How do Window Blinds work?

This video covers how horizontal window blinds work. The mechanism that allows this to work is at the very top. The cord lock allows the blinds to be held up by pinching the lift strings between two rollers. The tilting of the blinds is handled by the wand tilt mechanism or the cord tilt mechanism. These mechanisms turn the gears, which turn the rod, the drums, which pulls the ladder strings to tilt the blinds.