Mounting for sliding panels for doorways and the like

Claim 1

IN COMBINATION: A SLIDING FRAME STRUCTURE TO BE SUPPORTED IN A VERTICAL POSITION; A HORIZONTALLY POSITIONED BOTTOM FRAME MEMBER HAVING A VERTICALLY DISPOSED CHANNEL EXTENDING LONGITUDINALLY OF SUCH MEMBER AND PROVIDING A DOWNWARDLY DIRECTED OPENING; A WHEEL MOUNTED IN SAID CHANNEL AT SAID OPENING TO CARRY WEIGHT OF SAID FRAME STRUCTURE AND PROVIDED WITH MEANS TO ENGAGE AND RUN UPON A TRACK FOR SUPPORTING SAID FRAME STRUCTURE; MOUNTING MEANS IN WHICH SAID WHEEL IS ROTATABLY MOUNTED; A SPRING CONNECTED WITH SAID FRAME MEMBER FOR YIELDINGLY POSITIONING SAID MOUNTING MEANS AND ITS WHEEL IN SAID CHANNEL AND TO URGE SAID WHEEL DOWNWARDLY IN SAID CHANNEL AND SAID OPENING; AND ADJUSTABLE STOP MEANS INTERENGAGING BETWEEN SAID FRAME MEMBER AND SAID WHEEL MOUNTING MEANS FOR ADJUSTING THE OPERATING POSITION OF SAID WHEEL RELATIVE TO SAID FRAME MEMBER AND SAID CHANNEL, SAID ADJUSTABLE STOP MEANS BEING A SCREW THREADED INTO A PORTION OF SAID FRAME MEMBER ABOVE SAID CHANNEL, AND SAID SPRING BEING A LEAF SPRING CONNECTAED AT ONE END TO SAID FRAME MEMBER AND AT THE OTHER END TO SAID WHEEL MOUNTING MEANS OPPOSITE SAID ADJUSTING SCREW.