Browse Prior Art Database

Character Selection Latch Lock On Spring

IP.com Disclosure Number: IPCOM000076161D
Original Publication Date: 1972-Jan-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Booth, WM: AUTHOR

Abstract

In a printer character selection mechanism having a solenoid latch drive, premature actuation of a solenoid for the next character selection will result in a selection latch being disengaged from the latch bail. When this occurs, an incorrect combination of latches will be picked up by the latch bail and an incorrect character will be printed.

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Character Selection Latch Lock On Spring

In a printer character selection mechanism having a solenoid latch drive, premature actuation of a solenoid for the next character selection will result in a selection latch being disengaged from the latch bail. When this occurs, an incorrect combination of latches will be picked up by the latch bail and an incorrect character will be printed.

To insure that the correct latches for the present character are picked up by the latch bail, even though a solenoid is prematurely actuated for the next character, a lock-on spring 1 as shown in Fig. 1 is left to provide one of the signals for a selected character, spring 1 will restrain latch 3 and premature actuation of solenoid 5 will not cause link 4 to pop latch 3 off of bail 2. Even though solenoid 5 has been prematurely activated, until bail 2 and latch 3 have been restored to the right, the proper selection for the next character will not be made. With the restoration of bail 2 and latch 3, solenoid 5 which remains activated will pull latch 3 up, as shown in Fig. 2.

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