Top-hatted

Half-an-hour later the whistle blew to summon the passengers back to the train, and they then moved on to Tetbury, where a procession was formed and slow-marched into the centre of the town, led by two top-hatted "mourners".

Source: wiktionary

While walking in the off-peak over the small wood-panelled footbridge [at Baker Street station] that connects the two original platforms - which itself resembles an old-fashioned railway carriage hoisted above the tracks - I would not be surprised to see a top-hatted man approaching me.

Source: wiktionary

The top-hatted “drinking bird,” once a fixture in science classrooms for demonstrating the basics of thermodynamics, is making a surprising comeback — as the inspiration for a new clean-energy generator that could one day power your watch and phone.

Source: wiktionary