Retractable conveyor rollers

Claim 1

RETRACTABLE CONVEYOR ROLLERS OF THE CHARACTER DESCRIBED, COMPRISING A RECTANGULAR FRAME EMBODYING TWO SPACED AND PARALLEL SIDE PLATES THAT ARE CONNECTED TOGETHER BY A PLURALITY OF SUBSTANTIALLY Z-SHAPED MEMBERS, EACH MEMBER OF WHICH EMBODIES A HORIZONTALLY DISPOSED TOP PLATE A VERTICAL MEMBER, AND AN ANGULARLY DISPOSED MEMBER ON THE TOP OF WHICH IS SECURED A PLATE, AND THE LOWER PORTION OF THE SAID ANGULARLY DISPOSED MEMBER TERMINATING IN A HORIZONTALLY DISPOSED BOTTOM CROSS MEMBER, THE ANGULARLY DISPOSED MEMBERS BEING SUBSTANTIALLY PARALLEL, THE SAID HORIZONTALLY DISPOSED TOP PLATE AND THE SAID HORIZONTALLY DISPOSED BOTTOM CROSS MEMBER BEING THE ONLY PART OF THE SAID Z-SHAPED MEMBERS THAT ARE SECRUED TO THE SAID PARALLEL SIDE PLATES AS THE SAID ANGULARLY DISPOSED MEMBER AND THE SAID VERTICAL MEMBER ARE CUT AWAY FROM THE INSIDE OF THE SAID PARALLEL SIDE PLATES, AN ELONGATED DRAWBAR SLIDABLY MOUNTED AGAINST THE INNER SURFACE OF EACH SIDE PLATE, AN AXLE FOR EACH Z-SHAPED MEMBER, SAID AXLES SPACED THE SAME AS THE Z-SHAPED MEMBERS AND SECURED AT THEIR ENDS TO THE DRAWBARS, CONVEYOR ROLLERS ROTATABLY SECURED TO SAID AXLES, SPACED MEMBERS SECURED TO EACH AXLE, WHICH MEMBERS ARE NORMALLY IN A FIRST POSITION RESTING ON THE HORIZONTALLY DISPOSED BOTTOM CROSS MEMBERS AND CAN RIDE UP ON THE CORRESPONDING ANGULARLY DISPOSED MEMBER TO A SECOND POSITION IN WHICH THE UPPER PORTIONS OF SAID ROLLERS ARE ABOVE THE UPPER SURFACES OF SAID MEMBERS AND MEANS TO SHIFT SAID MEMBERS TO EITHER SAID FIRST POSITION OR SAID SECOND POSITION AS DESIRED.