Winding – tensioning – or guiding – Strand unwinding device
Patent
1990-05-09
1991-08-20
Gilreath, Stanley N.
Winding, tensioning, or guiding
Strand unwinding device
2421298, 242147R, B65H 5906, B65H 4902
Patent
active
050407414
ABSTRACT:
A method and apparatus for establishing and maintaining a selected tension on ultrafine wire being uncoiled over the end of a spool of such wire. In one embodiment, the apparatus includes a dish having outwardly-extending filaments which engage the wire as it is uncoiled over the end of a spool of wire. In another embodiment, the apparatus incudes a disk having an arm which engages and constrains the wire as it is uncoiled over the end of a spool of wire. A braking mechanism which slows rotation of the disk is disengaged from the disk by a coiled compression spring. A cable connected to the braking mechanism and a tension spring applies a preset compression force to the spring. This force may be adjusted by varying the expansion of the tension spring. The compression force exerted by the cable against the spring is reduced as tension increases on the uncoiling wire by an arm supported pulley which supports the uncoiling wire and moves the cable.
REFERENCES:
patent: 3023979 (1962-03-01), Megens et al.
patent: 3972489 (1976-08-01), Kovaleski
patent: 3990652 (1976-11-01), Brown
patent: 4508290 (1985-04-01), Bauer
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