Advancing material of indeterminate length – By orbitally traveling material-engaging surface – Comprising rotary pinch pair
Patent
1979-03-21
1980-11-25
Christian, Leonard D.
Advancing material of indeterminate length
By orbitally traveling material-engaging surface
Comprising rotary pinch pair
226184, 226187, 226193, B65H 1722
Patent
active
042353629
ABSTRACT:
Tubular wire comprising a calcium-containing solidified core in a thin steel sheath is fed between successive sets of resiliently-engaging pinch and feed rollers having aligned V-shaped indented peripheries. A wide range of wire diameters from about 3 to 8 mm are accommodated between a feed roller having an indented relatively sharp obtuse angle of about 120.degree. and a pinch roller having an indented relatively shallow obtuse angle of about 150.degree.. The peripheral walls of the feed rollers have staggered serrations for gripping the wire and a grooved channel between them for removing debris. The pinch rollers of a pair of successive sets are positioned slightly outboard of the feed rollers to keep the wire straight. Simultaneous feeding of two or more wires is provided through a plurality of sets having a common axis of rotation for the feed rollers. A slight drag is imposed on the supply reel as the wire is fed, and the supply reel is stopped just before the feed rollers stop to prevent the wire from unreeling between the supply reel and the feed rollers.
REFERENCES:
patent: 2251291 (1941-08-01), Reichelt
patent: 2668615 (1954-02-01), Sampatacos
patent: 3022929 (1962-02-01), Myers et al.
patent: 3331545 (1967-07-01), Oliveri
patent: 3430832 (1969-03-01), Meyer
patent: 3672655 (1972-06-01), Carter
patent: 3815837 (1974-06-01), Guthrie
Christian Leonard D.
Pfizer Inc.
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