Natural escapement for a horological movement and horological movement comprising such an escapement

A natural escapement for a horological movement performing a succession of operating cycles each composed of a first and a second alternation of a balance, the balance comprises a balance wheel on an axis and a balance plate adjusted about the axis, said natural escapement comprising:

• a first escapement wheel arranged to be driven by a second wheel, said first escapement wheel in turn driving a second escapement wheel, the balance plate carrying a balance pin wherein said balance plate causes pivoting of an anchor at each of the first and second alternations;
• and
• a first lever, pivoted about a pivot axis, being connected to a first arm of the anchor via at least one pivot joint, the anchor comprising a second arm extended by a second lever,
• wherein said first and second levers being arranged to respectively lock the first and second escapement wheels temporarily during the second and first alternations of an operating cycle, the pivoting displacement of the first and second levers being limited.