Appeal No. 96-4007
Application No. 08/294,769
Each gripper is formed from a strip of metal having two straight
portions 42 and 43, the latter terminating in a spur 44 operative
to impinge the film (Fig. 11). The straight portion 43 is
relatively short and is shaped to form a loop 45 which embraces
one of the cross bars 46 of a link of the chain. The cross bar
acts as a fulcrum on which the gripper oscillates. Each gripper
is provided with a curved portion 47 between the loop 45 and the
straight portion 42 to permit the straight portions 42 and 43 to
lie approximately parallel with the chain when it is in its
horizontal position. When the conveyor chains 41 pass around the
downstream sprocket wheels, the grippers are caused to swing on
the cross bar of the link and the spurs 44 are drawn from the
film, and hence the film is released (Fig. 10). As shown in 2
Figure 5, when the conveyor chains 41 pass around the sprocket
wheels 29, 30 and 31, the grippers are caused to assume an open
position to receive the film. Belts and pulleys may be
substituted for the chains 41 and the sprocket wheels.3
2See page 2, left column, line 6, to page 2, right column,
line 10, of Beidler.
3See page 3, left column, lines 17-19, of Beidler.
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Last modified: November 3, 2007