Sugar crystallizer apparatus

Claim 1

A CRYSTALLIZER COMPRISING A SHAFT, A PLURALITY OF HEAT TRANSFER COILS CARRIED IN SERIES ON AND COMPLETELY SUPPORTED AT THEIR ENDS BY SAID SHAFT, THE DELIVERY END OF ONE COIL BEING CONNECTED THROUGH SAID SHAFT TO THE RECEIVING END OF THE NEXT COIL, AND SAID COILS EXTENDING RADIALLY FROM SAID SHAFT AN APPRECIABLE DISTANCE, MEANS FOR INTRODUCING A HEAT TRANSFER MEDIUM TO THE STARTING END OF THE FIRST COIL AND FOR WITHDRAWING IT FROM THE DISCHARGE END OF THE LAST COIL A CONTINUOUS HELICAL STIRRER SCROLL POSITIONED RADIALLY WITHIN SAID COILS AND AXIALLY INCLINED TOWARDS ONE END OF SAID SHAFT, SAID STIRRER SCROLL EXTENDING THE LENGTH OF SAID SHAFT, ARCUATE STIRRER MEANS POSITIONED RADIALLY OUTWWARDLY OF AT LEAST SOME OF SAID COILS AND AXIALLY INCLINED TOWARDS THE OTHER END OF SAID SHAFT, SAID STIRRER MEANS BEING OF SUBSTANTIALLY THE LENGTH OF SAID SHAFT, A SCRAPER BAR POSITIONED AT BOTH ENDS OF SAID SHAFT AND EXTENDING RADIALLY THEREFROM, AND A SHORT ARCUATE STIRRER SECURED TO EACH OF SAID SCRAPER BARS, SAID STIRRER MEANS BEING SUBSTANTIALLY DIAMETRICALLY OPPOSED TO SAID STIRRER SCROLL AT ALL PORTIONS THEREOF.