The soap opera, Days of Our Lives, has as their catchphrase, “Like sands through the hourglass, so are the days of our lives.” The meaning of that catchphrase is clear–life passes by very quickly. Life measured by the grains of sand slip through one side of the hourglass to the other in a flash.
The hourglass symbol found in a graveyard, represents the same thought of time fleeting by quickly. The stained glass window in the Rose Hill Cemetery Mausoleum depicts the hourglass with wings. Another interpretation might be, “Time Flies.”