Window lock

A window lock for a window having a window frame and a movable window sash comprising, a slider having a cam member, a ramped keeper, and means for moving the slider in a path extending lengthwise thereof to cause the cam member to coact with the ramped keeper in establishing either a locked or unlocked condition of the window;

• the improvement comprising:
• a housing;
• a handle rotatably mounted on said housing for movement between two limit positions and operable to move said slider along said path and said slider and handle having coacting means operable in both limit positions of the handle to preclude any force other than that applied by the handle such as gravity or other outside force from moving said slider along said path.

A window lock for a window having a window frame and a movable window sash comprising, a slider having a roller defining a cam member, a ramped keeper, and means for moving the slider in a path extending lengthwise thereof to cause the cam member to coact with the ramped keeper in establishing either a locked or unlocked condition of the window;

• the improvement comprising:
• each of said cam member and ramped keeper being bevelled to resist any separating movement in a direction normal to said path as a result of flexibility of the window frame and window sash as may result due to high loads.