Browse Prior Art Database

Low Inertia Unspooling Device

IP.com Disclosure Number: IPCOM000088004D
Original Publication Date: 1977-Apr-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Houser, DE: AUTHOR [+2]

Abstract

The problem of unspooling wire with high acceleration from a high-inertia spool is solved by utilizing a fixed spool concept with a rotating wire pick-up bail.

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Low Inertia Unspooling Device

The problem of unspooling wire with high acceleration from a high-inertia spool is solved by utilizing a fixed spool concept with a rotating wire pick-up bail.

As shown in the figure, as the wire is pulled out of the wire holder 11, a wire pick-up bail 13 rotates around the spool 11. A spring-loaded friction brake 15 is used to control the tension in the wire and to control the acceleration and deceleration of the wire pick-up bail. The end of the wire pick-up bail rotates through fixed bearings 17 to a wire output 19. Using this concept, the wire pick- up bail can be made with relatively low inertia, eliminating the need for a dancer roller or similar device to limit the tension in the wire during acceleration. Furthermore, this concept allows an electrical connection to be made to the terminal end of the wire much more easily than with a rotating spool concept.

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