US Patent: 795,222
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Gearing for lathes
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Patentee:
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Bengt M. W. Hanson (exact or similar names) - Hartford, CT |
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Patent Dates:
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Applied: |
Oct. 13, 1904 |
Granted: |
Jul. 18, 1905 |
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Jeff Joslin Vintage Machinery entry for Pratt & Whitney Co.
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Description: |
This quick-change gearbox mechanism was used for years on Pratt & Whitney lathes. The pinion-gear is carried on a lever that can slide side-to-side to align with the chosen cone gear, and then rocks forward to engage both the cone gear and the driving gear. This basic design was not new but many design details were covered by this patent, most of these refinements intended to strengthen and stiffen the mechanism. |
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