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Claim 1

IN APPARATUS HAVING A FRAME AND A CONVEYING SURFACE THEREON DEFINING A CONVEYING PATH ON SAID FRAME FOR THE MOVEMENT OF A LOAD ALONG SAID FRAME, AN IMPROVED RELEASABLE STOP MEANS FOR POSITIONING A LOAD IN SAID CONVEYING PATH WHICH COMPRISES SUPPORT MEANS MOUNTED ON SAID FRAME ADJACENT TO SAID PATH FOR MOVEMENT WITH RESPECT TO SAID PATH IN A PREDETERMINED DIRECTION FROM A FIRST POSITION TO A SECOND POSITION, LATCH MEANS INTERCONNECTING SAID SUPPORT MEANS AND SAID FRAME LATCHING SAID SUPPORT MEANS IN SAID FIRST POSITION WITH SAID LATCH MEANS HAVING SELECTIVELY OPERABLE LATCH RELEASE MEANS PERMITTING SAID SUPPORT MEANS TO BE MOVED TO SAID SECOND POSITION, A STOP MEMBER PIVOTALLY MOUNTED ON SAID SUPPORT MEANS FOR PIVOTAL MOVEMENT IN A SECOND DIRECTION WHEN SAID SUPPORT MEANS IS IN SAID FIRST POSITION FROM A PROTRUDING POSITION IN SAID PATH TO A WITHDRAWN POSITION OUT OF SAID PATH WITH SAID SECOND DIRECTION INCLINED TO SAID FIRST DIRECTION BY AN ANGLE OF AT LEAST NINETY DEGREES, AND RESILIENT MEANS CONNECTED TO SAID STOP MEMBER FOR RESILIENTLY SUPPORTING SAID STOP MEMBER IN SAID PROTRUDING POSITION WHILE PERMITTING RESILIENT MOVEMENT OF SAID STOP MEMBER TO SAID WITHDRAWN POSITION WHEREBY SAID STOP MEMBER IS WITHDRAWN FROM SAID PATH IN OPPOSITION TO SAID RESILIENT MEANS BY MOVEMENT OF A LOAD IN ONE DIRECTION ALONG SAID PATH WHILE RELEASABLY LATCHING A LOAD AGAINST MOVEMENT IN THE OPPOSITE DIRECTION ALONG SAID PATH.