The total number of claims filed with the General Motors Co. ignition switch compensation fund climbed to 4,180 as potential victims rushed to submit their paper work before the deadline, the Wall Street Journal reported today. Fund administrator Camille Biros, working alongside Kenneth Feinberg to determine payout eligibility, said that the total will increase somewhat since some people may have mailed their claims rather than submit them electronically. All claims had to be postmarked by midnight Jan. 31.