Cover breaker mechanism

Details Cover breaker mechanism Cover breaker mechanism

1977-01-24

1979-05-15

Pellegrino, Stephen C.

11 4, B42C 1100

Patent

active

041539630

ABSTRACT:
A cover breaker mechanism which functions to shape a cover to the back of a book which is moving in one direction. The cover breaker mechanism includes a bottom plate for engaging the bottom portion of the cover which forms the back of the book and a pair of side bars for engaging portions of the cover which lie adjacent the back of the book on opposite sides of the book. The bottom plate and side bars are carried on a support which moves from a start position in a first path which causes the bottom plate and side bars to act on the cover, and in a second path spaced from the first path for returning the bottom plate and side bars to the start position. A means is provided for moving the support which includes a pair of members which are supported on respective eccentrics. A crank mechanism rotatably moves the members relative to the eccentrics and a cam and linkage mechanism is provided for rotating the eccentrics during at least a part of the time that the crank is moving the members so as to effect movement of the support along the first and second paths.

REFERENCES:
patent: 1248252 (1917-11-01), Bredenberg
patent: 1274154 (1918-07-01), Etheridge
patent: 2083720 (1937-06-01), Lariviere

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