Recent improvements in arts, manufactures, and mines : being a supplement to his Dictionary (1844)
Ure, Andrew, 1778-1857, Ure, Andrew, 1778-1857. Dictionary of arts, manufactures, and mines · London : Printed for Longman, Brown, Green, and Longmans · leaf 279
glutinating portions of the shell by heat. When the shell has become soft by dipping it in hot water, the edges are in the cleanest possible state, without grease, pressed together with hot flat tongs, and then plunged into cold water, to fix them in their position. The teeth of the larger combs… … 168 1 ^tpj r 169 173 IlSlfil 170 I il length of the teeth, as in Jig. 167. The shell is then flattened, the points are separated with a narrow chisel or pricker, and the two combs are finished, while flat, with coarse single-cut files and triangular scrapers. They are finally warmed, and bent on…
Industrial arts · Technology
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
