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    • 2. 发明授权
    • Composite slide rule
    • 复合滑动规则
    • US3831840A
    • 1974-08-27
    • US33662273
    • 1973-02-28
    • FRESA ETS
    • FAUCHEUX P
    • G06C3/00G06G1/00G06G1/04G06G1/10
    • G06G1/0047G06G1/04
    • A composite slide rule showing for different type breadths defining the number of characters in a printed line the number of characters printed for various numbers of lines printed with such types. Advantageously, there is provided an elongated casing with a plurality of parallel channels the cross-section of which is preferably in the shape of a regular polygon such as an equilateral triangle, these channels slidingly housing prismatic slides of a corresponding cross-section, the sides of which carry each along its opposite edges cooperating scales of character and line numbers for a predetermined type breadth. This allows reading, through gates extending through the casing, the corresponding character and line figures for the selected character breadth.
    • 复合幻灯片规则,显示不同类型的宽度,用于定义打印行中的字符数,为使用这种类型打印的不同行数打印的字符数。 有利地,提供了具有多个平行通道的细长壳体,其横截面优选地为诸如等边三角形的正多边形的形状,这些通道滑动地容纳相应横截面的棱柱形滑动件,侧面 其中的每个沿其相对边缘配合字符和行号的尺度以达到预定类型的宽度。 这允许通过外壳延伸的门读取所选字符宽度的相应字符和行数。