US Patent: 81,952
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| Improvement in lathe-heads
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Patentee:
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| Henry F. Shaw (exact or similar names) - West Roxbury, Suffolk County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Sep. 08, 1868 |
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Patent Pictures:
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Joel Havens
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Description: |
| This engine-lathe patent is of interest because the two assignees were both important machine inventors and builders in their own rights.
The nature of my invention consists in the application to an engine-lathe head of a differential gear, in which the internal and external gears are so arranged and connected that the smaller or external gear way have a movement in reference to a nominally fixed point, and is so combined and arranged with respect to other parts as not to admit of a rotary movement, but so, nevertheless, as to cause a rotary motion of the larger or internal gear-cylinder on its axis; and by means of a simple adjustment of an eccentric-sleeve, on which the smaller gear-cylinder works, the latter may be thrown into a position eccentric to and in gear with the larger gear-cylinder, and also out of connection with the same, thus allowing the larger or internal gear-cylinder a free rotating motion, while the external gear-cylinder remains stationary. The velocity of the larger gear-cylinder is regulated by the relative number of teeth on the same to those on the smaller or external gear.
This patent is related to patent 64915, which is, surprisingly for a "hoisting-gear", or windlass. |
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