| 摘要 |
A window latch comprises a cam keeper on one meeting window stile and a rotatable latch cam on the other meeting stile for locking engagement with the cam keeper. The latch cam has an actuator shaft operatively connected to a slide plate, which is movable along a straight line in response to rotation of the actuator shaft. The slide plate has a slot and fixed first engaging means. A base plate carries a locking feeler having second engaging means movable transversely of the direction of movement of the slide plate, the second engaging means normally engaging the first engaging means to prevent the movement of the slide plate. The slide plate and hence the latch cam are allowed to move when the locking feeler is pushed by said one meeting window stile to cause the second engaging means to disengage from the first engaging means into the slot. |
