OCR Text |
Show INVENTION AND Zirconium the New Filament. Zirconium Is tbo material used In tho rvoducMun of a new filament for Incnndcsccnt lamps by Prof Wedding. Wed-ding. To obtnln the filament ho submits sub-mits oxides of zirconium and magnetism magnet-ism at n high temperature to tho action ac-tion t hydrogen. Pulverizing tho re-Miltnnt re-Miltnnt alloy nnd adding a cellulose solution, It Is transformed Into a plastic plas-tic and homogeneous mass, from which tho filaments nro drawn, one pound of tho raw material yielding upwards up-wards of GO.000 filaments. They present pre-sent a metallic appearanco when enr-lionized enr-lionized In nn ntmosphero free from nit traces of oxygon. Ilequlrlng n current of only tblrty-8oven volts, threo of the zirconium lamps can bo placed In Her-les Her-les across tbo usuul 110 volt circuit, whllo for tho 220 volt circuit another typo using forty-four volts is made, flvo lamps being placed In series. Kor high candle power lamps several filaments fila-ments aro placed In tho snmo bulb and connected directly with tho 110 volt circuit. |