Appeal No. 2003-1254 Page 5
Application No. 09/284,793
As shown in Figures 1-7 of Strömberg, retaining device 1 is adapted for retaining
a knife blade 2 on a rotatable knife-retaining cylinder 3. The knife blade 2 is adapted
for cutting, perforating or otherwise treating a running web 4, preferably a paper web,
which, for example, runs through a printing press (not shown). The web 4 runs through
a space between the knife-retaining cylinder 3 and a rotatable counter pressure cylinder
5 and is shown with dashed and dotted lines in Figure 1. The knife-retaining cylinder 3
has a number of slots 6 wherein knife blades are wedged up by means of a wedge
device K. The wedge device K comprises a retaining ruler 7 which is adapted to retain
the knife blade against one side wall 8a of the slot 6. The wedge device K also
comprises a tightening ruler 9, disposed beside the retaining ruler 7 and adapted to
engage the opposite side wall 8b of the slot 6. The retaining ruler 7 has a wedge
surface 101 facing the tightening ruler 9 and extending in a direction sloping downwards
relative to the slot 6. The wedge surface 10 of the retaining ruler 7 cooperates with a
corresponding wedge surface 11 on the tightening ruler 9.
Strömberg's retaining ruler 7 includes a support portion 12 through which the
blade 2 displaces the retaining ruler 7 during an adjustment maneuver. This support
portion 12 may be provided on different portions of the retaining ruler 7 and may have
various designs. A suitable position for the support portion 12 is down below on the
1 The lead line for wedge surface 10 is incorrect in Figure 3 and correct in Figures 2 and 4.
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