US Patent: 1,872,667
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| Work sizing
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Patentee:
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| William J. Bryant (exact or similar names) - Springfield, VT |
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Patent Dates:
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| Applied: |
Jun. 16, 1930 |
| Granted: |
Aug. 23, 1932 |
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Jeff Joslin
Vintage Machinery entry for Bryant Chucking Grinder Co.
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Description: |
| "This invention relates to methods and mechanism for accurately determining when work which is being cut reaches the desired size, and also for automatic relieving of the cutting tool from further cutting as soon as the desired size has been reached. In accordance with the present invention the sizing indication is given not by actual measuring of the work itself, as in methods heretofore proposed, but by the position of the cutting portion of the tool when it is positioned for the final cut. This method automatically compensates for any wear of the tool, eliminates the necessity of withdrawing the tool from the work for the presentation of test gages thereto and is independent of the amount of pressure between the tool and the work. In accordance with the present invention, when the tool cutting portion reaches a predetermined position an electric circuit is closed through suitable contacts, one of which preferable has its contact face in a definite relation to the tool face and is moved with the tool and is subjected to the same actions of wear and truing as the tool..." |
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