Appeal No. 1998-1020 Page 7
Application No. 08/381,423
10) are designed to permit passage of a first sheet (G1)
therebetween while preventing advancement of a second sheet
(G2) which may have been conveyed together with the first
sheet. Specifically, the roller (10) rotates in a direction
such that the top peripheral face thereof travels in the
upstream direction to halt a second sheet (G2). While the
clamping between the rollers (9, 10) does effect a wavy
contour of the conveyed sheet (G1), as illustrated in Figure
4, the disclosed arrangement is specifically designed for
advancement of sheets one at a time and thus would not, in our
opinion, have commended itself for use with a continuous web
width adjusting bustle device as disclosed by Barkley.
Yamashita discloses opposed, laterally offset rollers (2)
fixedly mounted on drive shafts (1, 1) which engage opposite
sides of a sheet-like article (4), forming a wavy pattern in
the article, so as to obtain sufficient gripping force to
convey the sheet-like article (column 3, lines 41-46). While
Yamashita does illustrate an arrangement of laterally offset
rollers disposed on opposite sides of a moving sheet material
forming a wavy pattern in the web, we find no teaching in
either Yamashita or Barkley which would have suggested the use
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