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Timepiece able to indicate the sunrise or sunset anywhere in the world

机译:钟表可以指示世界上任何地方的日出或日落

摘要

The timepiece comprises means for indicating the sunrise and sunset taking account of seasonal variations. These means comprise a sphere reproducing the terrestrial globe, a shell arranged concentrically to the sphere and arranged to demarcate one portion of the terrestrial globe where it is night from another portion where it is day by indicating the position of the Earth's terminator. The shell can pivot about the globe on two axes perpendicular to each other. The shell is driven by the movement so as to rotate at a rate of one revolution per 24 hours about the polar axis. A disconnecting mechanism is controlled by an annual cam which has a profile representative of the tilt of the Sun with respect to the equatorial plane. The disconnecting mechanism controls the tilt of the shell about the axis by means of a drive shaft concentric to the polar axis.
机译:该钟表包括用于考虑季节变化来指示日出和日落的装置。这些手段包括一个复制地球仪的球体,一个与该球体同心排列的壳,并通过指示地球终结者的位置来区分地球仪的一个部分,将其从夜晚的另一部分划分为夜晚。壳可以在相互垂直的两个轴上绕地球旋转。机壳受到机芯的驱动,使其绕极轴每24小时旋转一圈。断开机构由环形凸轮控制,该环形凸轮的轮廓表示太阳相对于赤道平面的倾斜度。断开机构通过与极轴同心的驱动轴控制壳体围绕轴的倾斜。

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