Method and apparatus for forming loosely connected articles

Details Method and apparatus for forming loosely connected articles Method and apparatus for forming loosely connected articles

1985-04-03

1986-11-11

Larson, Lowell A.

Metal deforming

By use of 'flying tool' engaging moving work

With cutting

72129, 72177, 83865, B21D 2810

Patent

active

046215115

ABSTRACT:
A punch and shear machine (27) has a pair of rotary punch drums (35, 36) succeeded by a pair of rotary shear drums (38, 39). The machine (27) receives a strip of sheet material (31) and forms in the strip a series of fastener-receiving indentations (51) and a series of alined pairs of slits (110) each with an intermediate scored portion (111). The sheared strip is then passed through a roll-forming machine (28) to form a strip of loosely connected hold-down clips (150) for roof panels and the like.

REFERENCES:
patent: 1462138 (1923-07-01), Langston
patent: 1487662 (1924-03-01), Langston
patent: 1969433 (1934-08-01), Smitmans
patent: 2083370 (1937-06-01), Greulich
patent: 2222842 (1940-11-01), Humphrey
patent: 2246957 (1941-06-01), Shields
patent: 2481138 (1949-09-01), Mercer
patent: 2568333 (1951-09-01), Henschker et al.
patent: 2728982 (1956-01-01), Merrill
patent: 3985054 (1976-10-01), Marino

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