You have got a valuable Westminster chiming clock,
chimes every quarter of the hour then strikes on the Hr.
The purpose of the lever is to SILENT the chimes(why) some people are light sleepers and the chimes can disturb there sleep .
on my clock lever up chimes WORK
lever down SILENCE
I HAVE 4 STRIKING CLOCKS
2 WEST MINISTERS 2 WALL CLOCKS
wirecutterman, November 2009