Method of and apparatus for backing book blocks

Details Method of and apparatus for backing book blocks Method of and apparatus for backing book blocks

1995-03-13

1996-09-17

Fridie, Jr., Willmon

Bookbinding: process and apparatus

Apparatus

Book working apparatus

B42C 502

Patent

active

055562442

ABSTRACT:
The backing of a previously rounded book block is accomplished, while the book block is clamped between oppositely disposed gripping jaws, by subjecting the spine region of the book block to composite forces resulting from imparting a swinging motion along an arcuate path to a pressing beam carrier, to cause the pressing beam to bend the book block sheets outwardly away from the center line of the block, and superimposing tangential sliding motion on the pressing beam as it acts on the book block in the region adjacent the edges of the spine to thereby controllably form creases in the opposite sides of the block.

REFERENCES:
patent: 3413669 (1968-12-01), Thorp
patent: 4747740 (1988-05-01), Rate
patent: 5104275 (1992-04-01), Rathert

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