Browse Prior Art Database

Multiple Cycle Selection

IP.com Disclosure Number: IPCOM000090678D
Original Publication Date: 1969-Jun-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Abell, WA: AUTHOR

Abstract

Keyboard 10, like that in U. S. Patent 3,086,635, is provided with multiple output interposers 11a, 11b, etc., which respond sequentially to a single depression of keylever 12. Keyboard 10 remains locked against inadvertent additional key depression until, e.g., the final interposer 11b is operated. Depression of keylever 12 places lock interposer 13 in ball interlock tube 14 to prevent depression of other keys. Interposer 11a and 11b do not engage interlock 14. Interposer 11a is also displaced downwardly by depression of keylever 12 acting through link 13a. Drive surface 15 is thus aligned with the filter shaft 16 and cycle control bail 16a is depressed.

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Multiple Cycle Selection

Keyboard 10, like that in U. S. Patent 3,086,635, is provided with multiple output interposers 11a, 11b, etc., which respond sequentially to a single depression of keylever 12. Keyboard 10 remains locked against inadvertent additional key depression until, e.g., the final interposer 11b is operated. Depression of keylever 12 places lock interposer 13 in ball interlock tube 14 to prevent depression of other keys. Interposer 11a and 11b do not engage interlock 14. Interposer 11a is also displaced downwardly by depression of keylever 12 acting through link 13a. Drive surface 15 is thus aligned with the filter shaft 16 and cycle control bail 16a is depressed. As fully described in the patent, shaft 16 rotates to drive interposer 11a leftwardly thus generating a keyboard cycle to produce a coded output by displacing selected code bails 17. Interposer 13 has no drive surface 15 and thus remains in interlock 14 as retained by leaf spring latch 18. Operation of an output device, not shown, in response to the leftward movement of interposer 11a displaces interposer 11b downwardly, as by action of remote control pneumatic bellows 19. Interposer 11b thus progresses through a cycle as driven by shaft 16 to generate a second output by selective displacement of the output bails 17. Interposer 11b also drives restore bail 20 leftwardly to drive interposer 13 from interlock 14 to terminate the multicycle operation and allow subsequent keyboard entry. Any...