Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 173
.-.6 THE [LLUMINATING ENGINEER (ma^ 1922) The process of filamenl mounting com-prises (a) the mounting of the pigtailhooks ; (b) the spot-welding of leading in wires t<> metal tajx- electrodes, wherenecessary; (c) the testing of spirals pose of sealing in the foot and filamentwithin the bulb.… … Section of Photometric Department, sho\vin_r Sphere Photometer incorner of room. before mounting ; and (d) flashing thefilament to remove, by chemical means, any traces of the lubricant used indrawing the wire. Special machines are used for the pur* pip is located inside the cap of the lamp sothai…
Lighting
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