A feeder is provided with a pushing member that pushes the carrier tape against a rail, an engaging member engageable with indexing holes of the carrier tape, and an interlocking mechanism that moves an engaging member upwards by interlocking with the upwards movement of the pushing member. The engaging member engages with indexing holes of the carrier to restrict the movement of the carrier tape to the insertion section side. The interlocking mechanism separates the engaging member from the indexing holes of the carrier tape by interlocking upwards movement of the engaging member with upwards movement of the pushing member, allowing movement of the carrier tape in the conveyance direction.