. Light and lighting. in the direction of the ithe Wotan Traction type, and the halt-watt lamp utilising a filamenl >t -pira-lised tungsten wire. In our visit we-av. Bpiral wire of this kind beingpre pa rid tr the various forms of lampsmi-lit ioned al>o\ i er the O] ribed above, the spider with the filamenl alreadywound is inserted into the glass bulb, towhich a stem has already been attachedto facilitate exhausting. The lamp i-then t the neck, or cap end, and d on to the pumping machines forexhaustion. This process is carried outin tv . the lamp- l» ling firsl put on :i» ,i rough vacuum
. Light and lighting. in the direction of the ithe Wotan Traction type, and the halt-watt lamp utilising a filamenl >t -pira-lised tungsten wire. In our visit we-av. Bpiral wire of this kind beingpre pa rid tr the various forms of lampsmi-lit ioned al>o\ i er the O] ribed above, the spider with the filamenl alreadywound is inserted into the glass bulb, towhich a stem has already been attachedto facilitate exhausting. The lamp i-then t the neck, or cap end, and d on to the pumping machines forexhaustion. This process is carried outin tv . the lamp- l» ling firsl put on :i» ,i rough vacuum pump, and after-wards on to a finishing pump so ensureobtaining a p turn. During this tion, a eurrenl is passed through thefilamenl bo as to drive off any occludedWhile a<t ually on the pumps t hebulb is sealed al the junction to whichthe glass stem has been affixed therebymaking t he pip of t he Lamp. \\ In ii finish* d the lamp- i by being overrun rtain period, and THE ILLUMINATING ENGINEER (NOV.) 531. Stemming the bulbs of Wotan lamps
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Keywords: ., bookauthori, bookcentury1900, bookdecade1900, bookpublisherlondon
