Browse Prior Art Database

Selection Interposer Protector

IP.com Disclosure Number: IPCOM000085070D
Original Publication Date: 1976-Feb-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Dorsey, WP: AUTHOR [+4]

Abstract

Selection interposer 10 may be engaged by the filter bail 12, which will oscillate in the direction indicated by the arrow to engage the shoulder 14 of the interposer 10. As the filter bail 12 forces interposer 10 leftward to accomplish the coding for selection in a typewriter keyboard, spring latch 16 will pivot around it pivot point clockwise against the force of spring 18. As filter bail 12 passes the point indicated by the circled "X" 20, the latch member 16 will restore under the influence of spring 18.

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Selection Interposer Protector

Selection interposer 10 may be engaged by the filter bail 12, which will oscillate in the direction indicated by the arrow to engage the shoulder 14 of the interposer 10. As the filter bail 12 forces interposer 10 leftward to accomplish the coding for selection in a typewriter keyboard, spring latch 16 will pivot around it pivot point clockwise against the force of spring 18. As filter bail 12 passes the point indicated by the circled "X" 20, the latch member 16 will restore under the influence of spring 18.

The selection interposer 10 will continue leftward as long as any portion of the shoulder 14 extends below the slope 22 of comb 24. When filter bail 12 restores to its nominal position, it will ride back up the slope 22 until it engages latch member 16 at which point it will deflate around latch member 16, and thereby not engage any other interposer which may be depressed for a subsequent letter.

This device assists eliminating malselections due to the impact of the filter bail 12 engaging another interposer after it has been cycled and before the second interposer has been fully engaged.

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