characterised by being movable axially relative to cap to deform flanges thereof, e.g. to press projecting flange rims inwardly

Full Title

Closing bottles, jars or similar containers by applying caps (caps per se B65D41/00) > by applying flanged caps, e.g. crown caps, and securing by deformation of flanges > Capping heads for securing caps > characterised by being movable axially relative to cap to deform flanges thereof, e.g. to press projecting flange rims inwardly