Browse Prior Art Database

Typing Shield

IP.com Disclosure Number: IPCOM000092483D
Original Publication Date: 1966-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Habick, AB: AUTHOR [+3]

Abstract

The typing shield prevents shadow-printing when a large number of carbon copies are being typed. The shield also serves as a character locator when manually activated.

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Typing Shield

The typing shield prevents shadow-printing when a large number of carbon copies are being typed. The shield also serves as a character locator when manually activated.

Typing shield 1 has aperture 1a which is just large enough to accommodate a single character on spherical type element 2. Shield 1 is mounted on removable card holder 3 so that it normally rests in the position shown. Element 2 is mounted on rocker 4. The latter is pivotally mounted on shaft 5 for movement toward a print position as indicated by arrow 6. The action of element 2 going into the print position causes shield 1 to go toward platen 7 and perform its function of eliminating side, over and under printing.

In its rest position shield 1 is out of the operator's line of vision to the writing line. Shield 1 can be used as a character locator by moving it toward platen 7 so that the print position is defined by aperture 1a. Manually-acutated member 8 is pushed forward toward platen 7 causing shield 1 to pivot toward platen 7. Spring 9 serves to bias member 8 to its rest position as shown. Shield 1 is made of TEFLON*-coated fabric glass. The use of TEFLON prevents the ink from the ribbon from sticking to shield 1. *Trademark of E. I. du Pont de Nemours and Co.

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