identify your lightbulb > bulb identification key


STEP 2
: Un-tipped Bulbs [Whether Clear (Unfrosted), Bowl Frosted, Fully Frosted, Enamel Coated or Soft White]

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.


[The drop-down menu can be re-set by refreshing your browser window.]


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

Note: “Bulb is Un-tipped.  Although tip-less bulbs were first manufactured not long after the appearance of Edison’s first successful incandescent lamp, they were difficult and expensive to produce and are quite rare.  Today’s tip-less bulbs, which first appeared on the market in 1919, are manufactured by exhausting the air with a tube inserted into the base of the bulb and then sealed upon removal of this tube.”


OPTION A: Bulb is un-tipped and unfrosted. key no. [510]


OPTION B: Bulb is un-tipped and frosted on the outside of either the bowl only. key no. [520]


OPTION C: Bulb is un-tipped and frosted on the entire outside. key no. [530]


OPTION D: Bulb is un-tipped and frosted on the entire inside. key no. [540]


OPTION E: Bulb is un-tipped and silvered-bowl.  Bulb has a silver coating on the outside of the bowl (the lower part of the bulb) which shields the bright filament from direct viewing while reflecting the light upward for indirect illumination. key no. [550]


OPTION F: Bulb is un-tipped and smooth and has a smooth, milky white surface.  This is a White Mazda Lamp with an enamel coating. key no. [560]

OPTION G: Bulb is un-tipped and smooth and is a Deluxe White or Soft-White light bulb, also known as a Q-White bulb. key no. [570]
OPTION H: Bulb looks like the usual pear shaped household light bulb but has two extended inner leads extending the filaments into crumbled aluminum foil, strips of aluminum foil, or a tangled mass of aluminum threads that occupy most of the space inside. key no. [580.1]
OPTION I: Bulb looks like the usual pear shaped household light bulb but has two extended inner leads extending the filaments into crumbled aluminum foil, strips of aluminum foil, or a tangled mass of aluminum threads that occupy most of the space inside. key no. [580.2]
OPTION J: Bulb looks like the usual pear shaped household light bulb but has a V-shaped tungsten filament or two S-shaped tungsten filaments at the tips of the two extended inner leads as well as a metallic or silver colored drop of liquid inside it. key no. [590]


Pathway History:
START
2 || Untipped-Bulb-Options

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