Browse Prior Art Database

Double Concentric Wrap Bit

IP.com Disclosure Number: IPCOM000096878D
Original Publication Date: 1962-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Paolino, RJ: AUTHOR

Abstract

The wrapping bit for wire performs two consecutive wrapping operations, as when connecting both ends of a wire between two terminals, without reloading the bit after each wrapping operation.

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Double Concentric Wrap Bit

The wrapping bit for wire performs two consecutive wrapping operations, as when connecting both ends of a wire between two terminals, without reloading the bit after each wrapping operation.

The bit consists of two concentric, cylindrical shells, each having an axially extending groove in its outer surface. The shells are freely rotatable with respect to each other and with respect to an outer sleeve into which they are inserted. Drive devices (not shown) independently rotate the inner and outer shells.

In operation, a length of wire which is already selectively stripped at both ends is inserted, endwise, into the grooves in both shells. The base of the stripped wire at one end of the length of wire is exposed as shown in A. The wrap tool, comprising the bit, is moved over a terminal pin. Then, the inner shell is rotated with respect to the outer shell. This rotation causes wire to be wrapped around the pin as shown in B.

After the wire is exhausted from the inner groove, the tool is moved to a second terminal, while wire pays out from the outer groove. This continues until the stripped wire at the opposite end of the wire length begins to emerge from the outer groove (C). In a manner similar to the first wrapping operation, the outer shell is now rotated, with respect to the inner one. This causes the wire to be wrapped around the second terminal as shown in D.

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