Fig. 12.
Fig. 13 is a simple lighting attachment for an Argand burner. The moving lever which carries the pull has a German silver spiral spring on its top end. This strikes against the lug projecting from the circuit-wire arm and makes a spark. The lower part of the circuit-wire arm has a screw and washers for ready attachment, and is strongly and substantially made.
Fig. 13.
A means of igniting the gas from a Welsbach burner is shown in Fig. 14, and is so simple as to need no further explanation.
Acetylene Burners.
Owing to the deposits of carbon, it is necessary to construct burners for acetylene gas in a different and more substantial manner than those designed for coal gas.
