Abstract: A rotary carton feeder includes a planetary drive having two sun rings with angular phase, cam surfaces on each ring about a common axis. Planetary members rotate about the common axis with a number of said planet members in operative engagement with one of the cams and another number of planet members in operative engagement with a second one of said sun rings. Spindles are selectively combined with selected planet members to selectively accommodate handling variably sized cartons of 1, 2, 3 or 4 count. Suction cups on spindle ends traverse an enclosed path having four cusps. Variations are disclosed.