My Ansonia Office Regulator.
This style of clock is sometimes referred to as a school house clock. Typically, they come in two designs: long drop and short drop. My favorite are the long drop because I prefer the larger style clock cases. Also, some of these have the more robust movements.
This particular clock was not in working order when I acquired it. One will find that most antique clocks have been worked on previously and some of the repairs are of questionable workmanship. Keep in mind that previous owners of these clocks were not collectors but users who relied daily upon these time pieces as their sole reference to time.