US patent of October 6, 1835, granted to Jamaliel Gay of Poughkeepsie, New York. It describes a revolving apron placed under hurdles (rearing trays) for silk worms, to catch and remove the litter that falls through the cane or twine bottoms. The specification covers single-hurdle and multi-tier arrangements using rollers, a crank and an endless or wound apron. A drawing sheet with reference letters accompanies the text.