US Patent: 3,207,011
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| Machining Apparatus
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Patentee:
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| Erwin L. Erfert (exact or similar names) - Allendale, Bergen County, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 31, 1962 |
| Granted: |
Sep. 21, 1965 |
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Joel Havens
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Description: |
| Claim:
The machining of tread surfaces on steel wheels used for railroad service presents substantial problems with respect to high tool cost, poor dimensional control, and time required for the machining operations. In conven tional lathe operations, parallel juxtaposed cutting tools are frequently used in removing metal from castings, forgings, or the like. The conventional machining arrangements, however, cannot be used effectively by railroad car wheel manufacturers due to the problem of contouring and the necessity of blending the machined surface of the tread with other machined surfaces including the flange and inner rim of the wheel. |
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