Photographic material grasping and dragging device for photographic material developing machines, in particular of photographic paper

In a photographic developing machine having an initial loading area, a terminal unloading area and having a guide band (28), a grasping and dragging device for photographic paper, adapted to produce the dragging of said photographic paper through the machine for its developing, the device sliding from said initial loading area to said terminal unloading area, said device being shaped as a fork (25) provided with a first portion (26) and a second portion (27) respectively for the winding of said photographic paper and for the hooking and unhooking with respect to said guide band (28), carried out respectively in the machine loading and unloading area, through at least an unhooking element (68), wherein said second portion (27) comprises clamping means (32) co-operating with said guide band (28) and sprung articulated means (31), adapted to drive said clamping means (32) from a first to a second operative position, in which they are respectively disengaged and engaged with respect to said guide band (28), and vice versa, wherein said clamping means comprise a first and a second grasping jaw (32) placed laterally to said guide band (28) and articulated on a plate body (30) secured to said fork portion (26), each one of said first and second grasping jaws (32) comprise a first and a second planar part (57, 58) which are orthogonal to each other, said first part (57) being adapted to be engaged or disengaged with respect to said guide band (28) and said second part (58) being provided with at least a transversal through hole (59) and a lower opened cavity (64).