US Patent: 2,369,923
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| Machine for Bending Bars and the Like
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Patentee:
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| Ralph M. Shaw, Jr. (exact or similar names) - Edgewater Park, Burlington County, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 27, 1943 |
| Granted: |
Feb. 20, 1945 |
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Joel Havens
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Description: |
| Abstract:
My invention is directed toward overcoming the foregoing drawback, that is to say, toward making possible the bending of bars of different cross sections in one direction or another to the exclusion of any cross sectional deformation or weakening in any part of the finished product.
Claim:
A machine for bending bars of angular cross section, previously prepared by having their ends twisted relative to the intermediate portions at which the bends are to be made, comprising a pair of cooperative die members whereof one is spool like and stationary while the other is rotatively movable thereabout, said members jointly providing a confining interval accurately con-formative with the cross section of the bar; and a pair of hold-down elements associated with the die members each embodying a hook, one of said elements being rigidly mounted and the other radially adjustable and respectively engaging the pre-twisted end portions of the bar to be bent, so that incidental to the bending operation all portions of said bar will be turned back into normal position, and be free from twist. |
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