How do you turn on/off & operate 3-way bulb? One reply shows "pull chain" but that doesn't seem logical. thank you.
To operate the 3-way bulb, there is a knob under the shade, sometimes on the base, that you turn. For the lowest setting, one filament comes on (it might be a 50-watt filament). For the next setting, the second filament comes on (it might be a 100-watt filament). For the third setting, both come on, for (in our example) a total of 150 watts.