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  2. Lamp harp - Wikipedia

    en.wikipedia.org/wiki/Lamp_harp

    Lamp harp with fluorescent bulb. A lamp harp is the component of a lamp to which the lamp shade is attached. It typically comes in two separate parts, a saddle which is fastened under the lamp socket, and the harp itself which consist of a lightweight frame attached to the saddle at its lower end and extending upwards to a point above the bulb.

  3. Finial - Wikipedia

    en.wikipedia.org/wiki/Finial

    A finial (from Latin: finis, end) [1] or hip-knob is an element marking the top or end of some object, often formed to be a decorative feature. [ 2 ] In architecture, it is a small decorative device, employed to emphasize the apex of a dome , spire , tower , roof, or gable or any of various distinctive ornaments at the top, end, or corner of a ...

  4. Edison screw - Wikipedia

    en.wikipedia.org/wiki/Edison_screw

    230/240-volt incandescent light bulb with E27 screw baseEdison screw (ES) is a standard lightbulb socket for electric light bulbs. It was developed by Thomas Edison (1847–1931), patented in 1881, [1] and was licensed in 1909 under General Electric's Mazda trademark.

  5. Lightbulb socket - Wikipedia

    en.wikipedia.org/wiki/Lightbulb_socket

    A lightbulb socket, lightbulb holder, light socket, lamp socket or lamp holder is a device which mechanically supports and provides electrical connections for a compatible electric lamp base. [1] Sockets allow lamps to be safely and conveniently replaced (re-lamping).

  6. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    1 + 12: 38.1 G13 bi-pin; Fa8 single-pin; R17d recessed double contact; One of the first diameters of fluorescent lamps, with the 15W T12 and 20W T12 having been introduced in 1938. These aren't as efficient as newer lamp options. [6] T17 2 + 1 ⁄ 8: 54 G20 Mogul bi-pin Large size for 90W T17 (preheat) and 40W T17 (instant start) PG17 2 ...

  7. United States Standard thread - Wikipedia

    en.wikipedia.org/wiki/United_States_Standard_thread

    United States Standard thread (USS thread), also known as Sellers Standard thread, [1] Franklin Institute thread [1] and American Standard thread, [2] is a standard for inch based threaded fasteners and washers. [3] The USS standard is no longer supported. It, together with the SAE fastener standard, was incorporated into the Unified Thread ...