| 摘要 |
A novel splicing tape dispenser-applicator comprises an actuator assembly, an applicator assembly, and a pawl assembly. The actuator assembly includes an operating member which is adapted to reciprocate along a selected path, and the applicator assembly is mounted to the operating member of the actuator assembly whereby it can reciprocate between a first retracted position and a second extended position. The applicator assembly comprises a rotatable pentagonal applicator wheel coupled to a rotatable pentagonal ratchet wheel. The pawl assembly includes two pawls arranged to engage the ratchet wheel so that when the applicator assembly moves from its first retracted position to its second extended position, the first pawl will cause the ratchet wheel to advance the applicator wheel one-half face in a predetermined direction, and when the applicator assembly moves from its second extended position to its first retracted position, the second pawl will cause the ratchet wheel to advance the applicator wheel another one-half face in the same predetermined direction. The applicator wheel in its first retracted position is disposed so that one of its corners is aligned with a reciprocating cutter blade, and the applicator assembly in its second extended position is disposed so that one of its faces is positioned so as to squarely engage a splicing block disposed directly beneath the dispenser-applicator. Additionally, means are provided so that suction is selectively applied to apertures in the several faces of the applicator wheel.
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