rner, D, passes down theopposite side of the castingthrough the channel previouslymentioned, and finally reachesthe branch pipe, G, in a gaseousform. The vaporized gasolineescaping through the minuteopening controlled by the needle- valve is mingled with air entering by way of the per-forations of… … duces the possibility of the lamps getting out of order,and also permits the various parts to be readilycleaned. Used in conjunction with Welsbach gasolinemantles, these burners give a light equal to that of100 candles at a cost of less than one-fifth cent per hour. In other words,for one cent a…
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