Apparatus for making and inserting helical wire binders

Details Apparatus for making and inserting helical wire binders Apparatus for making and inserting helical wire binders

1997-07-30

1999-08-24

Han, Frances

Wireworking

Article making or forming

Helix screwing through row of loops or openings

72145, 412 39, 412 40, 402 57, B21F 2100, B42B 512

Patent

active

059412895

ABSTRACT:
An apparatus for converting a length of metallic or other wire into a series of successive helical wire binders and for threading successive binders into rows of holes in the spines of successive stacks of sheets at a binding station includes an elongated guide defining an at least substantially continuous path for the wire from a wire inserting station to the binding station. The guide includes a rotary convoluting tool at the inserting station and a stationary cylindrical worm coaxial with the tool and extending from the latter to the binding station. Successive foremost binders are threaded into the rows of holes in successive stacks at the binding station and are severed from the respective following binders by a set of knives when the threading steps are completed.

REFERENCES:
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patent: 2961012 (1960-11-01), Freundlich
patent: 3101750 (1963-08-01), Pfaffe
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patent: 3818954 (1974-06-01), Pfaffle
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patent: 4249278 (1981-02-01), Pfaffe
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patent: 5695308 (1997-12-01), Hastings et al.
European Search Report Jan. 16, 1998.
German Serach Report Jan. 9, 1997.

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