发明名称 |
HALF BACKSPACE FOR DUAL PITCH TYPEWRITER |
摘要 |
<p>A pair of stop surfaces carried by a dual pitch escapement rack selectively directly measure half space displacement of the escapement rack in accordance with its selected pitch setting. Motion for half space displacement is derived from a circumferentially symmetrical face cam couple that directly converts input rotary motion into output linear motion of the escapement rack.</p> |
申请公布号 |
CA1014504(A) |
申请公布日期 |
1977.07.26 |
申请号 |
CA19740211472 |
申请日期 |
1974.10.16 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
GIBBONS, JOHN G.;MAROWSKI, RAYMOND M. |
分类号 |
B41J19/36;B41J19/58;B41J19/62 |
主分类号 |
B41J19/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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