THE CLOCK THAT WENT BACKWARD

This story by Edward Page Mitchell is probably the first  record we have about time travel in literature. The plot is about two cousins who inherit an old clock that takes them back to the Siege of Leyden right at the start of October 1574. There is no traveling machine here, the only traveling tool is their aunt Gertrude's old mansion, which is the setting of the story. 
Read it at "Forgottenfutures".
También puedes leerla traducida al español.