Collector cells for electrostatic precipitators

Claim 1

A COLLECTOR CELL FOR AN ELECTROSTATIC PRECIPITATOR COMPRISING A PLURALITY OF SPACED-APART, PARALLEL, COLLECTOR PLATES, END SHEETS FOR SAID CELL EXTENDING SUBSTANTIALLY PARALLEL TO SAID PLATES AND SPACED OUTWARDLY FROM THE END ONES OF SAID PLATES, A PLURALITY OF SPACED-APART, U-SHAPED CHANNELS EXTENDING BETWEEN AND SUPPORTED FROM SAID SHEETS, SAID CHANNELS HAVING BASES WITH A PLURALITY OF SPACED APART SLOTS THEREIN, ALTERNATE ONES OF SAID PLATES HAVING TABS EXTENDING THROUGH SAID SLOTS INTO THE SPACES BETWEEN THE LEGS OF SAID CHANNELS, THE OUTER ENDS OF SAID TABS HAVING SLOTS THEREIN, CLIPS OF SPRING METAL HAVING SPACED-APART PORTIONS IN CONTACT WITH THE OUTER EDGES OF SAID LEGS MIDWAY BETWEEN OTHER PORTIONS OPPOSITE SAID TABS AND SPACED OUTWARDLY FROM SAID EDGES, SAID OTHER PORTIONS HAVING FINGERS EXTENDING INTO SAID SPACES WITH HOOKS ON THE INNER ENDS OF SAID FINGERS EXTENDING INTO SAID SLOTS IN SAID TABS, INSULATORS ATTACHED TO SAID SHEETS, AND MEANS EXTENDING BETWEEN SAID INSULATORS FOR SUPPORTING SAID OTHER PLATES FROM SAID INSULATORS.