1. An improved device for connecting and disconnecting in a continuous sequence a number of electrical or mechanical functions, said device comprising a cam shaft the cam means of which are arranged, upon rotation of the shaft, to connect and disconnect, respectively, said functions in accordance with a predetermined programme, the improvement comprising said cam shaft being movable in a direction transverse to its longitudinal extension towards and away from a position wherein said programme functions are connectable by means of said cam means, a toothed disc mounted on said cam shaft, a wheel mounted on said cam shaft in a position adjacent said toothed disc, a second shaft arranged in parallel with said cam shaft, a toothed segment section pivotally mounted on said Second shaft for cooperating with said toothed disc on the cam shaft, and a disc element partaking in the pivotal movements of said toothed segment section and cooperating with said wheel on the cam shaft, one extreme tooth of said toothed segment section engaging in said toothed disc in position of rest of said cam shaft, said toothed segment section being adapted, upon initial rotary movement of said cam shaft, to bring said toothed segment section to advance stepwise from one tooth to the next of said toothed segment section to displace said cam shaft transversely relative to its axis along a controlled path of movement while simultaneously turning the toothed segment section in a direction opposite to the direction of rotation of said toothed disc, past the opposite extreme tooth of said toothed segment section, in which position said wheel on said cam shaft is adapted to roll up onto an edge portion of the disc element, thereby moving said cam shaft against the action of gravity or the action of a spring exercised on said toothed segment section and said disc element, to bring said cam shaft to the position thereof wherein it switches on the programme functions in question.