Metal deforming – By deflecting successively-presented portions of work during... – To form helical coil or tube
Patent
1990-05-08
1991-01-22
Combs, E. Michael
Metal deforming
By deflecting successively-presented portions of work during...
To form helical coil or tube
140 89, B21F 302, B21F 3502
Patent
active
049861034
ABSTRACT:
A coiling machine employs an apparatus wherein a coil spring having tucked ends may be formed at the coil forming station. After the helical coil is formed, a slider member engages the next to the last formed loop of the coil and forces the loop over the trailing or last formed loop of the coil. The coil is then severed from the wire supply so as to form a coil spring having a tucked trailing end.
REFERENCES:
patent: 1466363 (1923-08-01), Hamilton
patent: 2404424 (1946-07-01), Balla
patent: 4571973 (1986-02-01), Morita
patent: 4719683 (1988-01-01), Ulbing
Combs E. Michael
Newcomb Spring Corp.
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