How Casement Window Handles Work:

The basic function of a casement window handle is to provide leverage to move the window sash and engage the locking mechanism.

• Espag Handles: Turning the handle rotates a spindle that runs into the window frame. This spindle connects to a series of locking points (bolts or cams) that move to secure the window tightly against the frame at multiple locations.
• Cockspur Handles: The handle is manually pushed so that the spur engages with the wedge on the frame. The shape of the spur and the wedge creates a secure point.
• Tilt and Turn Handles: Different positions of the handle control different functions. One position allows the window to tilt inwards for ventilation, while another allows it to swing fully open. A locked position secures the window completely.