Can-sorting device

Claim 1

A CAN SORTING DEVICE FOR SORTING FROM A CONVEYOR LINE CANS HAVING A DARK BAND AT A PREDETERMINED HEIGHT AROUND THEIR OUTER PERIPHERY FROM CANS NOT SO MARKED BY USING ELECTROMAGNETIC MEANS BESIDE THE CAN CONVEYOR TO PULL A CAN OFF SAID CONVEYOR WHEN MAGNETIZED; SAID DEVICE BEING CHARACTERIZED BY PHOTOELECTRIC CELL MEANS WHICH CONTROLS THE MAGNETIZATION AND DEMAGNETIZATION OF THE ELECTROMAGNETIC MEANS ACCORDING TO WHETHER A PREDETERMINED QUANTITY OF LIGHT IS OR IS NOT DIRECTED AT SAID PHOTOELECTRIC CELL MEANS, A WAVE SHAPING CIRCUIT FOR CONVERTING PHOTOELECTRIC ENERGY FROM SAID CELL MEANS INTO A DEFINITE WAVE PATTERN, AND TIMING MEANS UTILIZING ONE PULSE PORTION OF SAID DEFINITE WAVE PATTERN FOR ENERGIZING SAID ELECTROMAGNETIC MEANS FOR A PREDETERMINED AND DEFINITE TIME INDEPENDENT OF THE TIME OF ACTUATION OF SAID PHOTOELECTRIC CELL MEANS, SAID PHOTOELECTRIC CELL MEANS BEING COMBINED WITH LIGHT DIFFUSING MEANS FOR CAUSING REACTION OF SAID CELL MEANS TO THE GENERAL INTENSITY OF REFLECTION OF SAID CAN AT BAND HEIGHT RATHER THAN TO SPOT REFLECTION.