There is provided an alarm clock of the type which produces an electric signal and which operates in conjunction with an auxiliary device. The clock comprises first circuit means having first switch means for producing and cancelling the signal, and second circuit means having second switch means for switching the auxiliary device on and off. A single spring contact forms a common switch member of said first and second switch means. The advantage gained hereby is that the number of switches normally required to produce and cancel said signal and to energize and de-energize said auxiliary device is reduced.
An Electric Dispatcher switching system is actuated by an electric clock mechanism and is designed to set in motion automatically, either simultaneously or consecutively, and to stop in the same way, a number of electric appliances or machines. The Electric Dispatcher comprises concentric circles of connecting structure energized by the rotating commutator arm of an electric clock having permanent magnets or gliders fixed on the commutator arm. Electric current is distributed through the connector structure to an electric wire system connected to technical equipment of a factory or institution in conformity with a time table previously dialed on a sectorized dial plate of the Electric Dispatcher.
