Browse Prior Art Database

Typewriter Interword Spacing Mechanism

IP.com Disclosure Number: IPCOM000093528D
Original Publication Date: 1967-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Flesch, RL: AUTHOR [+2]

Abstract

Interword spacing can be accomplished in a single element typewriter. This is effected by inducing a print operation to cause normal letter feed escapement while inhibiting actual print output by selection of a low-velocity nonprint cam through devices similar to those shown in U. S. Patent 3,239,049.

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Typewriter Interword Spacing Mechanism

Interword spacing can be accomplished in a single element typewriter. This is effected by inducing a print operation to cause normal letter feed escapement while inhibiting actual print output by selection of a low-velocity nonprint cam through devices similar to those shown in U. S. Patent 3,239,049.

In a print operation, type element 1 is ordinarily detented by blades 2 and 3 prior to impact. However, excess wear considerations make it undesirable to detent element 1 when interword spacing is accomplished by selection of a low- velocity cam.

Finger 4 is provided to inhibit operation of blades 2 and 3 during interword space operations. Finger 4 normally lies in the operating path of detent cam follower 5. Normal print operations are accompanied by a relatively large pivotal movement of rocker 6. The latter carries finger 4 out of the patch of follower 5 allowing it to move to the right under the influence of spring 7 and control of detent cam 8 just prior to print detent. Rocker 6 is not pivoted sufficiently in a nonprint operation to remove finger 4 from the path of follower 5 and detenting is inhibited.

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