Caption:
Cog Rattle. Culture: French. Dimensions: Height (Of handle and cog): 10 3/4 in (27.3 cm)
Width (Of frame): 9 1/16 in. (23 cm)
Depth: 28 9/16 in. (72.5 cm). Date: 15th or 16th century.
It was formerly the custom for the bells of Catholic churches to be silent during Holy Week, having (according to an old legend) "flown to Rome" for that period. Accordingly, the bells were replaced during the celebration of the Mass by another instrument, and this was the cog rattle - a noisemaker that produces a loud, rattling sound when whirled around its handle.