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Space To Print and Print To Space Interlock

IP.com Disclosure Number: IPCOM000090941D
Original Publication Date: 1969-Aug-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Emig, MB: AUTHOR

Abstract

Typewriter print and interword space operations are mutually interlocked by rotatable bail 10. A typewriter having a keyboard like that described in U. S. Patent 3,086,635 includes print cycle clutch latch 11 that is urged leftwardly by spring 12 and is retained by latch 13 acting against frame keeper plate 14. Depression of latch 13 frees control arm 15 for movement by spring 12 to initiate a print cycle.

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Space To Print and Print To Space Interlock

Typewriter print and interword space operations are mutually interlocked by rotatable bail 10. A typewriter having a keyboard like that described in U. S. Patent 3,086,635 includes print cycle clutch latch 11 that is urged leftwardly by spring 12 and is retained by latch 13 acting against frame keeper plate 14. Depression of latch 13 frees control arm 15 for movement by spring 12 to initiate a print cycle.

U. S. Patent 3,126,998 describes a typewriter escapement mechanism that can be employed in a typewriter like that described in U. S. Patent 3,086,635. That escapement mechanism includes an interword space interposer 16 that is spring-loaded rightwardly but is retained against the spring load by pivoted latch 17 acting against frame mounted keeper 18. Keyboard control member 19 operates to displace interposer 16 and its latch 17 downwardly away from keeper 18 to permit interposer 16 to move rightwardly and initiate an interword space operation. Both the print operation and the interword space operation include the function of restoring their respective control members 15 and 16 to their latched positions prior to completion of the operation.

Interlock bail 10 includes finger 20 normally lying out of the horizontal path of member 15 and displaceable to a position intercepting ledge 21 of member 15. Bail 10 also includes torque extension 22 that is connected through link 23 to interposer 16.

In the sequence space print,...