David J Fischer, 32Overland Park, KS

4494741, Jan 22, 1985

Apr 1, 1983

6/481118

David L. Fischer - Green Bay WI
William E. Waterstreet - Green Bay WI

B41L 132

270 39

Apparatus for perforating Z-folding, and further processing long tissue webs to form stacks of Z-folded facial tissues or the like for being packaged in consumer boxes. In one embodiment, two webs are perforated and superimposed at the nip of counterrotating rolls so the perforations of one web are staggered between the perforations of the other web. The webs are Z-folded by vacuum adhering portions of the superimposed webs alternately to the portion of each roll below the nip, drawing the adhered portions back and forth out of the mutual tangent plane forming the nip to start Z-folds. The folds are creased by further means. A continuous stack of Z-folded tissues is formed and can be subdivided into counted stacks of tissue for packaging. In another embodiment, the webs are perforated and superimposed as before, and the web is then alternately directed to first and second folding stations, each of which includes a counterrotating pair of folding rolls which Z-fold the superimposed webs in essentially the same manner as the perforating roll of the first embodiment. When a predetermined length of the superimposed webs has been Z-folded by one folding station, the superimposed webs are transferred to the other folding station.

5119707, Jun 9, 1992

Mar 21, 1991

7/672732

David L. Fischer - De Pere WI

Green Bay Engineering and Technical Service, Ltd. - Green Bay WI

B26D 162

83698

A fabricated clamp bar that goes into a channel in a machine roll to hold a knife, anvil, or other tool in the channel. The bar has an internal cavity or chamber in one side of the bar. The chamber has an exposed movable outer side wall placed at the side of the machine roll channel. When the internal cavity or chamber is pressurized with a non-compressible fluid such as grease, the movable side of the chamber is forced outward causing the bar to expand in width, causing the clamping side of the bar to trap the tool to be held in the roll against the side of the channel in the roll of the machine. Also disclosed is the use of an intermediate buffer block between the clamp bar and tool to be held in the roll. Spring loaded members may lightly clamp and pre-position the tool via strategically located holes at each end of the tool until pressure is applied to the fluid.