Sentence:  Mr. Winkle, catching sight of a lady's face at the window of the sedan, turned hastily round, plied the knocker with all his might and main, and called frantically upon the <WSD>chairman</WSD> to take the chair away again. 
Meaning of the word marked with <WSD> tags:  Someone whose job is to carry people in a portable chair, sedan chair, or similar conveyance.