This section is from the "A Complete Dictionary of Dry Goods" book, by George S. Cole. Also available from Amazon: A complete dictionary of dry goods and history of silk, cotton, linen, wool and other fibrous substances,: Including a full explanation of the modern processes ... together with various useful tables.
Hat-Block. The block or mold on which a hat is shaped. It consists several pieces of wood or metal fastened together, preserving the general outline of the crown of a hat.