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1.发明授权Escapement mechanism and backspace mechanism for a moving paper carriage typewriter having dual pitch capability 失效具有双音调能力的移动纸架打字机的擒纵机构和退格机构
公开(公告)号：US4285605A
公开(公告)日：1981-08-25
申请号：US54059
申请日：1979-07-02
摘要： A mechanism which will function to allow the escapement of the carriage of a typewriter in one of two predetermined escapement pitches and be capable of backspace operation from a single backspace input for both pitches regardless of which escapement pitch is selected. Escapement ratchets for the two selected pitches are combined, together with a backspace ratchet. Each of the escapement ratchets are engageable by an escapement pawl and the engagement of a pawl with a particular ratchet will determine the pitch within which the escapement system will function. A backspace ratchet is combined with the escapement ratchets and fixedly attached thereto to provide the backspace drive. The backspace ratchet is selectably engageable by the backspace pawl for causing rotation in the opposite direction of that normally utilized for escapement. All motion of the escapement ratchets or backspace ratchet is transmitted through a pinion mounted to the ratchet assembly and, in turn, is transmitted to the paper carriage rack.
摘要翻译： 一种机构，其功能是允许打字机的滑架在两个预定的擒纵机构间距中的一个擒纵，并且能够从两个间距的单个后退输入中退回操作，而不管选择哪个擒纵机构。 两个选择的间距的擒纵棘轮与后退棘轮相结合。 每个擒纵轮棘爪都可以通过擒纵爪接合，并且棘爪与特定的棘轮的接合将决定擒纵系统将起作用的间距。 后退棘轮与擒纵机构棘轮组合并固定在其上以提供后退驱动。 后退棘爪可由后退爪选择地接合，用于沿着通常用于擒纵机构的相反方向旋转。 擒纵装置棘爪或后退棘轮的所有运动通过安装到棘轮组件上的小齿轮传递，并且又传递到纸架。
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公开(公告)号：US4390884A
公开(公告)日：1983-06-28
申请号：US335975
申请日：1981-12-30
CPC分类号： B41J2/33565 , B41J2/33575
摘要： A printhead assembly with a replaceable stylus insert provides for compact connection of contact pads by staggering the contact pads an offset distance that is significantly less than the pad dimension in the direction of offsetting. Preferably the offsets are symmetrically arranged about a reference line and connections are coordinated relative to the reference line so that conductor overlaps are avoided. A compressable means applies pressure to urge the contact pad into intimate engagement and ribs formed in one or both of two clamping sections concentrate pressure along alignments of contact pads.
摘要翻译： 具有可更换触针插入件的打印头组件通过使接触垫交错显着小于偏移方向上的垫尺寸的偏移距离来提供接触垫的紧密连接。 优选地，偏移量围绕参考线对称地布置，并且连接件相对于参考线被协调，使得避免了导体重叠。 可压缩装置施加压力以促使接触垫紧密接合，并且在两个夹紧部分中的一个或两个中形成的肋沿着接触垫的对准集中压力。
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