Lucas Silver King oil light
A clever little oil lamp suited for bike riding, complete with a sprung parallelogram to handle road shocks and easy disassembly to permit cleaning. I was gifted a similar oil lamp built by Miller, and I was impressed by how easy it is to open up for cleaning. I'm assuming that the oil lamp is prone to producing smoke that sticks to the mirror and optics. I've retrofitted mine with a LED and use it as a desk ornament and night light. Considering how impossible it would be to focus a large flame, I'm guessing that these lights produced a wide beam that didn't project far. With no other bright lights around, maybe it was good enough??
Steve in Peoria