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88 条记录 (耗时 0.012 秒)

    Keyboard operated transmitter
    1.
    发明授权
    Keyboard operated transmitter 失效
    键盘操作发射机

    公开(公告)号：US3651260A

    公开(公告)日：1972-03-21

    申请号：US3651260D

    申请日：1969-09-04

    申请人： MITE CORP

    发明人： DONOVAN TIMOTHY F ,  RYAN WILLIAM P

    IPC分类号： H04L17/04 ,  H04L17/12

    CPC分类号： H04L17/04

    摘要： A keyboard operated telegraph transmitter having an array of keys is provided. The transmitter includes a plurality of code bars which are shiftable by the depression of the keys and also includes switching means operatively connected to and actuated by the shifting of the code bars. The switching means includes a circuit board having a plurality of conductive areas positioned on a surface thereof, and a contact means which is secured to each of the code bars and electrically connects several of the conductive areas on the circuit board. When the code bars are shifted the movement is transformed into an output coded signal from the circuit board. Additional features of the transmitter include a parity check system, and a motion multiplying mechanism which is designed to facilitate the operation of the keyboard. Still another feature is the inclusion of three shift keys for the purpose of transmitting a maximum number of indicia with a minimum number of keys.

    摘要翻译： 提供了具有键阵列的键盘操作的电报发送器。 发射器包括可通过按下键而移位的多个代码条，并且还包括可操作地连接到代码条的移位并由代码条移动的切换装置。 开关装置包括具有位于其表面上的多个导电区域的电路板和固定到每个编码条并且电连接电路板上的多个导电区域的接触装置。 当码条被移位时，运动被转换成来自电路板的输出编码信号。 发射机的附加特征包括奇偶校验系统和被设计为便于键盘操作的运动倍增机构。 另一个特征是包括三个移位键以便发送具有最小数量的键的最大数量的标记。

    Evans
    9.
    发明授权
    Evans 失效

    公开(公告)号：US372846A

    公开(公告)日：1887-11-08

    申请号：US372846D

    CPC分类号： H04L17/04

    Geoege a
    10.
    发明授权
    Geoege a 失效

    公开(公告)号：US335682A

    公开(公告)日：1886-02-09

    申请号：US335682D

    CPC分类号： H04L17/04