Advancing material of indeterminate length – Shiftable part allowing hand loading – With shiftable roller
Patent
1978-06-30
1980-06-03
Mautz, George F.
Advancing material of indeterminate length
Shiftable part allowing hand loading
With shiftable roller
226176, 226187, B65H 5110
Patent
active
042057710
ABSTRACT:
An electrode-wire feeding device in which the calibrated pushing force exerted on the electrode wire by a pair of rollers is automatically adjusted. This automatic adjustment is effected by a guide cone having an internally threaded bore which is connected to a drive motor. A housing having a hollow cylindrical externally threaded portion is adapted to be threadably engaged with the guide cone with which it is axially aligned. The housing has a pair of parallel bores the axes of which lie in a plane which is perpendicular to the feed direction of the electrode wire which is fed through the guide cone and the housing. A pair of pistons are movably mounted in the pair of bores and support a pair of rollers which are adapted to contact the electrode wire and impart a pushing and guiding force thereto. The pistons are connected to each other by a coil spring. A pair of double-armed levers are pivotally mounted on the housing. One arm of each lever is in contact with the piston and the other arm is in contact with the guide cone. The pushing and guiding force exerted by the rollers on the electrode wire is adjusted in accordance with the relative position assumed by the double-armed levers and the guide cone.
REFERENCES:
patent: 3014519 (1961-12-01), Wright
patent: 3684152 (1972-08-01), Boden
patent: 3738555 (1973-06-01), Karnes et al.
Grozdanov Petko K.
Nemechek Alfred E.
Petrov Peter D.
Punchev Simeon G.
Samokovliski David A.
Institule Po Zavaryavane
Mautz George F.
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