US Patent: 425,279
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Reversible jaw for chucks
Scroll chuck jaws for metal lathes
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Patentee:
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| Lucius E. Whiton (exact or similar names) - New London, CT |
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Patent Dates:
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| Applied: |
Jul. 12, 1889 |
| Granted: |
Apr. 08, 1890 |
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Jeff Joslin
Vintage Machinery entry for D. E. Whiton Machine Co.
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Description: |
| These chuck jaws are described in detail in an 1896 catalog from D. E. Whiton Machine Co. It that this type of jaw "is best adapted to the smaller sizes, in which the Jaws may be very conveniently run out to be reversed. This style Jaw avoids the necessity for using small screws to fasten the parts, and the steps in the Jaws, being solid, may be trued up whenever necessary." Another style of jaw is recommended for larger chucks where it would take too long to unscrew them to reverse them; instead, the jaws slide into dovetailed ways and are held in place with a screw. ...we do not recommend these Reversible Jaws as being fully equivalent to the two sets of solid jaws commonly furnished. The Reversible Jaws are not as convenient and are liable to be less accurate; they are also not as durable, having only one set of bottom sliders to engage with the scroll, but Chucks so fitted are less expensive than Chucks with two sets of Jaws." |
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