In the accompanying figure the wheels between the plates are represented by plain circles to show their positions. The gut lines are wound up on barrels, fitted with winding ratchets and clicks and click springs to prevent running back. The main wheels are driven by the barrels, and are mounted upon the barrel arbors. Around the pin wheel are arranged the lifting pins, which lift the gong hammer. The pallet wheel arbor carries the gathering pallet, which gathers up the rack teeth during striking. The snail, mounted upon the star wheel, determines the number of blows to be struck at each hour. This system of wheels is known as the rack striking work, and is used in a great many French clocks and in nearly all English grandfather and bracket clocks. The letter references are as follows: - A is the striking main wheel, B pin wheel, C pallet wheel, D warning wheel, E fly, F going main wheel, G minute wheels, II centre wheel, I third wheel, J 'scape wheel, K pallets, L minute wheel cock, M warning lever X lifting piece of warning lever, 0 rack hook, P gathering pallet, Q rack, E star wheel and snail, S flirt, and T the flirt spring.

Vienna Regulator Striking Movement.