conveyor belt 30 allowing a passage of the flat clothing article a on said conveyor belt 30 the roof plate 13 and the spoil 16 tilt around the pivot axis 14 at the same time because its attachment and are configured to be on opposite positions so when the roof plate 13 is on the first position the spoil 16 is on the second position and vice versa the pivot axis 14 rotation is activated by driving means as for example an electric motor a hydraulic piston a servomotor a lineal motor an electromagnetic pusher etc the roof plate 13 the pivot axis 14 the driving means and the spoil 16 are linked to guides 17 along which all of them can slide said guides 17 are not parallel regarding the conveyor belt 30 upper said so sliding said devices on said guides 17 the distance between the pivot axis 14 and the conveyor belt 30 is increased and the auxiliary device is disabled allowing for a manual loading operation mode shown on fig1 b this retired position of the roof plate 13 is the thereafter called third position the sliding movement along said guides 17 is achieved on the preferred embodiment illustrated on fig1 a to fig7 by a driving means 18 illustrated as a piston but any other driving mean is contemplated as a lineal motor a threaded shaft or any.