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Bulh Cleanser — Wriglit and Egeler 353
Mr. Depue : Are they going to put that cleaning material in smaller lamps ?
Mr. Wright : We will probably go on down the line. Just what point will be reached, we do not know\ I do not think it would be feasible to go further than the 500-watt lamps.
Mr. Beggs : To assure the best results with the least labor and at the lowest cost, it is necessary to select the best, and standardize it. This is especially true in the motion picture business where great strides have been made. Now is the time to standardize the incandescent lamps used in sound apparatus. I did not have time last week to prepare a paper, but I would like to read some recommendations the lamp manufacturers have to offer.
The lamp manufacturers propose the following lamps with the recommendations that existing equipments be arranged to use them where they are not already suitably designed, and that all new equipments be made to accommodate them.
1 — Camera and Recorder Marker and Indicator lamps — Mazda lamp No. 41 (2.B Volt T4 bulb miniature screw base Radio Panel)
2 — Reproducer (Photocell exciter) lamp — 10 Volt 7.5 Ampere T8 bulb S. C. bayonet cand. base, C6 filament reproducer lamp.
3 — Indicator and turntable illuminator lamp, 10 watt 115 volt Sll bulb (clear) intermediate screw base sign and decorative lamp.
4 — Recorder and Reproducer Signal and double Turntable illuminator lamp, 25 watt 115 volt S19 bulb (inside frost) medium screw base general lighting lamp.
5 — Recorder lamp — 5 volt 6 ampere Sll bulb S.C. bayonet cand. base C2 filament recorder lamp.
It is strongly urged that all designers obtain full details concerning these lamps before they proceed with their work. The lamp manufacturers will be delighted to cooperate.
Mr. Egeler : For a large studio the lamp cost per hour is slightly above 80 cents for the 10 kw. size, and about 32 cents for the 5 kw. size.
Mr. Crabtree : I have no desire to argue against incandescent lamps. But one argument is the danger of the bulb breaking when making closeups. Have any means been taken to prevent splintering ?
Mr. Egeler : The danger of the lamps splintering is very small. Of course on those equipments which are used for close-ups, they should put on cover glasses. That is the simplest answer.