Browse Prior Art Database

Walking Pivot Cover Hinge

IP.com Disclosure Number: IPCOM000088667D
Original Publication Date: 1977-Jul-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Mott, WE: AUTHOR

Abstract

On typewriters it is often necessary to be able to operate the feed roll release lever and the platen detent release lever when the top cover is raised. To accomplish these requirements, it is naturally required that the top cover, in its raised position, be above these levers with sufficient height to clear the operator's fingers.

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Walking Pivot Cover Hinge

On typewriters it is often necessary to be able to operate the feed roll release lever and the platen detent release lever when the top cover is raised. To accomplish these requirements, it is naturally required that the top cover, in its raised position, be above these levers with sufficient height to clear the operator's fingers.

The purpose of this device is to provide a hinging mechanism which will (1) fit into the very confined space allowed, (2) raise the top cover above the center cover sufficiently high to allow operation of the levers, and (3) restrain the top cover in such a way as to prevent it from slamming shut.

The mechanism consists of a hinge support bracket 10 which is secured to mounting bosses in the center cover (not shown) by mounting screws 12. A hinge arm 14 is then attached to the hinge support bracket by a shouldered stud 16 whose tenon 18 is riveted into the hole 20. A sleeve 22 is captured on the shouldered stud 16 between the hinge support bracket 10 and the hinge arm 14. This serves to properly position the hinge arm 14 so that the teeth 22 on the hinge arm 14 will engage the slots 24 so the hinge support bracket 10. A hinge guide assembly 26 is permanently secured to the hinge support bracket 10 by spot welding the arms 28 and 30 to the bracket. The guide assembly 26 is made by sandwiching the guide bracket between two friction plates 32.

A clamp 34 is then screwed to the hinge arm 14 with the small tab 36 o...