File:The Maxim Electric Light and Power Co., Philadelphia. (1882) (14593828467).jpg

Identifier: TheMaximElectricLightAndPowerCo.Philadelphia_595
Title: The Maxim Electric Light and Power Co., Philadelphia.
Year: 1882 (1880s)
Authors: United States Electric Lighting Company
Subjects: electricity Division 26 lighting power supply
Publisher: United States Electric Lighting Company
Contributing Library: Canadian Centre for Architecture

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ly inclosed, and moreperfect insulation is secured, bothof the electrical connections andof the carbons themselves, thanis attainable by any other con-struction. The same style of framemay be used for duplex lamps. These lamps are especially de-signed for series lamps, as thefeeding mechanism of each lampis entirely independent, in its op-eration, of that of other lamps inthe same circuit. They workequally well, however, as singlelamps. For use with reflectors in steam-boat and head-light projectors andthe like, we make a focusing lampshown in the cut on this page. Inthis lamp both carbons are mov-able, and their relative rates ofmovement are so adjusted thatthe arc is maintained at a fixedpoint. The feeding mechanism of theWeston lamp is simple in construc-tion, and extremely sensitive andcertain in operation. It maintainsthe proper adjustment of the car-bon points with almost mathe-matical precision, and respondsimmediately to the slightestfluctuations in the strength of thecurrent.
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ng I^amp. THE UNITED STATES ELECTRIC LIGHTING CO. 15 AUTl >W T-OUT. WHEN lamps are run in series, two different forms of automatic cut-out areused with each lamp for shunting the lamp out of circuit, in case the feed-ing mechanism should for any reason fail to act. One of these consists of anelectro-magnet placed in the circuit of each lamp, and so arranged as to el<shunt about the lamp whenever the circuit through it is for any reason interrupted,thus preventing the extinguishing of the other lamps in the series. The other form of automatic cut-out (shown in the cut on this p pecially designed to prevent any injurious elonga-tion of the arc through failure of the feeding mechan-ism to work properly. It consist witchnormally held open by a mall plug, made of an alloywhich (uses at a verylow temperature. Thisplug is placed nearthe upper carbon, butat a sufficient dis-tance above the arcto prevent its meltingwhen the arc is olnormal length. It,however, the feedingmechanism fails t

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