US PATENT SUBCLASS 493 / 413
.~.~ Folding of indeterminate length work by swinging work guiding means (e.g., zigzag folding, etc.)

Current as of: June, 1999
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493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

395  DF  BENDING {6}
405  DF  .~ Folding {13}
413.~.~ Folding of indeterminate length work by swinging work guiding means (e.g., zigzag folding, etc.) {1}
414  DF  .~.~.~> Swinging passage {1}

DEFINITION

Classification: 493/413

Folding of indeterminate length work by swinging work guiding means (e.g., zigzag, folding, etc.):

(under subclass 405) Method or apparatus wherein at the time a crease line is formed the workpiece is a web of such length that no more than one end thereof is recognized (engaged) including use of means to direct the workpiece by physical engagement therewith, which means alternates to-and-fro to direct a portion of the workpiece in a first direction and then to direct a succeeding portion of the workpiece in a second direction, such that succeeding portions of the workpiece are alternately laid one upon the other in a regular order including the application of stress to form subsequent crease lines extending generally normal to the direction of workpiece movement.

(1) Note. Stress may be applied to the workpiece of this subclass by the weight of work laid thereupon.

SEE OR SEARCH THIS CLASS, SUBCLASS:

411, for folding along previously made crease lines by a swinging work guide means.