
61
B
Butylene
Burner Tip: The point at which natural gas is used as a fuel.
Burning Oil: Kerosene, mineral seal, or other light petroleum oils of such
gravity and other properties that can be used for illuminating and similar
purposes.
Burning Point: The lowest temperature at which a volatile oil in an open
vessel will continue to burn when ignited by a ame held close to its surface.
It determines the degree of safety with which kerosene and other illuminat-
ing oils can be used.
Burning Shoe: Usually a at bottom mill.
Burn Over: To mill a piece of equipment (and often to catch it with an
overshot).
Burr: A raised metal lip, for examp ...