Advancing material of indeterminate length – With material-responsive control means – To regulate longitudinal movement of material
Patent
1976-03-12
1977-05-31
Schacher, Richard A.
Advancing material of indeterminate length
With material-responsive control means
To regulate longitudinal movement of material
226117, 226119, B65H 2322
Patent
active
040264505
ABSTRACT:
An apparatus for conveying elongated flexible material such as metal strips, wire and tubes by means of rotating shafts in a processing container holding a treatment-fluid for treatment of the material chemically, electrolytically, by pickling, deposition and similar processes, provides for the means of: coiling the material, imparting the coiled material the shape of a helix having a plurality of loops; causing at least a partial immersion of the loops of the helix in the treatment-fluid; advancing the helix in the said container at an advance speed; controlling the entry speeds of the helix relative to a predetermined speed withdrawal of the helix from the container.
In a preferred and more efficient mode of treatment, the inlet speed of the helix exceeds the exit speed with a consequent slow and progressive increase of the length of the helix immersed in the treatment-fluid at a time in a first phase of the operation.
In an additional improvement of the apparatus means are provided to temporarily lower the inlet speed of the helix. Optimum speed limits are identified. Improved means are provided to subject the progress of the loops within the container from a decrease in advance down to momentary stops to control also the size of the loops. The helix is imparted forward and backward directed wave patterns of controllable amplitudes, durations and frequencies with superimposed oscillations in three orthogonal directions, resulting in optimum desirable treatment-fluid exposures of the loops.
REFERENCES:
patent: 2048182 (1936-07-01), Ybarrondo
patent: 3049308 (1962-08-01), Lang
Munz Otto John
Schacher Richard A,.
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