Abstract: Monitoring a series of products of the kind in which the presence of foreign bodies in the product being monitored is detected by the characteristic magnetic field phase difference each material exhibits. The signal generated by a satisfactory product having no foreign body in it is used as the datum for judging whether the next subsequent product is free from a foreign body or not.

Abstract: A conveyor system having transverse positions for use in conjunction with diverting or sorting and detecting operations. The conveyor system employs elastic strand members which are driven by a drive roller connected to a supporting frame in a transversely fixed manner while the strands are moved transversely by a guide roller positioned at an opposite end of the supporting frame. The conveyor system is especially adaptable to dynamic weighing and counting systems. The conveyor system affords a rapid adjustment for different transverse positions employing a positioning mechanism which is activated by two fluid and preferably pneumatically driven cylinders with activating rods.