Clam shell housing for dual web bursting apparatus

Details Clam shell housing for dual web bursting apparatus Clam shell housing for dual web bursting apparatus

1990-11-29

1991-10-29

Yost, Frank T.

Severing by tearing or breaking

Breaking or tearing apparatus

Work-parting pullers

225 97, B65H 3510

Patent

active

050608380

ABSTRACT:
Apparatus for conveying upper and lower webs of material having equally spaced, successive, transverse lines of weakening along a longitudinal path and for separating the webs along the transverse lines of weakening. The apparatus includes: a longitudinally extending support structure; a bottom pair of upper and lower, vertically spaced feed rollers rotatably supported by the structure; a pair of upper and lower, vertically spaced burster rollers, the lower burster roller having a shaft and being rotatably supported by the structure downstream of the bottom feed rollers; a clam shell housing pivotably mounted on the lower burster roller shaft, wherein the upper burster roller is supported by the clam shell housing; and a top pair of upper and lower, vertically spaced feed rollers rotatably supported by the clam shell housing.

REFERENCES:
patent: 2258428 (1941-10-01), Stalder
patent: 2649156 (1953-08-01), Stafford
patent: 4454973 (1984-06-01), Irvine
patent: 4524557 (1985-06-01), Silverman et al.
patent: 4570923 (1986-02-01), Hooper et al.
patent: 4618085 (1986-10-01), Kimura et al.
patent: 4619101 (1986-10-01), Havey et al.
patent: 4690344 (1987-09-01), Yokota

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