Four flap opener for cases

Claim 1

IN A COVER FLAP OPENING MECHANISM FOR TOP-OPENING CASES HAVING COVER FLAPS HINGED TO SWING REARWARDLY, THE COMBINATION OF A FLAP RAISING STATION, A CONVEYOR HAVING SPACED PUSHERS FOR ADVANCING INDIVIDUAL CASES IN SPACED RELATION TO AND BEYOND THE FLAP RAISING STATION WITH THE FLAP HINGE LINES ARRANGED TRANSVERSELY OF THE CONVEYOR TRAVEL AND ON THE TRAILING SIDES OF THE CASES, MEANS FOR DRIVING THE CONVEYOR, MEANS FOR STOPPING THE INDIVIDUAL CASES IN POSITION AT SAID STATION, AUXILIARY CONVEYING MEANS FOR ADVANCING EACH CASE AHEAD OF ITS PUSHER AS THE CASE APPROACHES SAID STATION UNTIL BROUGHT TO A STOP BY SAID STOP MEANS AT THE STATION, A FLAP RAISING MECHANISM AT SAID STATION, MEANS TIMED WITH THE PUSHER TRAVEL FOR ACTUATING THE FLAP RAISING MECHANISM WHILE THE CASE IS AT SAID STATION TO RAISE THE CASE FLAP AND HOLD IT INCLINED AT A SMALL ANGLE, A FLAP SWINGING MEMBER DISPOSED AT A LEVEL ABOVE THE CASE AT AID STATION BUT WITHIN THE PATH OF THE CASE FLAP WHEN RAISED, SAID MEMBER EXTENDING TRANSVERSELY OF THE DIRECTION OF CONVEYOR TRAVEL TO SUPPORT THE FLAP IN RAISED POSITION WHEN THE CASE, WITH RAISED FLAP, IS ADVANCED, THE PUSHER IN ORIGINAL CONTACT WITH THE CASE SERVING TO PROPEL THE CASE AWAY FROM SAID STATION, SAID FLAP SWINGING MEMBER ACTING, UPON ADVANCING MOVEMENT OF THE CASE, TO SWING THE FLAP OVER TO A REARWARDLY EXTENDED POSITION.