In a device for feeding book blocks (2) into the infeed channel (11) of a subsequent processing arrangement with an intermittently rotating star feeder (31) that features several block receptacles (34) that are arranged on a roller divided into disks (33) in a star-shaped fashion and respectively feature perpendicularly aligned first and second locating surfaces (34.1, 34.2), it is proposed that the star feeder (31) features several clamping jaws (36) that are respectively assigned to the block receptacles (34) and arranged parallel to the second locating surfaces (34.2), as well as movable relative to the latter. The star feeder (31) can be operated with a significantly higher angular acceleration and rotational speed without risking that the book blocks lose contact in the block receptacles (34). Even loosely gathered book blocks (2) can be flawlessly processed.