Programmer

Abstract

This programmer comprises programme-cams corresponding to a plurality of programmes having clearly separate starting points disposed at angular intervals from one another. It further comprises a control element adapted to be rotated manually for selecting the initial position of one of the programmes. This element comprises lateral pins adapted to engage corresponding orifices formed in a coaxial registering control cam. On the opposite side of this cam a disc rigid with the programme-cams is provided; this disc is rigid with the programme-cams but spaced therefrom. The disc comprises ramp means cooperating with bearing faces formed in the control cam. Spring means interconnect the disc and the control cam in diagonal directions. The ramp means and their bearing faces are so oriented that when the control element is driven manually in the forward direction the control cam rotatably driven by the pins is shifted axially away from the manual control element by the ramp means with the assistance of spring means until the beak of an arm is actuated for controlling a switch adapted to control the fast rotation of the disc. When the disc is thus driven automatically for step by step rotation at a fast rate its ramp means cause the control cam to be shifted towards the control element, the pins engaging again the corresponding orifices until the beak is actuated again, the switch being thus actuated for stopping the fast rotation of the disc and programme-cams for ending the programme selection.