I've not seen any railway signal lamps of either type before. A couple of questions:
(a) Is the first lamp lit by a candle contained within the spigot? Or is that an oil reservoir?
(b) with the second lamp, what is the colour of the filter and, again, how is that one lit?
Rod Hull and Emu in one of their shows took a party of children around a stately home. Rod Hull told the children it was the seat of Baron Rutland. He picked up a old parafin lamp and said look Baron Rutland has put his intials on it.