The bell ringer signals the closing of  Montmartre Cemetery (Cimetiere Montmartre) which  was first opened in 1825.

The Paris cemetery was developed in the old lime quarries situated at the foot of the Butte Montmartre, spanned by the Pont Caulaincourt, a metal bridge built in 1888.  Several steps lead you down to the cemetery and the stairway smells strongly of urine (as does the metro stairways) so it apparently serves multiple purposes.