Advancing material of indeterminate length – Shiftable part allowing hand loading – With shiftable roller
Patent
1976-09-24
1978-04-25
Schacher, Richard A.
Advancing material of indeterminate length
Shiftable part allowing hand loading
With shiftable roller
226176, 226181, B65H 1722
Patent
active
040858804
ABSTRACT:
A planetary electrode-wire feeding device in which the calibrated pushing force exerted on the electrode wire by a pair of feed rollers is automatically adjusted. This automatic adjustment is effected by a cam which is drivingly connected to a drive motor. A housing is operatively drivingly connected to the cam for rotation via a pair of double-armed levers. The housing has a pair of radial bores in which a pair of pistons are respectively reciprocally mounted. Upon a predetermined rotation of the cam, one arm of the double-armed levers is pivoted outwardly and the other inwardly, thereby the pistons are pushed inwardly by the double-armed levers and, due to a wedging action between the levers and the housing, the latter begins to rotate and the electrode wire is pushed forwardly by feed rollers.
REFERENCES:
patent: 1355616 (1920-10-01), Mohn
patent: 3517844 (1970-06-01), Wloszek
Grozdanov Petko Kostadinov
Nemechek Alfred Emmerich
Petrov Peter Dimitrov
Punchev Simeon Georgiev
Samokovliski David Albert
Institute Po Zavaryavane
Schacher Richard A,.
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