US Patent: 89,335
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Tool Adjuster
Improved Tool Adjuster for Lathes
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Patentee:
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| L. J. Parsons (exact or similar names) - New Haven, New Haven County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 27, 1869 |
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Joel Havens
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Description: |
| John E. Earle - patent attorney
This invention relates to an improvement in the adjustment of the tool so as to raise or lower the point relatively to the surface being cut, and consists in the arrangement of a plate upon the rest, through which the tool-holder passes, and forming in the said plate a groove, corresponding to the opening through the tool-holder, which said groove is adapted to receive an adjusting-block, which is flat upon the upper surface, and the under surface the segment of a circle, the said block lying in the groove in the plate, and through an opening in the tool-holder, so that the under edge of the tool rests in the said block, while the screw through the upper end of the tool-holder bears upon the cutter, to bind it firmly in position, it being adjusted to different heights of the point by setting the block at different positions through the tool-holder, the said segmental surface inclining to raise or lower the point in proportion as it is placed further through the holder or drawn back.
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