workpieces by gravity owing to the inclination of the wall of the bowl 52 this distributor also comprises a loader 55 whose loading strip 77 is controlled by the energizing of the coil of an electromagnet 56 the drum 4 of the programmer p is rotated permanently by the first linkage each of its revolutions corresponds to a work cycle during which are successively carried out the following operations striking of the teeth in this case forty teeth for a cigarette lighter wheel constituting the complete toothing of the workpiece 71 then releasing this workpiece 71 which when completed falls by gravity and finally the feeding and positioning of a new workpiece throughout the formation of this toothing of the workpiece 71 and under the action of the cam with adjustable sectors 6 6 39 the lever 7 is kept in such a position that its tenon 78 remains disengaged from the coupling 9 which under the effect of return means not shown connects the dog clutches 8 and 8 39 thereby holding the driving shaft 28 engaged with the drive shaft 43 after the formation of a tooth d2 fig4 this driving shaft 28 on the one hand by the rotation of the eccentric 33 causes the backward inclination of the lever 29 moves the chisel 65 away from the workpiece 71 arrow f3 fig6 and on the other hand by the driving device 34 engaged.