Semi-automatic plastic spiral binding

Details Semi-automatic plastic spiral binding Semi-automatic plastic spiral binding

1998-06-19

1999-12-14

Fridie, Jr., Willmon

Bookbinding: process and apparatus

Apparatus

Edge binding apparatus

412 9, 412 38, 412 40, B42B 510, B42B 512, B42B 900

Patent

active

060008962

ABSTRACT:
A binding machine for spirally binding a sheaf of papers into a book uses an adjustable speed drive to rotate a flexible plastic spiral element into respective holes in the book. The book has a plurality of holes in a row adjacent one edge of the book to receive the leading edge of the spiral bonding elements. A cylindrically shaped mandrel is spaced apart from a glidable block. The plastic pre-formed spiral binding element is fed onto the mandrel from the distal end thereof, with the leading edge of the binding element facing and spaced apart from the book. A spring is mounted on the slidable block for engaging and adjustably press the spiral binding element on the mandrel so that the upper portion of the binding element is spaced from the top of the mandrel.

REFERENCES:
patent: 5785479 (1998-07-01), Battisti et al.
patent: 5890862 (1999-04-01), Spiel et al.

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