Adjustable storage rack

Claim 1

AN ADJUSTABLE RACK COMPRISING AT LEAST TWO SPACED APART, GENERALLY RECTANGULAR, UPRIGHT FRAMES INCLUDING END UPRIGHTS, MEANS FOR FASTENING SAID FRAMES RIGIDLY TO EACH OTHER IN A GENERALLY PARALLEL OPPOSED RELATIONSHIP AND ADJUSTABLE MEANS, POSITIONED BETWEEN THE END UPRIGHTS ON AT LEAST ONE OF SAID FRAMES FOR TRANSMITTING THE LOAD OF THE TOP CROSS RAIL AND OF INTERMEDIATE SHELVES TO THE BOTTOM ACROSS RAIL OF SAID FRAME, COMPRISING AN INTERMEDIATE UPRIGHT EXTENDING VERTICALLY BETWEEN THE SAID CROSS RAILS AND HAVING A SHOULDER AT EACH END, WHICH SHOULDERS, RESPECTIVELY, ENGAGE THE OPPOSED FACES OF SAID CROSS RAILS; AND MEANS FOR REMOVABLY SECURING SAID UPRIGHT IN THE SAID VERTICALLY EXTENDING POSITION AT A PLURALITY OF POSITIONS SPACED AT PREDETERMINED DISTANCES FROM THE SAID END UPRIGHTS WHICH COMPRISES TANGS EXTENDING OUTWARDLY FROM THE ENDS OF THE UPRIGHT IN A DIRECTION LENGTHWISE THEREOF AND SLOTS IN EACH OF THE CROSS RAILS AT THE SAID PREDETERMINED DISTANCES FROM THE END UPRIGHTS FOR RECEIVING SAID TANGS.