How does the mechanical timer control the oven's cooking duration?

The mechanical timer controls the oven's cooking duration through a simple mechanical mechanism. When the timer is set, it activates a spring-loaded or clockwork mechanism inside the timer. As the oven starts, the mechanism slowly unwinds or advances at a consistent rate, depending on the selected cooking time. This gradual movement triggers an attached gear or mechanism that operates the oven's control system.

As the timer reaches the set cooking duration, it triggers a mechanical switch that turns off the oven, halting the cooking process. This mechanical control ensures precise timing without requiring electrical power or complex electronics. The user can manually set the desired cooking time by turning the timer's knob to engage the appropriate gear ratio, making it a reliable and straightforward method to control the oven's cooking duration.