Method and apparatus for providing constant magnetic tape tensio

Details Method and apparatus for providing constant magnetic tape tensio Method and apparatus for providing constant magnetic tape tensio

1977-06-13

1978-06-06

Christian, Leonard D.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

360 71, G03B 104, G11B 1532

Patent

active

040931501

ABSTRACT:
An improved method and apparatus for generating constant tape or web tension in a transport system of the type wherein the supply and take-up reels are simultaneously driven by surface engagement with a capstan. Uniform tension is maintained throughout the entire tape pack by balancing the supply reel peripheral velocity rate of change occurring during the transport operation to the greater, but correspondingly sloped, take-up reel peripheral velocity rate of change. This balancing of the peripheral velocity of the supply and take-up reels is achieved through utilization of a constant braking system that combines the effects of torque and bias forces acting on the supply reel so as to produce constant tape tension in the take-up reel.

REFERENCES:
patent: 3370803 (1968-02-01), Newell
patent: 3921933 (1975-11-01), Rotter et al.
patent: 3951356 (1976-04-01), Davis, Jr.
patent: 3960342 (1976-06-01), Furst
patent: 4018402 (1977-04-01), Burdorf
patent: 4049216 (1977-09-01), Burdorf et al.

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