Scraper for rotary, multiple disc filters

Claim 1

A SCRAPER ASSEMBLY FOR DISC FILTERS WHEREIN A SCRAPER BLADE IS MOUNTED ON EACH SIDE OF A DISC FOR REMOVAL OF CAKE FROM SAID DISC, COMPRISING PIVOTAL SUPPORTS MOUNTED ON BOTH SIDES OF A FILTER DISC, EACH SAID SUPPORT BEING RESILIENTLY MOUNTED AT ITS INNER END FOR LIMITED MOVEMENT, A BLADE SECURED TO EACH SAID SUPPORT, AN OUTER BLADE SUPPORT INCLUDING A RECIPROCAL SUPPORT MEMBER HAVING A BASE PORTION DISPOSED ON A SUPPORT SURFACE OF THE FILTER ADJACENT THE OUTER PERIPHERAL EDGE OF SAID DISC AND AN UPRIGHT PORTION DISPOSED BETWEEN THE ENDS OF THE BASE PORTION, GUIDE MEANS MOUNTED ON SAID UPRIGHT PORTION AND ON BOTH SIDES OF SAID DISC SO AS TO MAINTAIN SAID SUPPORT CENTERED ON SAID DISC, SAID BLADE SUPPORT INCLUDING A LEVER ARM SECURED TO THE OUTER END OF EACH SAID BLADE, SAID LEVER ARM HAVING A LATERAL SURFACE PORTION AND A PORTION EXTENDING DOWNWARDLY AND INWARDLY FROM ITS ASSOCIATED BLADE TOWARD THE DISC AND BEING PIVOTALLY SECURED TO SAID BASE PORTION AT ITS LOWER END BELOW THE REMOVAL POINT OF THE CAKE FROM THE DISC BY THE BLADE AND A SPRING MOUNTED BETWEEN EACH SAID LATERAL PORTION OF EACH OF SAID LEVER ARM AND SAID BASE PORTION SO AS TO INDEPENDENTLY BIAS SAID BLADE UNDER SPRING PRESSURE DIRECTED TOWARD SAID DISC, THE LEVER ARMS BEING CROSSED AT THEIR LOWER ENDS AND EACH LEVER ARM BEING PIVOTED AT A POINT BELOW THE REMOVAL POINT OF THE CAKE FROM THE DISC ON THE OPPOSITE SIDE OF THE DISC AN SPACED SUBSTANTIALLY THEREFROM.