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 221
front tooth into a slanting notch upon the upper edge of r, spontaneously by the action of the spring, e; whereby the open- ing, e, is shut. The small door, n, rises again with the front arm of the lever by the operation of the weight q of itself, as soon as the catch is released by pressure upon… … being used, by piling it in logs upon the iron bars, 9, 10, 11. under the mantelpiece, as shown mfigs. 114, 115.
Industrial arts · Technology
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
