US Patent No. 399,937, granted March 19, 1889 to Edward William Serrell Jr., for a machine that automatically fills cocoon-holders (magazines) when reeling silk from the cocoon. Cocoons float in a charging basin with a circulating water current into a rotating pocketed magazine, which then ejects them one at a time into the reeling basin near the lance-bout finger. The document has three sheets of drawings (Figs. 1-8), a specification describing the locking, rotating and ejecting mechanisms, and five claims.