Mechanical automatic pushbutton dialing device for telephones

摘要

A mechanical automatic pushbutton dialing device for telephones includes a roller and a planar plate having a plurality of holes. The roller is capable of rolling along the planar plate in a linear direction and selectively entering one of said holes of the planar plate by means of the arrangement of a motor, springs, and a roller guiding mechanism. The downward force generated at the instant when the roller falls into the hole is utilized to achieve automatic pushbutton dialing. The numerals to be dialed and the number of times of dialing may be freely determined by means of a motor controller. The device utilizes movable clamps to adjust the pushbutton dialing positions so as to match the size of the telephone set and the shape of the pushbuttons. Hence, the device may match different telephone models.