Patent ID: 7686557

Claim:
A device for the mechanized backing of rounded book blocks ( 2 ) that are clamped adjacent the book block spine, comprising: a pressing beam ( 9 ) having an effective area ( 9 a ) that acts upon the block spine ( 2 a ) with a pressing force; a slide ( 7 ) that accommodates the pressing beam ( 9 ) and can be alternately displaced along arc-shaped races ( 6 ) in a swinging fashion by driving means ( 17 ), toward one side and the other side of the block spine ( 2 a ) relative to a spine center ( 2 b ), in a height-adjustable supporting bearing ( 5 ) that is laterally supported against the effect of a spring element ( 29 ); means ( 21 , 22 , 32 , 33 ) for controlling the lateral position of the supporting bearing ( 5 ); means ( 10 , 11 , 12 ) for lowering the pressing beam ( 9 ) onto the block spine ( 2 a ) in a pressing stroke and for raising the pressing beam to a starting position for a return stroke; wherein said lowering produces an eccentric starting position of the pressing beam ( 9 ) on the block spine ( 2 a ) in the form of a swinging position of the slide ( 7 ) that is offset toward the opposite side of the block spine center ( 2 b ) relative to the respective side to be backed thereafter.