Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 26
absorb so much of the metal, and for this reason they are Fig. 4. to be preferred for melting valuable f] metals. When about to use a crucible, it should be heated gradually by put- ting it in the furnace when the fire is started, or by setting it on the top of the tyle or covering of the furnace,… … crucible should be allowed to settle with the fuel, as the heat will then be r, bridge ; (f, melting furnace ; e, fire- more concentrated upon it. After the door ; f, flue leading to stack ; </, door metal has been poured from the crucible for feeding in and ladling out metal. into the mould or…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
