US Patent No. 1,347, granted September 28, 1839 to Solomon M. Jenkins of Easton, Maryland, for a 'cocoon lodgment', an apparatus placed over the feeding hurdles in a silkworm cocoonery so the worms can spin their cocoons in an orderly way. It consists of two wooden frames, a slatted and twine-crossed grating, and rows of descending wooden pins that serve as ladders for the worms, with an opaque covering to exclude light. The document has a drawing sheet and the specification with two claims.