I always wanted to get my hands on one of those WWII searchlights.For several years I worked for a company which provided W.W.II surplus searchlights for advertising purposes. I can't remember how many "New Car Premiers" I ran lights for back in the '60s. Gas-powered generators running 120A arcs in 60" reflectors. We'd get about 1-1/4 hr. on a trim, then a fast re-trim, strike it up and keep going until closing. I also worked in an outdoor summer theatre running musicals. We had a Strong Trouper as the primary light, but one year a second arc one was needed. It fell to me to ressurect a Halll & Connoly lamp--I guess about a 150A lamp-- and make it work after many years of disuse. Fun job. The H&C was a nice lamp, threw a good light, but was much more of a pain to run than the Trouper.
Those lamps are Genarco Metro Lites. Probably inspired by H&C . Brenkert never made high intensity carbon arc follow spots. although they certainly produced a number of high intensity projector arc lamps for film projection.
it was so long ago that i can’t say for sure that these are exactly what we operated, but when i worked at radio city music hall from around 1973 - 1975, one of my jobs (as well as training on the original lighting console) was as a front light operator. (another was operating a follow spot as a sidelight on the side bridges—there were bridges about 35’ above the stage on the OP (SL) and P (SR) sides). an aside: one time the assistant carpenter fell from a side bridge, landed on a bunch of cardboard boxes and ‘walked’ away. (not many theaters use that nomenclature: Prompt and Opposite Prompt, but the genesis is that the stage managers called from the most convenient side and their location was a reference for many other functions. i think the Met Opera does the same thing).