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Removal of Insulation from Wire

IP.com Disclosure Number: IPCOM000074685D
Original Publication Date: 1971-May-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Angelo, RW: AUTHOR [+2]

Abstract

This apparatus is for the removal of organic insulating material from fine or superfine wire by the controlled application of a stream of hot gas.

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Removal of Insulation from Wire

This apparatus is for the removal of organic insulating material from fine or superfine wire by the controlled application of a stream of hot gas.

Nitrogen supply 10 is coupled to filter 11. The gas output from filter 11 is coupled through gas flow regulator 12 which functions to control the rats of nitrogen gas. The gas flow from regulator 12 passes through serpentine heater 13 that includes tungsten-type heating element 14. Variac 15 functions to regulate the voltage applied to element 14. Heater 13 includes a quartz tube which narrows down to a small diameter orifice at its lowermost portion.

The insulated microwire 16 is positioned beneath the orifice in the quartz tube by threading through opposing glass tube 17. Wire 16 is fed from feed spool 18 to take-up spool 19. Lateral motion of wire 16 is controlled by means of pressure pads 20 positioned between tube 17 an spool 18, as well as between tube 17 and spool 19. Sliding platform 24 serves as a mount for the wire support and spool apparatus.

Electrical contacts 21 are positioned immediately before spool 19 as a part of an electrically conductive path testing circuit which includes buzzer 22 and battery 23. The test circuit is arranged so that contacts 21 will activate buzzer 22 if the circuit is completed via the portion of wire 16 which has the insulative coating removed from a pre-determined portion.

Wire 16 is moved under the stream of hot nitrogen emitted from the orifice...