The Hamlet Project

Carriage is a funny word to have lasted all these years. It seems to have begun as a sort of cart – like – anything as wheels. And then anything that carries something else, as in this case, with the sword belts carrying swords and now we use it similarly for train cars, for baby carriers, for the fancy horse driven conveyances that people take through Central Park.
But it sounds as though carriage here is a not common usage.
It might be Osric prettying up “sword holders.”