Rotating cluster type rocket launcher

Claim 1

IN AN AUTOMATIC GUN FOR DISCHARGING COMPLETE ROUNDS LINKED TOGETHER TO FORM A BELT, THE COMBINATION INCLUDING A RECEIVER, A CLUSTER COMPOSED OF A PLURALITY OF FIRING TUBES SPACED EQUALLY APART AROUND A CENTRAL AXIS AND A DRUM ASSEMBLY FOR SUPPORTING THE BREECH ENDS OF SAID FIRING TUBES, SAID DRUM ASSEMBLY BEING JOURNALED IN SAID RECEIVER FOR ROTATION AROUND THE CENTRAL AXIS TO PASS SAID FIRING TUBES SUCCESSIVELY THROUGH A BATTERY STATION, A FEEDSAID CLUSTER FOR ROTATION THEREWITH FOR MOVING THE BELT THROUGH SAID RECEIVER AND POSITIONING SUCCESSIVE ONES OF THE ROUNDS RELATIVE TO SUCCESSIVE ONES OF SAID FIRING TUBES SO AS TO BE IN AXIAL ALIGNMENT THEREWITH DURING PASSAGE THROUGH THE BATTERY STATION, A MOTOR INCLUDING A PLURALITY OF CYLINDERS EQUAL TO THE NUMBER OF SAID FIRING TUBES, SAID CYLINDERS EQUAL TO THE NUMBER OF SAID FIRING TUBES, AND THE AXES ARE PARALLEL TO THE CENTRAL AXIS OF SAID CLUSTER A PORT EXTENDING FROM EACH OF SAID FIRING TUBES TO A CORRESPONDING ONE OF SAID CYLINDERS FOR PASSAGE OF DISCHARGE GASES THEREINTO, A PISTON SLIDINGLY DISPOSED IN EACH OF SAID CYLINDERS FOR DISPLACEMENT BY THE DISCHARGE GASES, A ROD EXTENDING COAXIALLY FROM EACH OF SAID PISTONS, A CAM FOLLOWER FIXED TO THE FREE END OF EACH OF SAID PISTONS, A A CYLINDRICAL INSERT FIXED TO SAID RECEIVER AT THE FRONT END, A CAM GROOVE FORMED INSIDE OF SAID INSERT SO AS TO SLIDINGLY