Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal
Patent
1983-02-15
1985-11-05
Goldberg, Howard N.
Metal treatment
Process of modifying or maintaining internal physical...
Chemical-heat removing or burning of metal
174 69, 425391, 140140, C21D 132
Patent
active
045511853
ABSTRACT:
A leading end portion (33) of a supply of cordage (31) is clamped to a mandrel (32) such that it is straight, after which a plurality of convolutions of the cordage are wound on the mandrel. The cordage is severed from the supply and a trailing end portion (34) of the wound cordage is clamped to the mandrel in a manner which causes it to be straight and hence suitable for termination with a modular plug (37). The coiled cordage is heated and cooled and is then removed from the mandrel while simultaneously the direction of the helices is reversed. Then the cordage is severed at a predetermined location to produce two retractile cords, for example, one including the leading end portion of the length of wound cordage and a newly formed straight trailing portion. The second cord includes a newly formed straight leading end portion and the initial trailing end portion. The newly formed end portion of each cord is caused to be held in a straight configuration and annealed to cause it to retain that configuration. This facilitates the termination of the newly formed end of each cord and allows automatic cord-making apparatus to be used to make cords of varying lengths.
REFERENCES:
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patent: 2452432 (1948-10-01), Collins
patent: 2920351 (1960-01-01), Hardesty et al.
patent: 3016571 (1962-01-01), Adams
patent: 3151635 (1964-10-01), Levine
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patent: 4375012 (1983-02-01), Cocco et al.
Western Electric Tech Digest, No. 50, Apr. 1978, pp. 13-14, "Straightening End Portions of Retractile Cords", by R. P. Loesch.
Arbes Carl J.
AT&T - Technologies, Inc.
Goldberg Howard N.
Somers E. W.
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