Abstract: A line switch for a telephone set comprises a lever rockably mounted in the tand for the set and having as a rear part a plunger fin received in a slot passing through the stand to a handset cradle on its top. The lever has at its front a head carrying on its underside a pair of metal leaf springs of which front portions form spring contacts disposed over corresponding electroconductive pads on a printed wiring board mounted within the stand. The lever is biased by a torque spring to yieldably hold the upper part of the fin in the cradle. Removal and replacement of a handset from and to the cradle actuates the lever to produce engagement and disengagement, respectively, of the spring contacts with their corresponding pads. Such spring contacts and pads form, electrically speaking, a line switch adapted upon such engagement and disengagement, respectively, to produce a "short" and an "open" of terminations at the set of the tip and ring leads therefor.

Abstract: A zero insertion force connector for making contact with the electrical terminals of four printed wiring boards. Two pairs of parallel plates (16, 17; 18, 19), each pair mounted for lateral movement and having a plurality of terminals (29) for making contact with the corresponding electrical terminals of two printed wiring boards when inserted therebetween, are each separated and closed by the rotation of a shaft (37) having two cam plates (39, 40) mounted near the opposite ends thereof. The two cam plates (39, 40) mounted next to the opposite ends of the two pairs of plates (16, 17; 18, 19), respectively, converts the rotational movement of the shaft (37) to the lateral movement of the two pairs of plates (16, 17; 18, 19) thereby separating and closing each pair of plates (16, 17; 18, 19).