US Patent No. 3,083, granted May 12, 1843 to John W. Gill of Mount Pleasant, Ohio, for a feeding tent and ventilating cradle used in raising silkworms. The specification describes a large canvas tent with roll-up sides and rocking, rack-sided cradles fitted with troughs, slats for mulberry branches, a pendulum-driven fan, and a fender against mice. A perspective patent drawing with lettered parts accompanies the text.