Browse Prior Art Database

Cover Hinging System for Typewriter Covers

IP.com Disclosure Number: IPCOM000083926D
Original Publication Date: 1975-Aug-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Alexander, JS: AUTHOR [+3]

Abstract

The illustrated hinge allows a cover to be positioned at any point from completely open to fully closed and remain at that position until manually repositioned, and prevents falling or slamming of a cover if manual restraint is removed during the closing cycle.

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Cover Hinging System for Typewriter Covers

The illustrated hinge allows a cover to be positioned at any point from completely open to fully closed and remain at that position until manually repositioned, and prevents falling or slamming of a cover if manual restraint is removed during the closing cycle.

This hinge consists of a set of three parts which comprise a complete hinge assembly. The three components are: spring steel bracket 17 which is mounted to the housing 12, steel hinge 22 which mounts to the cover 10 and steel stud 24 which is hot upset to form an assembly of the bracket 17 and hinge 22, and it also acts as the pivot for relative radial motion between the two.

This design utilizes two frictional surfaces 16, 18 to obtain the desired results. One surface 16 acts as a detent to hold the cover open through lobe 14, and also provides sufficient spring force to position the top 10 at any point in the upper portion of the range of travel. The other surface 18 together with surface 20 provides additional holding force required for the lower portion of the range of travel. Either of the frictional surfaces 16, 18 can be form adjusted, if necessary, for increased holding force.

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