Metal deforming – By deflecting successively-presented portions of work during... – To form helical coil or tube
Patent
1984-02-10
1986-05-06
Combs, E. Michael
Metal deforming
By deflecting successively-presented portions of work during...
To form helical coil or tube
140124, B21F 304
Patent
active
045863580
ABSTRACT:
Disclosed is a machine and method for bending an elongate bar of metal or other appropriate material into a general "V-shape", the vertex of the "V" being a coiled spring. The machine for making the device has a motor driven, horizontally rotating spool with a spool arm to grip and bend the bar about a generally vertical axis. In manufacturing the V-shaped device, a central portion of the bar is placed against the spool so that the spool's arm can grip the bar for winding the bar about the spool. The bar is then bent an appropriate number of times around the spool to form the coiled spring portion, and thereafter the spool rotated backward a portion of a turn to loosen the coils about the spool. The device can then be removed from the machine and finished into any number of products. An example of use for such a V-shaped device is as an exerciser, exercising being performed by bending the V-arms together against the force of the coiled vertex.
REFERENCES:
patent: 274557 (1883-03-01), Brand
patent: 276763 (1883-05-01), Brock
patent: 2514096 (1950-07-01), Scott
patent: 2697470 (1954-12-01), Sampatacos et al.
patent: 4008594 (1977-02-01), Noyce
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