发明名称 |
Justifying text writing composing machine |
摘要 |
A mechanism which provides bi-directional movement of the carrier of an electric typewriter incorporating proportional spacing. A ratchet arrangement is operable in both directions to provide the desired proportional spacing increments, with rotation of a ratchet wheel in the clockwise direction being controlled by engagement of an associated pawl with one of a plurality of stop engaging surfaces of a control member which sets the number of proportional spacing increments desired. For rotation of the ratchet wheel in the counterclockwise direction, a solenoid is coupled to the control member to momentarily rotate it clockwise until a stop engaging surface thereof abuts a selected stop surface corresponding to the number of proportional spacing increments desired, and causing the pawl associated with the ratchet wheel to move clockwise by a corresponding number of ratchet teeth-after which the solenoid is released, permitting a cocked spring to return the control member to its initial position and cause the pawl to rotate the ratchet wheel counterclockwise by a corresponding number of proportional spacing increments.
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申请公布号 |
US4273455(A) |
申请公布日期 |
1981.06.16 |
申请号 |
US19780945802 |
申请日期 |
1978.09.25 |
申请人 |
REALTY AND INDUSTRIAL CORPORATION |
发明人 |
GUBELMANN, DECEASED, W. S.;GUBELMANN, EXECUTOR, BY WALTER S.;GRIER, WILLIAM R. |
分类号 |
B41B25/10;(IPC1-7):B41J19/62 |
主分类号 |
B41B25/10 |
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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