| 1/00 | Driving mechanisms |
| 1/02 | Driving mechanisms with driving weight |
| 1/04 | Driving mechanisms with driving weight Mechanisms in which the clockwork acts as the driving weight |
| 1/06 | Driving mechanisms with driving weight with several weights |
| 1/08 | Driving mechanisms with driving weight Driving weights; Chains; Chain wheels; Arbors for chain wheels |
| 1/10 | Driving mechanisms with mainspring |
| 1/12 | Driving mechanisms with mainspring with several mainsprings |
| 1/14 | Driving mechanisms with mainspring Mainsprings; Bridles therefor (mainsprings with bridles G04B 1/18; alloys C22C; springs in general F16F) |
| 1/16 | Driving mechanisms with mainspring Barrels; Arbors; Barrel axles (arrangements facilitating the removal of the mainspring G04B 33/14) |
| 1/18 | Driving mechanisms with mainspring Constructions for connecting the ends of mainsprings with the barrel or the arbor |
| 1/20 | Driving mechanisms with mainspring Constructions for connecting the ends of mainsprings with the barrel or the arbor Protecting arrangements against rupture or overwinding of the mainspring located in the barrel or attached to the barrel (in connection with keys or the like G04B 3/06, G04B 3/1; in connection with automatic winding devices G04B 5/24) |
| 1/22 | Driving mechanisms with mainspring Compensation of changes in the motive power of the mainspring (by mechanical shaping of the mainspring G04B 1/14) |
| 1/24 | Driving mechanisms with both mainsprings and driving weights |
| 1/26 | Driving mechanisms driven by liquids or gases; Liquid or gaseous drives for mechanically-controlled secondary clocks |
| 3/00 | Normal winding of clockworks by hand or mechanically; Winding-up several mainsprings or driving weights simultaneously |
| 3/02 | Normal winding of clockworks by hand or mechanically; Winding-up several mainsprings or driving weights simultaneously Removably-mounted keys or the like |
| 3/04 | Normal winding of clockworks by hand or mechanically; Winding-up several mainsprings or driving weights simultaneously Rigidly-mounted keys, knobs, or crowns (divided winding stems G04B 37/06) |
| 3/06 | Normal winding of clockworks by hand or mechanically; Winding-up several mainsprings or driving weights simultaneously Keys or the like with means preventing overwinding (protecting devices arranged in, or attached to, the barrel G04B 1/2; in connection with automatic winding devices G04B 5/24) |
| 3/08 | Normal winding of clockworks by hand or mechanically; Winding-up several mainsprings or driving weights simultaneously by parts of the cases |
| 3/10 | Normal winding of clockworks by hand or mechanically; Winding-up several mainsprings or driving weights simultaneously by parts of the cases Protecting means preventing overwinding (arranged in, or attached to, the barrel G04B 1/2; in connection with keys G04B 3/06; in connection with automatic winding devices G04B 5/24) |