A two cables mechanism for opening and closing a sliding window comprising:
- an outer frame, a sliding window, a lower two track pulley, an upper two track pulley, a lower single track pulley, an upper single track pulley, a left cable made of elastic and flexible material, a right cable made of elastic and flexible material, a turning handle, a gearbox, an electrical motor, a control unit, an upper limit switch, a lower limit switch, a safety system, a burglar alarm, a left spring, a lower spring and an upper spring;
- said sliding window comprising:
- a sliding frame, a pane, a lower left roller, an upper left roller, a lower right roller and an upper right roller;
- wherein said pane is made of transparent material;
- wherein said pane is framed in said sliding frame;
- wherein said sliding frame comprising:
- a lower left corner, an upper left corner, a lower right corner and an upper right corner;
- wherein said lower left roller is installed at said lower left corner, said upper left roller is installed at said upper left corner, said lower right roller is installed at said lower right corner and said upper right roller is installed at said upper right corner;
- said outer frame comprises two vertical parallel guides, a lower outer horizontal bar and an upper outer horizontal bar;
- wherein said vertical parallel guides guide said sliding frame in sliding up and down within said outer frame;
- wherein said lower left roller, said upper left roller, said lower right roller and said upper right roller facilitate smoother sliding up and down within said outer frame of said sliding frame;
- said outer frame comprising a lower left outer corner, an upper left outer corner, a lower right outer corner and an upper right outer corner;
- said lower two track pulley is installed at said lower left outer corner;
- said upper two track pulley is installed at said upper left outer corner;
- said lower single track pulley is installed at said lower right outer corner;
- said upper single track pulley is installed at said upper right outer corner;
- wherein said lower two track pulley comprising:
- a first lower track and a second lower track;
- wherein said upper two track pulley comprising:
- a first upper track and a second upper track;
- said left cable comprising an upper left end and a lower left end;
- wherein said lower left end is attached to said lower left corner;
- wherein said upper left end is attached to said upper left corner;
- wherein said left cable is strung downwards starting from said lower left end and is wound around said first lower track;
- next said left cable is strung upwards and is wound around said first upper track;
- next, said left cable is strung downwards and ends at said upper left end, which is attached to said upper left corner;
- said right cable comprising an upper right end and a lower right end;
- wherein said lower right end is attached to said lower right corner;
- said upper right end is attached to said upper right corner;
- wherein said right cable is strung downwards starting from said lower right end and is wound around said lower single track pulley;
- next, said right cable is strung leftwards and is wound around said second lower track;
- next, said right cable is strung upwards and is wound around said second upper track;
- next, said right cable is strung rightwards and is wound around said upper single track pulley;
- next, said right cable is strung downwards and ends at upper right end, which is attached to said upper right corner;
- said turning handle is mechanically connected to lower two track pulley and is configured to manually turn said lower two track pulley;
- whereby, turning in clockwise direction said lower two track pulley causes said left cable to pull down said lower left corner while releasing said upper left corner;
- whereby, turning in clockwise direction said lower two track pulley causes said right cable to pull down said lower right corner while releasing said upper right corner;
- whereby, turning in counterclockwise direction said lower two track pulley causes said left cable to pull up said upper left corner while releasing said lower left corner;
- whereby, turning in counterclockwise direction said lower two track pulley causes said right cable to pull up said upper right corner while releasing said lower right corner;
- thereby, said two cables mechanism is configured to move said sliding window downwards by turning said turning handle in clockwise direction and said two cables mechanism is configured to move said sliding window upwards by turning said turning handle in counterclockwise direction.