Readjustment device for coke oven batteries

A device for moving two linkages in opposite directions, each linkage being adapted for connection to its own set of shutoff circuit members of individual coke ovens of a coke oven battery, the device comprising two linkages, a guide pulley assembly having an axis and two pulley segments which are connected to each other, said pulley segments being mounted to each other for common rotation around said axis, each pulley segment including a curved arc portion having a radius from said axis which is different from the radius of the curved arc portion of the other pulley segment, each arc portion having a circumferential fastening point, support means mounting said guide pulley assembly for rotation of said pulley segments around said axis, two flexible connecting members, each flexible connecting member having one end connected to one of said fastening points and an opposite end, each flexible connecting member being engagable against and trained around said curved arc portion of its pulley segment in opposite directions around said axis with said opposite ends of said connecting members being movable by different amounts and in opposite directions with rotation of said pulley segments due to the difference in radii of said curved arc portions, one of the linkages being connected to said opposite end of one flexible connecting member and the other of the linkages being connected to said opposite end of the other flexible connecting member so that rotation of said pulley segment around said axis caused the linkages to move in opposite directions and by different stroke lengths.