Society of Glass Technology · [Sheffield] · leaf 616
vessels were given. There were several schedules for the arrangement of lightingcircuits both on passenger- and war-ships. Interesting detailswere given of an indicator which showed when the navigationlamps were burning satisfactorily, and gave an audible signalwhen they failed. The discussion… … Fig. 153. 186 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. 331. Apparatus for Manufacturing Incandescent LampParts. W. P. Dickson, Maplewood, New Jersey (Assignor to West-inghouse Lamp Co. (U.S.A. Pat., No. 1368552, February 15th,1921. Filed April 16th, 1918, No. 228909).—This invention refersto…
Glass
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