Abstract: A bottle labeling apparatus is provided in known manner with a turntable for picking up bottles at one location and delivering them elsewhere. The turntable has a plurality of rotary heads at its perimeter, the heads rotating regularly during a part of their cycle but being accelerated or retarded during the pickup and delivery operations by means of a cam and follower. Each rotary head carries a clamp comprising a pair of resiliently urged jaws for picking up and releasing a bottle when the axis of the bottle at the pickup and discharge stations, respectively, lies within the plane of symmetry of the clamp jaws.