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Combined Right and Left Wire Unwrap Tool

IP.com Disclosure Number: IPCOM000096636D
Original Publication Date: 1963-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Adams, JE: AUTHOR

Abstract

Many electrical connections are of the solderless or wire-wrapped type. Some wraps are made to the right, clockwise, and others to the left, counterclockwise, depending on the wrapping tool used. At times it is necessary to unwrap a connection and this requires an unwrap bit corresponding to the wrap used. There are tools one end of which unwraps a right-hand wrap and the other end unwraps a lefthand wrap. However, this necessitates the trying of the wrap with one end and, if it is not the correct one, the other end must then be tried resulting in loss of time.

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Combined Right and Left Wire Unwrap Tool

Many electrical connections are of the solderless or wire-wrapped type. Some wraps are made to the right, clockwise, and others to the left, counterclockwise, depending on the wrapping tool used. At times it is necessary to unwrap a connection and this requires an unwrap bit corresponding to the wrap used. There are tools one end of which unwraps a right-hand wrap and the other end unwraps a lefthand wrap. However, this necessitates the trying of the wrap with one end and, if it is not the correct one, the other end must then be tried resulting in loss of time.

This tool has a bit 10 secured in handle 11 by set screw 12. Bit 10 has an axial opening or bore 14 to accommodate the pin from which the wire is to be unwrapped. The depth of bore 14 is such that it limits the extent to which the tool is placed on pin 15. This prevents damage to the associated circuit board. The end of bit 10 about bore 14 is ground to form plane surface 16 leaving projecting portion 17 with horns 18 and 20. Groove 21 in each side of the portion 17 leads rearward on bit 10 in a spiral that ends equidistant from horns 18 and 20.

With bit 10 placed over pin 15 and rotated into the plane of the paper, horn 18 engages the end of wire 22 and guides it into groove 21 thus peeling the wire off pin 15. If the wrap is made in the opposite direction, horn 20 engages the end of the wire, when the tool is rotated out of the plane of the paper. Thus, a wire whe...