US Patent: 2,995,963
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| Shell reamers
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Patentee:
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| Joseph Aimé Lavallee (exact or similar names) - Springfield, MA |
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Patent Dates:
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| Applied: |
Mar. 31, 1960 |
| Granted: |
Aug. 15, 1961 |
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Jeff Joslin
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Description: |
| The "objection of the invention is to provide an improved shell reamer construction capable of accurately reaming holes in tougher materials that has hitherto been possible or practical... Structurally the present reamer comprises a shank having a tapered mandrel portion at its outer end with a correspondingly tapered cutter telescoped over the mandrel portion. The characterizing features of this reamer construction are found in a non-circular key portion at the outer end of the mandrel portion which is received by an opening of corresponding shape in the outer end of the cutter. The key portion extends substantially to a point radially aligned with cutting edges formed at the outer end of the cutter. Preferably, a screw is threaded into the outer end of the shank on its axis, to retain the cutter in place." |
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