US Patent: 3,464,251
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| Tube Tapering Device With Variable Die Orifice
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Patentee:
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| Roderick W. Johns (exact or similar names) - Simi, Ventura County, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 20, 1967 |
| Granted: |
Sep. 02, 1969 |
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Joel Havens
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Description: |
| Claim:
A tube tapering device incorporating a chuck mounting at least three angularly aligned and radially slidable jaws whose inner ends are formed with die peripheries. The die peripheries collectively constitute a die orifice that can be varied by simultaneously sliding the die peripheries toward or from the die orifice axis. The tube being tapered is rotated about its axis and is maintained in axial tension so that a tube-forming mandrel is not required. |
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