Blowpipe

Webster's Dictionary

(1): (n.) A tube for directing a jet of air into a fire or into the flame of a lamp or candle, so as to concentrate the heat on some object.

(2): (n.) A blowgun; a blowtube.

The Nuttall Encyclopedia

A contrivance by which a current of air is driven through a flame, and the flame directed upon some fusible substance to fuse or vitrify it.