Dishwasher construction

Claim 1

A DISHWASHER COMPRISING, IN COMBINATION, STRUCTURE PROVIDING REAR, SIDE, AND FRONT WALLS DEFINING A SUBSTANTIALLY RECTANGULAR OPEN-TOPPED TUB FOR RECEIPT OF ARTICLES TO BE WASHED, SAID FRONT WALL TERMINATING A SUBSTANTIAL DISTANCE BELOW SAID SIDE WALLS, A COVER FOR SAID TUB, FLANGE MEANS EXTENDING DOWNWARDLY FROM THE FRONT EDGE OF SAID COVER TO PROVIDE A CONTINUATION OF SAID FRONT WALL TO COMPLETE THE ENCLOSURE, MEANS FOR HINGING SAID COVER TO THE REAR OF SAID TUB, MEANS IN THE BOTTOM OF SAID TUB FOR DISTRIBUTING WASHING LIQUID UPWARDLY THROUGHOUT SAID TUB AND OUTWARDLY TOWARD THE SIDE WALLS THEREOF TO EFFECT A THROUGH WASHING OPERATION, SLIDE-RAIL MEANS EXTENDING HORIZONTALLY REARWARDLY ALONG THE RESPECTIVE SIDE WALLS OF SAID TUB AT A LEVEL IMMEDIATELY ABOVE THE TOP OF SAID FRONT WALL, A DISHRACK IN THE LOWER PORTION OF SAID TUB, AN UPPER DISHRACK MOUNTED ON SAID SLIDERAIL MEANS FOR WITHDRAWAL SUBSTANTIALLY COMPLETELY FROM SAID TUB, SAID UPPER DISHRACK HAVING AN OPENWORK BOTTOM FOR PASSAGE OF WASHING LIQUID THERETHROUGH, A DRIP TRAY CARRIED BY SAID UPPER RACK TO PROVIDE A DRIP-CATCHING BOTTOM THEREFOR UPON MOVEMENT THEREOF OUTWARDLY OF SAID TUB, SAID TRAY COMPRISING A PLURALITY OF MEMBERS EXTENDING TRANSVERSELY OF SAID DISHRACK FOR SUBSTANTIALLY THE FULL WIDTH THEREOF, MEANS FOR HINGING EACH OF SAID MEMBERS ONE TO THE OTHER TO ARTICULATE SAID MEMBERS INTO A FLEXIBLE STRUCTURE, MEANS FOR SECURING THE FOREMOST OF SAID MEMBERS TO THE LOWER FRONT PORTION OF SAID UPPER RACK FOR MOVEMENT THEREWITH, MEANS FOR GUIDING SAID DRIP TRAY OUT OF SAID TUB AS SAID UPPER RACK IS WITHDRAWN FROM SAID TUB, MEANS FOR STIFFENING SAID ARTICULATED MEMBERS IN THE WITHDRAWN CONDITION WHEREBY SAID TRAY PROVIDES A LIQUID RETENTIVE SURFACE FOR