Browse Prior Art Database

Selection System

IP.com Disclosure Number: IPCOM000090727D
Original Publication Date: 1969-Jun-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Hickerson, JE: AUTHOR

Abstract

The selection system employs thin perforated metal tapes and pulleys for positioning a print element in response to character selection signals. The selection system comprises thin perforated metal tapes 10 and 11, biased to the right by springs 12 and selectively moved to the left upon rotation of cams 13 and 14 respectively. A pair of pulley assemblies is also provided and includes toothed pulleys 15 and 16 mounted on light weight carriers 17 and 18. The latter are biased by springs 19 and are connected to the ends of tapes 20 and 21. Cam 22 is selectively rotatable to move pulley 15, carrier 17, and tape 20 to the right against the action of spring 19. The right end of tape 21 is guided for movement by pin and slot connection 23. Output tape 24 is connected by conventional driving mechanism to a print element not shown.

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Selection System

The selection system employs thin perforated metal tapes and pulleys for positioning a print element in response to character selection signals. The selection system comprises thin perforated metal tapes 10 and 11, biased to the right by springs 12 and selectively moved to the left upon rotation of cams 13 and 14 respectively. A pair of pulley assemblies is also provided and includes toothed pulleys 15 and 16 mounted on light weight carriers 17 and 18. The latter are biased by springs 19 and are connected to the ends of tapes 20 and 21. Cam 22 is selectively rotatable to move pulley 15, carrier 17, and tape 20 to the right against the action of spring 19. The right end of tape 21 is guided for movement by pin and slot connection 23. Output tape 24 is connected by conventional driving mechanism to a print element not shown.

Movement of tape 10 to the left in response to rotation of cam 13 causes pulley 15 to rotate clockwise. Pulley 15 engages tape 21 and pulls it to the right so that pulley 16 rotates clockwise. Tape 24 moves to the right by a distance corresponding to the input movement imparted to tape 10. When cam 14 rotates simultaneously with cam 13, tape 11 is moved to the left. This imparts an extra degree of clockwise rotation to pulley 16 which is reflected in additional movement of tape 24. In the event cam 22 is also rotated under these conditions, additional clockwise movement is imparted to pulley 15 so that tape 21 reflects the sum...