Advancing material of indeterminate length – Plural material-moving means – With intermittent material-mover
Patent
1987-08-05
1989-08-15
Werner, David
Advancing material of indeterminate length
Plural material-moving means
With intermittent material-mover
242 57, G65H 2000, G65H 2700
Patent
active
048566926
ABSTRACT:
A feeding apparatus for feeding a material from a material supply to a further apparatus, particularly a packaging apparatus. The apparatus comprises a storage buffer for storing an amount of the material, a first feed arrangement for feeding the material from the material supply to the storage buffer, and a second feed arrangement for feeding the material from the storage buffer to the further apparatus. The storage buffer comprises a plurality of movable rollers and a plurality of fixed rollers disposed above the movable rollers. The material is wound alternately between the fixed and movable rollers. The movable rollers are movable toward the fixed rollers by the tension in the material, and are movable away from the fixed rollers under the influence of gravity. This enables the material to be fed continuously to the further apparatus during an interruption of the material supply. The storage buffer further comprises a carriage to which the movable rollers are mounted, the carriage being movable with the movable rollers. A guide arrangement is provided for guiding movement of the carriage, and the guide arrangement is adapted to maintain said carriage in a substantially constant orientation during movement toward and away from the fixed rollers. This serves to maintain a substantially uniform tension in the material in the storage buffer.
REFERENCES:
patent: 3669375 (1972-06-01), Bruton
patent: 3826442 (1974-07-01), Bethke
patent: 3975063 (1976-08-01), Mahotka et al.
patent: 4204180 (1980-05-01), Usui et al.
patent: 4526638 (1985-07-01), Clements
Olevsky Howard
Scola, Jr. Daniel A.
Werner David
William R. Warner & Co. Limited
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