US Patent: 817,885
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| Lathe Attachment
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Patentee:
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| Charles G. Taylor (exact or similar names) - Hartford, Hartford County, CT |
| USPTO Classifications: |
| 82/18 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 09, 1905 |
| Granted: |
Apr. 17, 1906 |
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Patent Pictures:
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Joel Havens
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Description: |
| Abstract:
This invention relates to attachments for lathes, and is designed for the purpose of relieving or backing off the teeth of milling, gear, and other cutters requiring a certain amount of relief to enable them to accomplish their work. Primarily the object of the invention is the provision of a portable attachment comprising a shaft supported by the centers of a lathe and connected to rotate with the faceplate thereof, said shaft being eccentric to its journals for the greater portion of its length, and also carrying an eccentric for operating indexing mechanism. A further object of the invention is the pro- vision, in connection with the shaft above mentioned, of a bar carrying at one end an indexing-pawl and being adjustably connected at its opposite end to a plate, the plate and bar each carrying a rod adapted to fit over some fixed part of the lathe-for instance, the shank of a turning-tool to thus prevent the bar from rotating with the shaft mounted between the lathe-centers. A further object of the invention is the provision of a sleeve fitting over the eccentric portion of the shaft and to which sleeve the cutter-blank to be relieved is secured, said sleeve having rigid therewith a toothed index-plate turned at the proper times by the pawl when the bar is actuated by the eccentric above mentioned.
Claim:
A relieving attachment comprising a io shaft having an eccentric portion and a sleeve surrounding said eccentric portion; means for clamping a toothed cutter-blank to the sleeve; means for rotating the shaft, and thereby causing the sleeve to advance toward and recede from a turning-tool; an index-plate secured to the sleeve; a pawl; a reciprocatory bar carrying the pawl; projections, between which a guide is secured, carried by said bar; and an eccentric on the shaft for actuating the bar. |
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