The device (1) of the ink to the linear displacement of the type comprising a carriage (3) carries the wiper blade is mounted movable in a rail extending along an edge of a glazed surface, the carriage (3) being driven by a driving device, characterized in that the carriage (3) comprises a first channel (31 a) of supply of a nozzle for generating at least one jet (110a) of the washing liquid of a first side of the wiper blade (11) and a second channel (31b) of supply of a nozzle for generating at least one jet of washing liquid of a second side of the wiper blade (11), the said channels opening out in a slideway (35) in which a hollow piston (34) comprising a lateral slot (37), connected by a hydraulic connection to a source of the washing liquid (15), is mounted to move between a first position in which the lateral slot (37) is facing the first channel (31 a) and a second position in which the lateral slot (37) is facing the second channel (31 b), so as to be able to generate a jet of washing liquid of a first side and a second side of the wiper blade (11) in the direction of displacement of the carriage carries the wiper blade.
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