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1. 发明授权

US3645015A Morse code teaching device 失效
标题翻译： MORSE代码教学设备
公开(公告)号：US3645015A
公开(公告)日：1972-02-29
申请号：US3645015D
申请日：1970-08-10
申请人： DAGOBERT F PFEIFFER
发明人： PFEIFFER DAGOBERT F
IPC分类号： G09B19/26 , G09B1/28
CPC分类号： G09B19/26
摘要： A device for teaching Morse code comprising four flat members in superposition. These four members comprise a base member imprinted with alphamerics except ETANIM, a first central member slidably mounted on the base member having a series of windows for viewing a selected group of alphamerics from among those imprinted on the base member, a second central member slidably mounted on the first central member having a window positioned at right angles to the series of windows on the first central member, and a top member mounted on the second central member and affixed to the base member. The window of the second central member permits viewing a single indicium from among the selected group of alphamerics viewed through the series of windows in the first central member. The top member has a window for viewing the single indicium observable through the window in the second central member. The top member has imprinted thereon the letters ETANIM, and the positive integers if desired, and has two sets of Morse indicia corresponding to these alphamerics. Means are provided for sliding the first and second central members relative to the top and bottom members. The alphameric indicia on the base member are positioned such that the sum of any Morse indicium selected from each of the two sets of Morse indicia by movement of indicating means associated with the central members will cause display of an alphameric corresponding to the sum in the window of the second central member.
摘要翻译：用于教授莫尔斯电码的装置，包括叠加的四个平坦构件。这四个部件包括一个基本部件，其中印有除了ETANIM之外的标准物质，第一中心部件可滑动地安装在该基部部件上，该第一中心部件具有一系列窗口，用于从被印刷在该基部部件上的那些中观察所选择的一组符号;一个可滑动地安装在第一中心构件上具有与第一中心构件上的一系列窗口成直角的窗口，以及安装在第二中心构件上并固定到基座构件的顶部构件。第二中心构件的窗口允许从通过第一中心构件中的一系列窗口观看的所选择的一组正视对象中观看单个标记。顶部构件具有用于观察通过第二中央构件中的窗口可观察到的单个标记的窗口。顶级成员在其上印有ETANIM字母，如果需要，其中包含正整数，并且具有与这些符号对应的两组Morse标记。提供了用于使第一和第二中心构件相对于顶部构件和底部构件滑动的装置。定位在基座上的符号标记使得通过与中心成员相关联的指示装置的移动，从两组莫尔斯标记中的每一组中选出的任何莫尔斯标记的总和将导致显示对应于窗口中的和的符号的第二个中央成员。

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