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US 4,235,362 AGranted
Wire-feeding apparatus
AssigneePfizer Inc.
InventorNicholas Hubenko
Life of this patent
Estimating the term…
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AssigneePfizer Inc.
InventorNicholas Hubenko
Estimating the term…
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.
A wire-feeding apparatus for the controlled feeding of wire comprising a set of two opposed aligned rollers mounted on substantially parallel axes of rotation and with peripheral edges close to each other, one of said rollers being a driven feed roller and the other of said rollers being a pinch roller, drive means connected to said feed roller for rotating it at a controlled rate, both of said rollers having indented V-shaped peripheral cross sections, said peripheral cross section of said feed roller having a relatively sharp obtuse angle, said peripheral cross section of said pinch roller having a relatively shallow obtuse angle, said angles accommodating a wide range of wire diameters, said peripheral cross section of said feed roller having a pair of sloped walls, said walls being serrated to facilitate gripping said wire, and resilient means urging said peripheral edges of said rollers together for gripping said wire between them.
A wire-feeding apparatus for the controlled feeding of wire comprising a set of two opposed aligned rollers mounted on substantially parallel axes of rotation and with peripheral edges close to each other, one of said rollers being a driven feed roller and the other of said rollers being a pinch roller, drive means connected to said feed roller for rotating it at a controlled rate, both of said rollers having indented V-shaped peripheral cross sections, said peripheral cross section of said feed roller having a relatively sharp obtuse angle, said peripheral cross section of said pinch roller having a relatively shallow obtuse angle, said angles accommodating a wide range of wire diameters, said peripheral cross section of said feed roller having a pair of sloped walls, said walls being serrated to facilitate gripping said wire and provided with a groove at their junction whereby debris is carried away from said walls, and resilient means urging said peripheral edges of said rollers together for gripping said wire between them.
A wire-feeding apparatus for the controlled feeding of wire comprising a set of two opposed aligned rollers mounted on substantially parallel axes of rotation and with peripheral edges close to each other, one of said rollers being a driven feed roller and the other of said rollers being a pinch roller, said feed roller comprising circular outer flanges and inner disks with beveled edges, with detachable fasteners holding said flanges and disks together, to facilitate disassembly and reassembly, drive means connected to said feed roller for rotating it at a controlled rate, both of said rollers having indented V-shaped peripheral cross sections, said peripheral cross section of said feed roller having a relatively sharp obtuse angle, said peripheral cross section of said pinch roller having a relatively shallow obtuse angle, said angles accommodating a wide range of wire diameters, said peripheral cross section of said feed roller having a pair of sloped walls, said walls being serrated to facilitate gripping said wire, and resilient means urging said peripheral edges of said rollers together for gripping said wire between them.
Dependencies are inferred from the claim text.