FIELD: physics.
SUBSTANCE: in a secret clock, having a housing consisting of an opaque housing rim, a transparent front glass and a transparent rear glass, a clock face with a transparent region formed by the transparent front glass, the transparent rear glass and the opaque housing rim, a clock mechanism placed inside the opaque housing rim, a time indicating means coupled with the clock mechanism and a celestial body displaying means coupled with the clock mechanism, according to the invention, the celestial body displaying means comprises, in the central part of the transparent region, a transparent actuating ratchet disc with a centre opening, kinematically linked to the clock mechanism, and a fixed glass with a primarily diametrical axis in the centre opening on which a three-dimensional model of a celestial body is mounted with the possibility of displaying the movement thereof when the transparent actuating ratchet disc rotates.
EFFECT: simple design and high manufacturability of a secret clock, easier and more reliable operation of the secret clock, cheaper production and improved visual appeal.
21 cl, 8 dwg
