Browse Prior Art Database

Positive Type Alignment

IP.com Disclosure Number: IPCOM000095961D
Original Publication Date: 1964-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 78K

Publishing Venue

IBM

Related People

Emig, MB: AUTHOR

Abstract

The arrangement clamps a type bar of a typewriter and positively guides the type face to proper position. A more accurate positioning is obtained than when the type bar is guided by side walls.

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Positive Type Alignment

The arrangement clamps a type bar of a typewriter and positively guides the type face to proper position. A more accurate positioning is obtained than when the type bar is guided by side walls.

In particular, type bar 1 forming one element in a type basket not shown, moves to platen 3 in the usual manner. The aligning devices are jaws 5 and 7 and jaw closing plate 9. In the open position, jaws 5 and 7 present substantial clearance to depending ear 11 in type bar 1.

In operation, ear 11 of type bar 1 enters the relatively wide opening between jaws 5 and 7 regardless of imperfections in tolerances. The lower part of type bar 1 contacts the jaw closing plate 9 at about the same time. Since type bar 1 is in motion toward platen 3, plate 9 is brought in contact with jaws 5 and 7. Continued motion pivots jaws 5 and 7 at their fixed sides so that they close on ear 11.

Alignment of the printed image of the type face can be to close specifications, since plate 9 provides a link to jaws 5 and 7 which can be used to bring the jaws tightly together. For return to the normal position, type bar 1 and plate 9 are spring biased, while jaws 5 and 7 are made of spring steel and positioned in the open posture shown. The wide area of plate 9 functions with each of the several type bars in the manner above described.

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