Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1979-01-10
1980-04-22
McCarthy, Edward J.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 7551, B65H 2522, B65H 5900
Patent
active
041991184
ABSTRACT:
A brake control system for an unwinder is provided which measures the line speed of the moving web and the rpm of the roll and produces electrical output signals proportional to each which signals are operated upon to produce a main brake control signal to apply a braking force proportional to the roll diameter as it is constantly decreasing, and a further output signal which is proportional to the energy in the roll so that additional braking force modification will occur during acceleration and deceleration of the web in order to maintain essentially constant web tension. An additional feedback from a web tension measuring device is also provided which adjusts the braking force to produce an actual tension equal to the desired tension which has been included in the main braking force output signal proportional to the roll diameter.
REFERENCES:
patent: 2983464 (1961-05-01), Fuller
patent: 3049313 (1962-08-01), Jordan
patent: 3249316 (1966-05-01), Loase
patent: 3936008 (1976-02-01), Crum
patent: 4015794 (1977-04-01), Meihofer
Browning Gerald F.
Tetro Richard S.
McCarthy Edward J.
The Black Clawson Company
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