| 摘要 |
The invention concerns a perforating device consisting of a rectangular base plate (6) bearing four columns forming pins (9) arranged at each corner, whereon are urged to slide a cutting die (5), a first set of four springs (8b), a guide (4), a second set of four springs (8a), a typesetting plate (1) provided with punches (3), locked by their heads, by a maintaining plate (2) urged by a screw system or the like to be fixed on the typesetting plate (1).
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