US Patent: 3,771,896
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| Radial Boring Machine With Extending, Adjustable Boring Head
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Patentees:
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| Emil K. Witzig (exact or similar names) - Leonberg, Böblingen District, Baden-Württemberg, Germany |
| Rudolf Frank (exact or similar names) - Ludwigsburg, Ludwigsburg District, Baden-Württemberg, Germany |
| Willi Klein (exact or similar names) - Denkendorf, Esslingen District, Baden-Württemberg, Germany |
| Assignees: |
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Emil K. Witzig - Leonberg, Böblingen District, Baden-Württemberg, Germany |
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Rudolf Frank - Ludwigsburg, Ludwigsburg District, Baden-Württemberg, Germany |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 02, 1971 |
| Granted: |
Nov. 13, 1973 |
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Joel Havens
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Description: |
| Foreign application priority in Germany, 05 Sept. 1971.
Abstract:
The vertical support for the extension arm carrying the boring head of the boring machine includes a hollow support column, the bearings for the extending arm being located within the hollow of the support column and interconnecting a bearing pin secured to the extension arm; to secure the extension arm in a radially locked position, it is preferably formed with a conical surface which matches a conical surface within the hollow of the support column, the matching conical surfaces being capable of being pressed together, for example by hydraulic pressure. The conical surfaces are so located and arranged that when the extension arm is locked in position, by pressure of the surfaces against each other, loading on the bearings is reduced and, additionally, the reaction force due to operation of a boring tool from the boring head tends to press the conical surfaces together. |
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