Rack type dough proofer

Claim 1

IN AN ARTICLE HANDLING APPARATUS, A PLURALITY OF ARTICLE CARRIERS, MEANS FOR CONDUCTING A SUCCESSION OF CARRRIERS IN A CLOSED LOOP INCLUDING CARRIER ELEVATING MEANS, MEANS FOR CONTINUOUSLY OPERATING SAID CARRIER ELEVATING MEANS, AN ARTICLE RECEIVING SUPPORT DISPOSED IN FRONT OF SAID CARRIER ELEVATING MEANS, AN UNLOADING PUSHER INCLUDING A FRAME HAVING A TRANSVERSELY EXTENDING FRONT PUSHER BAR NORMALLY DISPOSED REARWARDLY ADJACENT THE PATH OF A CARRIER ON SAID ELEVATING MEANS, LONGITUDINALLY SPACED REAR AND FRONT GUIDE SUPPORTS SUPPORTING SAID FRAME FOR RECIPROCATORY TRAVEL, OPERATING MEANS IMPARTING RECIPROCATORY MOVEMENT TO SAID UNLOADING PUSHER IN AN EXTENDING STROKE ACROSS THE PATH OF SAID CARRIER ELEVATING MEANS FOR PUSHING ARTICLES FROM A CARRIER ONTO SAID ARTICLE RECEIVING SUPPORT AND IN A RETRACTING STROKE OUT OF THE PATH OF SAID CARRIER ELEVATING MEANS, SAID REAR GUIDE SUPPORT BEING FIXED AGAINST VERTICAL MOVEMENT, MEANS MOUNTING SAID FRONT GUIDE SUPPORT FOR VERTICAL MOVEMENT INCLUDING MEANS LIMITING DOWNWARD MOVEMENT THEREOF TO NORMALLY SUPPORT SAID PUSHER FRAME IN FORWARDLY AND DOWNWARDLY SLOPING POSITION IN ITS RETRACTED POSITION, AND CONTROL MEANS OPERATED IN TIMED RELATION WITH SAID ELEVATING MEANS FOR ACTIVATING SAID OPERATING MEANS TO INITIATE RECIPROCATORY MOVEMENT OF SAID UNLOADING PUSHER WHEN A CARRIER IS SUBJACENT SAID FRONT PUSHER BAR IN SAID NORMALLY FORWARDLY AND DOWNWARDLY SLOPING POSITION OF SAID PUSHER FRAME, SAID PUSHER FRAME PIVOTING UPWARDLY ABOUT SAID REAR GUIDE SUPPORT AS A FULCRUM AS SAID FRONT PUSHER BAR IS RAISED BY SAID CONTINUOUSLY UPWARDLY MOVING CARRIER DURING RECIPROCATORY TRAVEL OF SAID FRONT PUSHER BAR ACROSS SAID UPWARDLY MOVING CARRIER.