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1. 发明公开

EP0022171A3 Direct keyboard controlled character selection rack shifting device for a single element typewriter 失效
标题翻译：直接键盘控制字符选择用于单元件类型的机架移位装置
公开(公告)号：EP0022171A3
公开(公告)日：1982-07-28
申请号：EP80102989
申请日：1980-05-29
申请人： International Business Machines Corporation
发明人： MacDaniel, Robert Frederick , Prewarski, Mike , Ramey, Leonard David
IPC分类号： B41J07/50 , B41J25/24
CPC分类号： B41J25/24 , B41J7/50
摘要： Device for shifting a bifurcated character selection rack (12) between a first position and a second position, thereby engaging alternate portions (14, 16) of the rack with a pinion (18) controlling the rotation of the typehead (10) of a typewriter. The rack shifting mechanism (58,60,46,32) is controlled by a direct link (62) to the keyboard of the typewriter which responds to movement of a shift key-lever. The mechanism performs a force multiplication and, at the same time, a displacement division function to reduce a relatively large keylever and link displacement to a relatively small rack displacement. The rack shifting mechanism translates the rack to engage the alternate rack portion with pinion (18) thereby reversing the rotation of the pinion and allowing characters to be selected from the opposite hemisphere ofthetype element in response to a character selection input.

2. 发明授权

EP0022171B1 Direct keyboard controlled character selection rack shifting device for a single element typewriter 失效
标题翻译：直接键盘控制字符选择用于单元件类型的机架移位装置
公开(公告)号：EP0022171B1
公开(公告)日：1984-08-22
申请号：EP80102989.3
申请日：1980-05-29
申请人： International Business Machines Corporation
发明人： MacDaniel, Robert Frederick , Prewarski, Mike , Ramey, Leonard David
IPC分类号： B41J7/50 , B41J25/24
CPC分类号： B41J25/24 , B41J7/50

3. 发明公开

EP0022171A2 Direct keyboard controlled character selection rack shifting device for a single element typewriter 失效
标题翻译：直接从键盘从控制型选择机构和Zahnstangenumschaltvorrichtung为单个元件打字机。
公开(公告)号：EP0022171A2
公开(公告)日：1981-01-14
申请号：EP80102989.3
申请日：1980-05-29
申请人： International Business Machines Corporation
发明人： MacDaniel, Robert Frederick , Prewarski, Mike , Ramey, Leonard David
IPC分类号： B41J7/50 , B41J25/24
CPC分类号： B41J25/24 , B41J7/50
摘要： Device for shifting a bifurcated character selection rack (12) between a first position and a second position, thereby engaging alternate portions (14, 16) of the rack with a pinion (18) controlling the rotation of the typehead (10) of a typewriter. The rack shifting mechanism (58,60,46,32) is controlled by a direct link (62) to the keyboard of the typewriter which responds to movement of a shift key-lever. The mechanism performs a force multiplication and, at the same time, a displacement division function to reduce a relatively large keylever and link displacement to a relatively small rack displacement. The rack shifting mechanism translates the rack to engage the alternate rack portion with pinion (18) thereby reversing the rotation of the pinion and allowing characters to be selected from the opposite hemisphere ofthetype element in response to a character selection input.
摘要翻译：装置用于在第一位置和第二位置之间移动的分叉字符选择齿条（12），从而接合所述齿条的交替部分（14,16）与一个小齿轮（18），其控制一台打字机的类型头部（10）的旋转，齿条移动机构（58，60，46，32）由直接链路（62）连接到键盘这是为了响应换档键杆的运动的打字机的控制。所述机构执行的力倍增，并在同一时间，位移分割功能，以减少相对大keylever和位移链接到相对小的机架位移。齿条移动机构反酸酯齿条接合与小（18）替代齿条部分从而反转小齿轮的旋转和待从类型元件的相对半球响应于字符选择输入选择的字符允许。

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