Patent ID: 7574961

Claim:
A device ( 1 ) for the application and/or for the removal of elements for the connection of a rail to a railway track sleeper, comprising: at least one lever ( 2 , 3 ) mounted on a frame ( 4 ) so as to be able to rotate around an axis of rotation ( 5 , 6 ) and equipped with at least one pressure organ ( 7 , 8 ) adapted to engaging the connecting element; at least one cylinder-piston group ( 9 ) adapted to driving the lever ( 2 , 3 ) in order to assemble or disassemble the connecting element, said cylinder-piston group ( 9 ) comprising a cylinder body ( 10 ) connected to said frame ( 4 ) and a piston ( 11 ) slidingly housed within the cylinder body ( 10 ) and movable with respect to the cylinder body ( 10 ) under the action of pressurised fluid acting on said piston ( 11 ) inside said cylinder body ( 10 ), at least a first ( 12 , 14 ) and a second ( 13 , 15 ) stop surface cooperating in such a way as to form a stop device ( 16 , 17 ) for stopping the lever ( 2 , 3 ) in a defined position with respect to the frame ( 4 ), wherein said stop surfaces are formed, one ( 12 , 14 ) of them on the piston ( 11 ) and the other one ( 13 , 15 ) on the cylinder body ( 10 ) of said cylinder-piston group ( 9 ) such that, when said first stop surface ( 12 , 14 ) abuts against said second stop surface ( 13 , 15 ), said piston ( 11 ) stops in a limit position with respect to said cylinder body ( 10 ) and wherein said piston ( 11 ) is connected with said lever ( 2 , 3 ) in such a way that, when said piston ( 11 ) stops in said limit position, said lever ( 2 , 3 ) stops in said defined position with respect to the frame ( 4 ).