sliding rule 0 away from the central opening, when the tool can be at once applied to make the desired hole. By this means it will be seen that the work can be adjusted in proper position without loss of time, and always exact; whereas, by the old method, where there was only one angle-plate, which had to be buckled on, the operator had to guess at the position of the work, try if it was right, change it again, and so on. losing always considerable time. |
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