| 摘要 |
A wire stitcher includes a cutter for cutting a length of wire W from a supply thereof and a stitcher head having a former and driver for forming and driving the length of cut wire for binding a set SS of sheets. The length of cut wire which is presented to the head by a wire advancing and cutting mechanism is automatically determined in dependence upon the thickness of the set SS. The mechanism includes a movable gripper block which advances the wire and the cutter is carried on a movable cutter block. The gripper block and the cutter block are biased towards each other by a spring and driven by a common drive cam.
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