Compton, Alfred G. (Alfred George), 1835-1913 · New York : J. Wiley & Sons · leaf 104
ll it, drop each into cold water. Test them, as to hardness, in the following way: Clamp the piece in a hand-vise, as in Fig. 54, let- ting it project about at the side of Exercise 31. the vise. Fasten the hand-vise to a Experiment on hardening piece of wood four or five feet long steel. and wide,… … Fig. 55. end of the piece of steel rest on the grindstone Hang a weight of 8 or 10 lbs. on the strip, to pro- duce a suitable pressure on the stone, making a notch for the cord so that it shall be attached at the same place in all the experiments. Let the
Metal-work
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
