As you face the clock, the one on the right runs the time, the one on the left runs the strike. Do not be surprised if the clock begins to stop. If it has a rack and snail strike system it will jam at the 12:30 position each time. This will be because the strike train is not picking up the proper levers to allow the clock to run. You might try putting a cushion between the hammer and gong to silence it.
Stevens Clocks
October 2011