Apparatus for subdividing a web of wrapping material into sectio

Details Apparatus for subdividing a web of wrapping material into sectio Apparatus for subdividing a web of wrapping material into sectio

1980-03-03

1982-05-18

Yost, Frank T.

Cutting

Tool engages work during dwell of intermittent workfeed

With means to produce plurality of work-feed increments per...

83152, 83154, 83159, 83259, 83282, 83278, 83465, B26D 701

Patent

active

043298982

ABSTRACT:
Apparatus for subdividing a web of wrapping material into sections of predetermined length has a reciprocable carriage for a pair of grippers which are pivotable into engagement with the web to thereby clamp the web against the carriage while the latter moves forwardly. This advances the web through a distance which approximates but is less than the distance necessary to advance the web by the length of a section. The grippers are thereupon disengaged from the web while the carriage continues to move forwardly, and the web is braked by one or more brushes so that two pawls whose pallets are biased against the web can catch up with a pair of marginal notches in the web. The pallets enter the respective marginal notches and complete the forward movement of the web. A mobile knife cooperates with a stationary knife to sever the web and to thus separate a section from the leader of the web while the carriage moves rearwardly. The web is prevented from sharing the rearward movement of the carriage by the bristles of one or more stationary blocking brushes. An electromagnetically actuatable holder is provided to prevent any movements of the web when the making of sections is interrupted on purpose.

REFERENCES:
patent: 3073591 (1963-01-01), Cosentino
patent: 3094925 (1963-06-01), Huber
patent: 3446499 (1969-05-01), Ringler
patent: 3469754 (1969-09-01), Parker
patent: 3477627 (1969-11-01), Webers
patent: 3605538 (1971-09-01), Bohmer et al.
patent: 3757619 (1973-09-01), Gianese
patent: 4077289 (1978-03-01), Rudszinat
patent: 4082261 (1978-04-01), Johannisson

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