TOTAL DEPTH

In the study of the lever escapement, the total depth is the angle through which the Escape wheel rotates while one of its teeth remains in contact with a Pallet stone of the pallets, from its Drop (impact) on the resting plane until the end of the impulse. It thus combines two phases: the rest, during which the tooth remains stationary on the resting plane of the Lift, and the impulse, during which the tooth slides along the inclined plane and transmits energy to the Balance. Mastery of Total depth is essential to the proper functioning of the Escapement: it determines the safety, efficiency and energy consumption of the system. A poorly set depth results in amplitude defects, stopping points or premature wear of the Lifts and the wheel. This parameter, studied by escapement theory, guides the design of the teeth and Pallet stones as well as the Escapement-making (finishing) operations. It illustrates the fine geometry that governs the beating heart of the Movement mechanism.

Useful link:

– Escapement-making (finishing)