and automatically actuated

Full Title

Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for > Locking devices applied to printing mechanisms > and automatically actuated

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• B41J 29/60 in response to failure of power supply
• B41J 29/62 by the absence of paper to lock hammer mechanism
• B41J 29/64 by a function of the printer to lock the keyboard
• B41J 29/68 by completion of a page or predetermined number of lines or exhaustion of paper to lock the keyboard
• B41J 29/70 Interlocks between any two-carriage-moving mechanisms, e.g. character-space, back space, tabulation, carriage return or carriage- release mechanisms