Device for subdividing spirals into binders of note books or the

Details Device for subdividing spirals into binders of note books or the Device for subdividing spirals into binders of note books or the

1977-11-25

1979-08-28

Larson, Lowell A.

Wireworking

Article making or forming

Helix screwing through row of loops or openings

83907, B21F 1100

Patent

active

041657667

ABSTRACT:
A device for severing a spiral whose convolutions are threaded through the perforations in aligned marginal portions of two immediately adjacent note books has shears whose halves are provided with cutting edges and deforming shoulders. A system of cams is reciprocably mounted in a carriage for the shears, and the cams have faces which engage the followers of the halves to pivot the cutting edges toward each other whereby the cutting edges sever the spiral between the note books and the shoulders thereupon bend the adjacent end portions of the thus obtained spiral binders in cooperation with the teeth of two locating levers which are pivoted to the carriage and serve to engage the convolutions of the spiral during severing and bending. The note books are held in a predetermined position by the holder of an indexible turret.

REFERENCES:
patent: 2963049 (1960-12-01), Biel et al.
patent: 3924664 (1975-12-01), Pfaffle
patent: 3924665 (1975-12-01), Spuhl
patent: 3972109 (1976-08-01), Sickinger
patent: 4129156 (1978-12-01), Pfaffle

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