US Patent: 2,368,888
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| Small Electric Machine Tool
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Patentee:
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| Robert Schümann (exact or similar names) - Racine, Racine County, WI |
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Patent Dates:
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| Applied: |
Jun. 27, 1941 |
| Granted: |
Feb. 06, 1945 |
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Joel Havens
"Precise" Toolpost Grinder
"Vintage Machinery" entry for Precise Products Corp.
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Description: |
| Application filed in Germany, 12 Feb.. 1939.
Claim:
By the invention a connection between motor shaft and cutting spindle has to be produced which renders harmless and prevents any axial inaccuracies between cutting spindle and motor shaft, so that shocks exerted upon the cutting spindle and oscillations of the latter no longer act upon the motor shaft. The connection must further be of such type, that it automatically adjusts itself gyroscope-like during the running of the tool into such a position that its central axis or its axis of gravity coincides with the turning axis. |
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