Browse Prior Art Database

Single Element Detent System

IP.com Disclosure Number: IPCOM000095388D
Original Publication Date: 1965-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 62K

Publishing Venue

IBM

Related People

Gibson, DK: AUTHOR

Abstract

The drawing shows an expansion of a single element typewriting assembly. The entire type shell 1 is rotated by shaft 3 and tilted by tilt ring 9. Shortly before the assembly is impacted bodily to effect printing of a selected character 5 on shell 1, detent wedge 7 is moved up between shell 1 and tilt ring 9. Such action accurately positions shell 1 and simultaneously supports the back of shell 1 so that it can not yield excessively during the impact of printing.

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Single Element Detent System

The drawing shows an expansion of a single element typewriting assembly. The entire type shell 1 is rotated by shaft 3 and tilted by tilt ring 9. Shortly before the assembly is impacted bodily to effect printing of a selected character 5 on shell 1, detent wedge 7 is moved up between shell 1 and tilt ring 9. Such action accurately positions shell 1 and simultaneously supports the back of shell 1 so that it can not yield excessively during the impact of printing.

Shaft 3 is rotated, tilted, and hurled toward the typewriter platen as in the selectric typewriter. Shell 1 is pinned to shaft 3 for positive transference of motion during rotation. Shaft 3 passes through hole 11 in ring 9 in a manner such that ring 9 does not rotate. Ring 9 is tilted in response to tilt linkage contained in the selectric typewriter. Subsequently in the print cycle, a detent pin temporarily enters teeth 13 of ring 9 to detent the tilted member into the tilted position.

Control member 15 is freely journaled to hole 16 in ring 9 by a pin passing through slot 17. Finger 18 on member 15 meshes with slot 19 in wedge 7. Plate 20 overlies a flange, not shown, on shaft 3 for firmly connecting shaft 3 to shell 1 during tilting. Plate 20 is screwed to ring 9 at holes 21' and 21''. Spring 23 is connected to wedge 7 and plate 20 to continually bias wedge 7 up toward the detenting position. Latch arm 25 rides in slot 27 in member 15. Arm 25 extends downwardly to be control...