US Patent: 3,613,485
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| Method of fabricating a cutter
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Patentees:
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| Hubert K. Kelly (exact or similar names) - Syracuse, NY |
| Thomas J. McDonnell (exact or similar names) - Syracuse, NY |
| Richard C. Lamkin (exact or similar names) - Skaneateles, NY |
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Patent Dates:
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| Applied: |
Aug. 01, 1967 |
| Granted: |
Oct. 19, 1971 |
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Jeff Joslin
Vintage Machinery entry for Delta Specialty/Delta Mfg. Co./Delta-Rockwell/Rockwell Intl.
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Description: |
| Patent 3,491,422 discloses a portable planer cutter fabricated from a series of plates with cutting edges plus "cooperating bosses and apertures" to produce a roughly helical cutting edge. This present patent discloses how to manufacture that invention, which was claimed to reduce cost from "almost fifty dollars" for a conventionally machined 3-inch helical cutterhead to a small fraction of that cost, by drastically reducing both the amount of labor and the skill required. |
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