| 摘要 |
This invention discloses a rotary binder for applying gummed tape to continuous forms having perforated margins wherein two heads are mounted above and below the forms, and which heads rotate in synchronism in the same direction as a roller advancing the forms. The heads carry cooperating mechanisms having a trajectory equal to an integral multiple of the pitch of the perforation and which affix, cut and tear off a strip from a roll of gummed tape. The binder also includes mechanisms for unwinding the roll before forming the strip; mechanisms for stopping the roll before detaching the strip; mechanisms for causing the front of the strip to pass through one of the perforations and mechanisms for bending the tip of the strip and securing it to the bottom sheet of the form. |
