Variable speed unwind controller drum

Details Variable speed unwind controller drum Variable speed unwind controller drum

1974-02-27

1976-02-17

Burr, Edgar S.

Printing

Rolling contact machines

Rotary

74354, 101225, 226178, 242 7544, B65H 7700, B65H 2318, B41F 1302

Patent

active

039384373

ABSTRACT:
The unwind controller drum for metering web material into a web processing machine is positively driven by a positive, fixed-ratio drive train. Several drive ratios are selectively available, each differing only slightly from another to provide minute changes in the drive ratio from the drive to the unwind drum. The changes in drive speed are generally less than .05% to provide positively determined, finite adjustment of the rate that the web material is metered into the web processing equipment.

REFERENCES:
patent: 3026011 (1962-03-01), Grass
patent: 3038678 (1962-06-01), Papst
patent: 3049078 (1962-08-01), Smith, Jr.
patent: 3051012 (1962-08-01), Sato
patent: 3249316 (1966-05-01), Loase
patent: 3418932 (1968-12-01), Macchoine et al.
patent: 3464610 (1969-09-01), Koning
patent: 3564935 (1971-02-01), Vigneri
patent: 3580097 (1971-05-01), Dalen
patent: 3684147 (1972-08-01), Ysbrand et al.
patent: 3713420 (1973-01-01), Pfaffle

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