Automatic tank selector

Claim 1

AN AUTOMATIC TANK SELECTOR COMPRISING A COMPACT DISTRIBUTOR VALVE ASSEMBLY INCLUDING A CYLINDRICAL HOUSING HAVING A PLURALITY OF RADIALLY DISPOSED OUTLET PORTS AROUND A CENTRAL INLET PORT, A FACE PLATE FOR CONTAINING SAID OUTLET PORTS WITH THE TERMINATION OF ALL THEREOF IN A COMMON PLANE, SAID PLANE LYING SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF SAID INLET PORT, SAID OUTLET PORTS BEING DISPOSED ON THE SAME SIDE OF SAID HOUSING AS SAID INLET PORT, A FLUID DISTRIBUTING ROTOR ELEMENT HAVING A CYLINDRICAL CONFIGURATION AND HAVING AN INLET AND AN OUTLET THEREIN AND BEING ADAPTED FOR ROTATION WITHIN THE HOUSING, SAID HOUSING INLET PORT AND SAID INLET OF SAID DISTRIBUTING ELEMENT BEING ALIGNED FOR FLUID PASSAGE THERETHROUGH, SAID OUTLET OF SAID DISTRIBUTING ELEMENT BEING ADAPTED TO BE SEQUENTIALLY ALIGNED WITH EACH OF SAID OUTLET PORTS, WEAR COMPENSATING STRUCTURE AT THE OUTLET OF SAID FLUID DISTRIBUTING ELEMENT INCLUDING A HOLLOW PISTON LONGITUDINALLY SLIDABLE WITHIN A CYLINDER CARRIED BY SAID DISTRIBUTING ELEMENT, MEANS FOR URGING SAID PISTON INTO CONTACT WITH SAID FACE PLATE, A DRIVE SHAFT INTEGRALLY ATTACHED ALONG THE AXIS OF SAID DISTRIBUTING ELEMENT AND EXTENDING OUTWARDS FROM THE OTHER SIDE OF SAID HOUSING RELATIVE TO SAID INLET AND OUTLET PORTS, A PLURALITY OF PROTRACTILE MEMBERS RADIALLY MOUNTED AROUND SAID DRIVE SHAFT, A ROTARY STOP ELEMENT SECURED TO SAID DRIVE SHAFT AND SEQUENTIALLY ENGAGEABLE WITH SAID PROTACTILE MEMBERS WHEN IN THE PROTRACTED POSITION WHEREBY THE ROTATION OF SAID DISTRIBUTING ELEMENT IS CAUSED TO STOP WHEN SAID STOP ELEMENT ENGAGES ONE OF SAID PROTRACTILE MEMBERS, AND A MOTOR FOR DRIVING SAID DRIVE SHAFT.