US Patent: 463,392
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| Lathe-chuck
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Patentee:
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| James N. Skinner (exact or similar names) - New Britain, Hartford County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 13, 1891 |
| Granted: |
Nov. 17, 1891 |
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Joel Havens
"Vintage Machinery" entry for Skinner Chuck Co.
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Description: |
| Simonds & Burdett, patent attorneys
I claim as my invention:
1. In combination, in a lathe-chuck, a chuck-body having a central opening with a threaded hub-socket, the removable hub having a thread fitting said socket, the reversible chuck-jaws supported on the chuck-body and having a nut in the portion of the jaw projecting within the body, the radially-arranged jaw-screw having a shoulder adapted to thrust against the inner face of the flange of the chuck-body and with its inner end resting against the outer surface of the hub, all substantially as described.
2. In combination with a chuck-body formed in one piece cast to shape, the radial jaw-slots formed in the face of the chuck body, the central hub-socket having a thread adjacent to the face, there movable hub having a flange and a threaded portion at the upper end and fitting said socket and having a bearing against the substance of the chuck-body back of the face, the chuck-jaws having a threaded portion engaging the jaw-screw, the jaw-screw radially arranged within the body of the chuck with its end projecting beyond the periphery, a shoulder in contact with the inner surface of the flange of the chuck-body, and the inner end of the screw thrusting against the outer surface of the hub, all substantially as described.
3. In a lathe-chuck, in combination, the chuck-body opening on the back and having a face with a central threaded hub-socket, the reversible chuck-jaws arranged to move in the radial slots in the chuck-face and having a portion projecting within the body of the chuck, the removable hub having a threaded portion fitting within the hub-socket and in contact with the substance of the chuck-body back of the face of the chuck, the jaw-screw radially arranged within the chuck-body with one end projecting beyond the periphery and the inner end seated against the outer surface of the hub, the said screw having a shoulder in contact with the inner surface of the flange of the chuck - body and an annular groove within the said flange, and a locking-pin located in the flange and projecting into the groove, all substantially as described. |
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