Safe edge retracation mechanism

Claim 1

IN AN ELEVATOR, THE COMBINATION COMPRISING A CAR HAVING AN OPENING ADAPTED TO BE CLOSED BY A RECTILINEARLY MOVABLE POWER ACTUATED DOOR HAVING A FRONT MARGIN AND A SAFE EDGE COEXTENSIVE WITH SAID FRON MARGIN, A LINK JOINING SAID SAFE EDGE WITH SAID DOOR, A PIVOT BETWEEN SAID LINK AND SAID DOOR, A SAFE EDGE RETRACTION SPIDER SPACED AWAY FROM SAID LINK AND POSITIONED ALONG SAID FRONT MARGIN OF SAID DOOR FOR ROTATION ABOUT AN AXIS PARALLEL TO THAT OF SAID PIVOT, A FIRST LEG OF SAID RETRACTION SPIDER PIVOTALLY CONNECTED TO SAID SAFE EDGE, A SECOND LEG OF SAID SPIDER CARRYING AN ABUTMENT MEMBER, A DRIVER BRACKET HAVING A DRIVEN ARM AND A DRIVING ARM ROTATABLY MOUNTED ON SAID SPIDER, SAID DRIVING ARM HAVING AP ROJECTION FOR ENGAGEMENT WITH THE ABUTMENT MEMBER OF SAID SPIDER, DRIVING MEANS INCLUDING A CABLE HAVING AFIXED ENDS AND A BIGHT CARRIED BY AND TRANSVERSELY MOVABLE WITH SAID DOOR, SELECTIVELY POSITIONED ABUTMENT MEANS CARRIED BY SAID BIGHT ENGAGEABLE WITH SAID DRIVEN ARM OF SAID ROTATABLY MOUNTED DRIVER BRACKET PRIOR TO SAID DOOR ASSUMING AT LEAST ONE OF ITS TERMINAL POSITIONS WHEREBY SAID FIRST LEG OF SAID SAFE EDGE RETRACTION SPIDER IS PIVOTED IN A DIRECTION TO RETRACT SAID SAFE EDGE.