The A Schild 1250 movement, here in a Fortis watch, was one of the first automatic movements. It is a uni-directional automatic movement with a bumper system rather than a rotor doing a full rotation.
Full movement
The springs at the end of the rotor’s path are clearly visible
Rotor spring
The rotor and automatic mechanism
Close up on the rotor
The click where the rotor connects with the central wheel lets the rotor move without turning the wheel one way, but winds the wheel when moving in the opposite direction
The underside of the automatic mechanism. Notice the winding teeth at the centre of the wheel
Winding wheel removed
The rotor fits between two prongs of the automatic bridge
The wheel with the three holes is the one with the winding teeth
The spring bridge holds a winding pinion in place
The winding pinion connects with the ratchet wheel
Winding pinion and winding wheel
The winding pinion was removed
Unlike many movements with centre and fourth wheels on top of each other to display central seconds, there is a jewel holding the fourth wheel rather than a spring.
Gear train. The centre wheel is underneath the fourth wheel
The extended pinion of the escape wheel is driven by the fourth wheel
The fourth wheel and its bridge have been removed, the centre wheel is visible at the centre
