Browse Prior Art Database

Unwrapping Tool

IP.com Disclosure Number: IPCOM000095814D
Original Publication Date: 1964-Jul-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Acker, GW: AUTHOR

Abstract

It often becomes necessary to unwrap a wire wrap connection due to error or change of circuit. The tool is usually hand operated and comprises a bit similar to that used in wrapping. It is rotated in reverse to that of the wrapping bit and differs in configuration.

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Unwrapping Tool

It often becomes necessary to unwrap a wire wrap connection due to error or change of circuit. The tool is usually hand operated and comprises a bit similar to that used in wrapping. It is rotated in reverse to that of the wrapping bit and differs in configuration.

To form the bit, a piece of tubing 10 is used having an inside diameter slightly larger than the diameter of pin 11 from which wire 12 is to be unwrapped. Using a grinding wheel or the like, a cut is made in the side of tube 10 that extends along a line approximately 30 degrees to the tube's axis, thus forming a V notch
15. Faces 16 and 17 of notch 15 are at right angles to each other at the end of tube 10. This is now held at a slight angle with the face of a grinding wheel to form face 18, which, in turn, forms a shoulder 20 that is higher than point 21.

In unwrapping a wire, the end of the tool is positioned over pin 11 and turned in a direction opposite to that in which the wire was wrapped (see arrow). This brings shoulder 20 into engagement with the end 23 of the wire. Continued rotation of the tool forces the wire into a loop 24 permitting shoulder 20 to peel the wire from the pin without injury to either wire or pin.

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