Magnetically controlled wire tensioning device

Details Magnetically controlled wire tensioning device Magnetically controlled wire tensioning device

1984-03-30

1985-05-14

Gilreath, Stanley N.

Winding, tensioning, or guiding

Strand tensioning device

Wheel or pulley

310 93, B65H 5916

Patent

active

045167397

ABSTRACT:
The tension imparted to an advancing strand 11 is regulated by passing the strand about a permanent magnet sheave 13 interposed between a pair of permanent magnet discs 19 and 21. The sheave and discs are axially polarized so that the magnet fields about the sheave are in opposing or repelling relation with the magnetic fields about the discs. By moving (26, 27 and 28) a disc toward or away from the sheave the intensities of the coupled lines of magnetic force are increased or decreased to accordingly vary the magnetic drag placed on the sheave and thus the tension imparted to the advancing strand 11.

REFERENCES:
patent: 2068820 (1937-01-01), Sarazin et al.
patent: 2591463 (1952-04-01), Parker
patent: 2607820 (1952-08-01), Judd et al.
patent: 2624527 (1953-01-01), Von Kohorn
patent: 2632859 (1953-03-01), Bessiere
patent: 2688789 (1954-09-01), Duryee
patent: 3072361 (1963-01-01), Fuller
patent: 3133746 (1963-12-01), Steen
patent: 3267310 (1966-08-01), Ireland
patent: 3797775 (1974-03-01), White

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