Chromatographic system

Claim 1

IN A CHROMATOGRAPHIC SYSTEM OF THE CHARACTER DESCRIBED, SENSING UNIT MEANS INCLUDING MEANS TO PRODUCE A VARYING SIGNAL IN ACCORDANCE WITH THE COMPONENTS OF A SAMPLED FLUID, RECORDER MEANS, PROGRAMMER MEANS TO APPLY SAID SIGNAL TO THE RECORDER MEANS, SAID PROGRAMMER MEANS INCLUDING A PLURALITY OF ELECTRICAL PATHS, EACH PATH INCLUDING ADJUSTABLE POTENTIOMETER MEANS WHEREBY THE SIGNAL THROUGH EACH PATH MAY BE SEPARATELY ADJUSTED, MAGNETIC SWITCH MEANS, MEANS TO SEQUENTIALLY CLOSE SAID SWITCH MEANS TO SEQUENTIALLY COMPLETE SAID ELECTRICAL PATHS TO THE RECORDER MEANS, SAID SWITCH CLOSING MEANS INCLUDING A ROTATING SHAFT, A PLURALITY OF PIVOTALLY MOUNTED ACTUATING ARMS LOCATED ADJACENT SAID SHAFT AT DIFFERENT RADIAL DISTANCES THEREFROM, A CIRCULAR INCLINED RAMP FIXED IN POSITION CONCENTRIC WITH SAID SHAFT, EACH OF SAID ARMS BEING SPRING URGED TOWARD SAID RAMP AND HAVING A HOOKED PORTION EXTENDING THERETHROUGH, A PLURALITY OF CIRCULAR CONCENTRIC LEAF SPRINGS LOCATED ADJACENT SAID RAMP ON THE OPPOSITE SIDE FROM SAID ARMS, EACH LEAF SPRING HAVING A RADIAL ARM AND A CIRCULAR PORTION OF A RADIUS EQUAL TO THE RADIAL DISTANCE FROM THE SHAFT OF A RESPECTIVE ACTUATING ARM, A TIMING DIAL SECURED TO SAID SHAFT AND ADAPTED TO ROTATE THEREWITH, MEANS LOCATED AT THE END OF EACH LEAF SPRING RADIAL ARM TO SECURE THE LEAF SPRING TO SAID TIMING DIAL WHEREBY THE RELATIVE ANGULAR POSITIONS OF THE CIRCULAR LEAF SPRINGS ARE ADJUSTABLE, SAID LEAF SPRINGS BEING COMPRESSED DURING ROTATION THEREOF BY SAID RAMP AND ADAPTED TO STRIKE THE HOOKED PORTIONS OF RESPECTIVE ACTUATING ARMS TO SEQUENTIALLY CLOSE SAID MAGNETIC SWITCH MEANS.