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Twin
rollers apply glue to the book spine. Both rollers
turn in the same direction. These roller speeds
are adjustable so that no build-up of glue occurs at
either book end. The adjustable scraper blades
regulate the amount of glue on the rollers. Heated
wires sever glue "strings" as book passes from glue
rollers to the nipper. This removable pot holds
a generous glue supply and the height is also adjustable.
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