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Browse Prior Art Database

Typing Shield

IP.com Disclosure Number: IPCOM000096342D
Original Publication Date: 1963-Apr-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Hosey, RE: AUTHOR

Abstract

The device prevents shadow-printing when a large number of carbon copies is being typed. A transparent plastic shield 1 is mounted in holder 2 and is reciprocated between a lower concealed position and an upper printing position.

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Typing Shield

The device prevents shadow-printing when a large number of carbon copies is being typed. A transparent plastic shield 1 is mounted in holder 2 and is reciprocated between a lower concealed position and an upper printing position.

Shield 1 has an aperture la which is just large enough to accommodate a single character on a spherical type element 3. Type element 3 is mounted on rocker 4 which is pivotally mounted on shaft 5 for movement toward a rest position as indicated by arrow 7. Type element 3 is first rotated and tilted in order to select a particular character for printing.

The actuation of the rocker 4 results in movement of arm 8 which rests on the rocker at 8a. Arm 8 is pivotally mounted on shaft 9 and normally maintained in a lowered position b spring 10. During the course of printing, the movement of rocker 4 to its uppermost position results in the upward movement of the right end of arm 8. Shield 1 is mounted for reciprocation on guide rod 11 and is attached to arm 8 at pivot point 12. Shield 1 is thus moved upwardly into position during printing.

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