Hay harvesting machine provided with at least a swathing rotor equipped with a deflector with adjustable position

A hay harvesting machine for a windrower for cut crops, comprising:

• a frame;
• several windrowing rotors secured to said frame and which are driven in rotation during work about approximately vertical axes;
• supports equipped with carrier wheels and which are fitted to said vertical axes, said frame comprising,
• a draft beam, and
• a connecting beam to which at least one of the windrowing rotors is connected, said
• connecting beam being articulated with respect to the draft beam so that said connecting beam can move with the at least one of the windrowing rotors connected thereto laterally to the right and to the left;
• means for causing said moving the connecting beam and the at least one of the windrowing rotors connected thereto;
• a windrowing deflector equipping at least a corresponding rotor of the connecting beam which is located farthest back, a position of said windrowing deflector being adjustable by means for shifting the windrowing deflector with respect to the corresponding rotor;
• retractable stop means for allowing or hindering said moving of the connecting beam and the at least one of the windrowing rotors connected thereto from one lateral position to the other;
• and
• a device for controlling the retractable stop means, said controlling device being actuated by the means for shifting the windrowing deflector.