US Patent: 2,888,848
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| Cam and Pin Type Mandrel or Chuck
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Patentee:
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| Bernard R. Better (exact or similar names) - Chicago, Cook County, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 10, 1955 |
| Granted: |
Jun. 02, 1959 |
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Joel Havens
"Vintage Machinery" entry for Scully-Jones & Co.
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Description: |
| Claim:
In a chuck for turning gears upon which work is to be done, in combination, a mandrel, means for attaching the mandrel to a machine tool, said mandrel having a plurality of circumferentially arranged longitudinal cams spaced equally around the periphery and being provided with slight depressions adjacent to the cams, rollers arranged longitudinally of the mandrel and adapted to coact with said cams for projecting them for engagement with the teeth of a gear work piece, a cage on the mandrel adjacent to the cams having longitudinal slots positioned so that their inner portions will partially break through the inside diameter of the cage, said rollers engaging with said slots and of sufficient diameter so that they will be restrained in the slots, a retaining ring engaging with peripheral grooves in the rollers and with a groove in the roller cage for holding the rollers against longitudinal movement, the arrangement being such that the gear to be worked upon may be readily positioned over the rollers which rollers will assume substantially the pitch diameter of the gear to insure proper alignment of the portion of the gear worked upon with the pitch diameter of the gear. |
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