| 摘要 |
A puncher for marking devices, consisting of single reciprocating press ram, a line of punch pins aligned below the press ram with a spacing therefrom. Spacers are selectively inserted between the press ram and the corresponding punch pins, for depressing those punch pins by the press ram which face the spacers thus inserted, for punching a sheet-like material. By controlling the spacers, a plurality of mark holes are bored at a time. The material to be punched may be fed slowly during the actual punching of mark holes, but quickly for spaces between marks.
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