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    Geographical sundial
    81.
    发明授权
    Geographical sundial 失效
    地理日ial

    公开(公告)号：US4520572A

    公开(公告)日：1985-06-04

    申请号：US589425

    申请日：1984-03-14

    申请人： Athelstan Spilhaus

    发明人： Athelstan Spilhaus

    IPC分类号： G04B19/02 ,  G04B19/22 ,  G04B49/02

    CPC分类号： G04B19/02 ,  G04B19/226 ,  G04B49/02

    摘要： A sundial comprising a transparent hollow globe marked with latitude and longitude lines and including a map of the world is mounted on a stationary base. The globe is adjustable with respect to the base to enable the polar axis to be inclined toward a geographic pole of the earth and to permit alignment of a desired geographic location on the map with an index point. A reflector is mounted at the center of the globe and focuses an image of the sun onto the interior surface of the globe. The image traverses the globe as the earth rotates, thereby tracking the actual path of the sun with respect to the earth on the globe surface.

    摘要翻译： 包括标有纬度和经度线并且包括世界地图的透明中空球体的日is安装在固定基座上。 地球仪相对于基座是可调节的，以使极坐标轴朝向地球的地理极点倾斜，并允许地图上的所需地理位置与索引点对齐。 反射器安装在地球的中心，将太阳的图像聚焦到地球的内表面上。 当地球旋转时，图像横穿地球，从而跟踪太阳相对于地球表面的实际路径。

    True north meridian indicator
    82.
    发明授权
    True north meridian indicator 失效
    真正的北子午线指标

    公开(公告)号：US4050161A

    公开(公告)日：1977-09-27

    申请号：US635308

    申请日：1975-11-26

    申请人： Tokutaro Yabashi

    发明人： Tokutaro Yabashi

    IPC分类号： G04B49/02 ,  G04B49/04 ,  G01C17/34

    CPC分类号： G04B49/02

    摘要： A meridian indicator comprising a base plate, an inclined plate disposed at a selected angle to the base plate, an hourly graduated arcuate plate, means rotatively supporting the arcuate plate upon the inclined plate, a rectangular style plate, means supporting a first edge of the style plate at a selected angle to the inclined plate, means angularly displacing the style plate at a selected angle relative to a horizontal plane, a weighted string means attached to a second edge of the style plate which is parallel to the first edge, aperatures in the inclined plate and the arcuate plate positioned so that weighted string means adjustably passes therethrough, and a latitude scale means deposed on the inclined plate and juxtapositioned to the weighted string means as it passes through the aperatures, an equation of time correction scale means disposed upon the arcuate plate, and a longitude scale means disposed upon the inclined plate in juxtaposition to the equation of time correction scale means, the arcuate plate having hourly graduations so that when a third edge of the style plate is pointing to true north, the shadow of the sun of the third edge of the style plate falls correctly upon an hourly graduation upon the arcuate plate to read true solar time.

    摘要翻译： 子午线指示器，包括基板，与基板成一定角度设置的倾斜板，小时刻度的弧形板，用于将弧形板旋转地支撑在倾斜板上的装置，矩形板，支撑第一边缘的装置 相对于倾斜板以选定角度的板状板，意味着相对于水平面以选定的角度角度地移动样板，连接到与第一边缘平行的型板的第二边缘的加权线装置， 倾斜板和弧形板被定位成使得加权绳形装置可调节地穿过其中，并且纬度刻度意味着放置在倾斜板上，并且在其通过温度时并置到加权弦装置上，时间校正比例装置被放置在 弧形板和与时间校正sc等式并列设置在倾斜板上的经度标尺装置 啤酒厂意味着，弓形板具有小时刻度，使得当样板的第三边缘指向真正的北部时，样板的第三边缘的太阳的阴影在弓形板上小时刻度上正确地下降以读取 真正的太阳时代。

    Sundial
    83.
    发明授权
    Sundial 失效
    晷

    公开(公告)号：US3786570A

    公开(公告)日：1974-01-22

    申请号：US3786570D

    申请日：1972-07-31

    申请人： DAVIES R

    发明人： DAVIES R

    IPC分类号： G04B49/02 ,  G04B49/00

    CPC分类号： G04B49/02

    摘要： An improved sundial comprising a reflective surface member supported in a plane parallel with the earth''s axis and adapted to receive and reflect sun rays; a non-reflective line inscribed along said reflective surface parallel to the axis of the earth''s rotation and adapted to project a shadow; a translucent semicylindrical member projected over said surface and co-axial about said line, the surface of said cylinder carrying a time scale observable from the exterior of the translucent member such that the shadow is highlighted by a bright sunlit outline of reflected sun rays with said shadow indicating the time of day.

    摘要翻译： 一种改进的日ial，其包括反射表面构件，所述反射表面构件支撑在与地球轴线平行的平面中并适于接收和反射太阳射线; 沿着所述反射表面刻划的不反射线，其平行于地球旋转的轴线并适于投射阴影; 半透明的半圆柱形部件突出在所述表面上并且围绕所述线共轴，所述圆柱体的表面承载从半透明部件的外部可观察到的时标，使得阴影由反射的太阳光线的明亮的阳光照射的轮廓突出， 阴影指示一天中的时间。