identify your lightbulb > bulb identification key


STEP 4: Bulbs without Threaded Bases


Select the option most resembling your bulb from the drop-down menu to proceed to the next step. Please consult "option descriptions" for detailed info.


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FULL OPTION DESCRIPTIONS / IMAGE GLOSSARY: [Option titles are also linked to proceed to the next step.]


OPTION A: Bulb has no threaded base but a plain neck with two copper wires on opposite sides of its neck. This is a simple wire terminal plug-in base. Each end of the two wires is soldered to the corresponding end of the leading-in wire and the other end is used for connecting to an electrical circuit with a power source. [62a]


OPTION B: Bulb has no threaded base but a plain neck two copper wires on opposite sides of its neck. This is a simple wire terminal plug-in base. Each end of the two wires is soldered to the corresponding end of the leading-in wire and the other end is used for connecting to an electrical circuit with a power source. Neck is inserted into a wooden standing “lamp base.” Lamp base has two strips of copper fastened on opposite sides of its inside as well as two ordinary binding posts that are designed to fasten the circuit wires to the power source. [64]


OPTION C: Bulb has no threaded base but a plain neck with two strips of copper foil on opposite sides of its neck. This is a simple plug-in base with copper strip terminals. Each end of the two strips of copper foil is soldered to the corresponding end of the leading-in wire and the other end may be held up against the neck of the bulb by string wrapped around it. [62aa]


OPTION D: Bulb has no threaded base but a plain neck with two strips of copper foil on opposite sides and neck inserted into a wooden standing “lamp base.” Lamp base has two strips of copper fastened on opposite sides of its inside as well as two ordinary binding posts that are designed to fasten the circuit wires to the power source. This is a simple plug-in base with copper foil terminals. Each end of the two strips of copper foil is soldered to the corresponding end of the leading-in wire and the other end may be held up against the neck of the bulb by string wrapped around it. Neck is inserted into the “lamp base.” [62]


OPTION E: Bulb has neck inserted into a wooden or plastic standing “lamp base” having two ordinary binding posts. Neck of bulb may be glued into base (do not attempt to force the bulb out). [62b]


OPTION F: Bulb has no threaded base but a plain neck with two strips of copper foil on opposite sides of neck.  Neck is inserted into a socket that consists of a hollowed-out piece of wood which itself has two strips of copper fastened on opposite sides of its inside and a thumb screw on the outside of the socket for tightening the light bulb’s base in the socket and forcing the copper strips in the socket and on the bulb to make contact. This is a simple plug-in base with copper strip terminals. Each end of the two strips of copper foil on the neck of the bulb is soldered to the corresponding end of the leading-in wire and the other end may be held up against the neck of the bulb by string wrapped around it. [63]




Pathway History:
START
2 || Tipped-Bulb-Options
3 || Base-Shape
4 || Bulbs-Without-Threads

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