Abstract: A safety window comprising a frame unit and central cartridge, on which are mounted security bars, is employed to provide an easy exit route for an operator in the event of an emergency. The safety window is maintained in the closed position by spring biased locking bar mechanism. When required, the operator manually activates the locking bar mechanism so opening the window. This process results in the central cartridge and associated security bars to pivot through 180° so as to locate in an open position that is clear of the frame unit.