Scarificator, 12 blades, 19th century. Octagonal brass scarificator with blades arranged on two rods which cut in opposite directions. This is a standard English-American 19th c. scarificator. As is true of all scarificators, the blades and cocking lever are made of ferrous metal (iron or steel). Two small stars on one side indicate how the top and bottom of the scarificator fit together. Purchased 1898. L 46 mm, W 42 mm, H 30 mm. Anthropology vol. 30, catalog no. 143080. Scarificator with case, 12 blades, 19th century. Standard scarificator with blades cutting in opposite directions. Case is wood covered with red leather, lined in purple plush and closed by a latch. On top of the case is an American eagle. Donated by Dr. D. H. Welling 1925. Scarificator: L 52 mm, W 46 mm, H 36 mm. Case: L 61 mm, W 56 mm, H 77 mm. NMHT 86124 (M-2087). NOTE: American eagles of this type were imprinted on many objects at the time of the Centennial (1876). Scarificator, 12 blades, patent model, 1846. Patented by George Tiemann of New York (U.S. patent 4705). Engraved "Geo. Tieman[_sic_]/No. 63 Chatham Street/New York/March 1846." The novel feature of the scarificator was the addition of an ebony handle in which a coiled spring was contained. See NMHT 254866 (M-10700), which is the same instrument as marketed by George Tiemann & Co. Transferred from the U.S. Patent Office 1926. Overall L 176 mm. Base: L 42 mm, W 42 mm, H 18 mm. Neg. 76-9115 (BW). NMHT 89797 (M-4289). (Figure 76.) Scarificator, 13 blades, patent model, 1847. Patented by Frederick M. Leypoldt of Philadelphia (U.S. Patent 5111). Scarificator is brass, octagonal with three rods containing 4, 5, and 4 blades respectively. Blades turn in same direction. The innovation consisted of a new arrangement of the cocking lever and spring. Engraved "F. Leypoldt/Philada." Transferred from the U.S. Patent Office 1926. L 44 mm, W 44 mm, H 40 mm. Neg. 73-4213 (BW & CS). NMHT 89797 (M-4290). (Figure 77.) Scarificator, 10 blades, patent model, 1851. Patented by Frederick Leypoldt of Philadelphia (U.S. patent 8095). This is a flattened model of scarificator made of a copper-zinc-nickel alloy known as "nickel-silver," or German silver. The innovation in this patent model was a flat lever extending from the side instead of the top, which fits into slots in two racks which move back and forth and turn the pinions of the blade rods. Blades cut in opposite directions. Transferred from the U.S. Patent Office 1926. L 42 mm, W 40 mm, H 16 mm. Neg. 76-9112 (BW). NMHT 89797 (M-4293). (Figure 78.) Scarificator, 12 blades, 19th century. Octagonal scarificator in which blades cut in the same direction. Donated by Dr. George B. Roth 1928. L 44 mm, W 40 mm, H 38 mm. Neg. 76-7744 (BW, CS). NMHT 99749 (M-2336). (Figure 106.) Scarificator, 12 blades, late 19th century. Octagonal scarificator; blades cut in opposite directions. Used by the donor's father. Donated by Aida Doyle 1932. L 48 mm, W 42 mm, H 34 mm. NMHT 118000 (M-3182).