A sheet feeder in which a cam member shiftable transversely of the sheet feed path provides concomitant adjustment relative to the feed rollers of stripper shoes carried by resilient arms integral with stripper supports mounted for movement as a unit relative to the feed rollers and in which elements on the supports adjust the positions of the resilient arms for individual adjsutment of the shoes. A rib on a curved guide adjacent to the feed rollers prevents snapping of sheets against the feed rollers as they are picked up by an accelerating nip formed adjacent to the end of the guide by a pair of acceleration rollers, one of which is formed with a groove for accommodating the nip.