Dating mechanism for calendar clocks

A dating mechanism for leaf-type calendar clocks comprising a body frame, a minute indicating drum and hour indicating drum respectively rotatably adjacently arranged on a first axis mounted on said body frame, a date indicating drum and week day indicating drum respectively rotatably adjacently arranged on a second axis parallel with said first axis, said minute and hour indicating drums being arranged parallelly above said date and week day indicating drums, a first ratchet wheel provided concentrically and integrally with said date indicating drum on one side surface of said date indicating drum, a second ratchet wheel provided concentrically and integrally with said week day indicating drum on one side surface of said week day indicating drum and opposed to said first ratchet wheel, an operating member provided integrally with said hour indicating drum on one side surface of said hour indicating drum, and a feeding lever engageable with said operating member and having a ratchet portion thereon engaging with said first and second ratchet wheels, said date indicating drum and week day indicating drum being intermittently rotated by a predetermined angle through said feeding lever at intervals of one rotation of said hour indicating drum.