Today’s (March 4) Washington Post reports on the people who turned out for a casting call for the PBS show “Everyday Edisons“. The first show in the series will air on April 28. Inventors mentioned include Frampton Ellis III (naturally contoured shoe), Daniel Davala (butter knife) and Matt Fleming (tabletop game). This month one hundred years ago, Thomas Edison received a patent on an electrical welding machine (847,746).