Swing the hinged glass cover open. Move the minute hand clockwise, Pause at the 12 o'clock position if the the clock strikes the hour. Pause also at the 6 o'clock position if the clock strikes the half-hour as well. Continue turning the minute hand clockwise until the hour hand is at the correct position.
Move the minute hand clockwise until it indicates the minutes before or after the hour.
Insert the key into the winding aperture on the face of the clock. Turn the key clockwise. When you feel the spring tighten, stop turning and remove the key. If the clock is a chiming clock, that is, it chimes at the hour, or hour and half-hour, insert the key and wind until you feel the spring tighten.
Remove the key when you have finished winding the clock. Close the hinged glass over the face of the clock. Place the key where it may be readily found when again needed.