Apparatus for detecting foreign bodies in a textile lap

Details Apparatus for detecting foreign bodies in a textile lap Apparatus for detecting foreign bodies in a textile lap

1978-01-12

1979-09-18

Newton, Dorsey

Textiles: fiber preparation

Drying

226 1, 226 43, 226 45, D01G 3100

Patent

active

041678036

ABSTRACT:
An apparatus for detecting metallic bodies in a running textile lap performs the steps of generating a high-frequency electromagnetic field; passing the textile lap through the high-frequency electromagnetic field; and deriving a sensor signal as a function of an alteration of the high-frequency electromagnetic field caused by the presence of a metallic body in the lap.

REFERENCES:
patent: 1395877 (1921-11-01), Tillotson
patent: 1427077 (1922-08-01), Molloy
patent: 3092875 (1963-06-01), McLean
patent: 3418697 (1968-12-01), Groce et al.
patent: 3588686 (1971-06-01), Lingmann et al.
Publication "----for Conveyors" , pp. 81-83 of Electronics, Jul. 1949.

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