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Bookbinding coil insertion machine

Image Number 9 for United States Patent #6000897.

This invention relates to a machine for insertion of plastic helical bookbinding coils in the aligned holes at the edge of a book for binding the book. The machine comprises a platen for receiving the collated book; a coil engagement roller for engaging the coil at the edge of the platen and a coil drive roller for rotating the helical coil.

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