Title: Apparatus for level winding tubing

Abstract: Level winding is accomplished by rotating a reel with sufficient torque to wind material on the reel while traversing the reel a predetermined precise fractional part of the width of the material wound for each increment of revolution of the reel so that the reel is traversed precisely the width of the material wound plus a precise space between adjacent turns, if desired, during each revolution of the reel. Pulses indicative of the extent of rotation of the reel are transformed, by dividing, into pulses indicative of both the extent of rotation of the reel and the desired distance between centers of adjacent turns of the material wound onto the reel. The pulses rotate a first synchrotransducer electrically connected to a second synchrotransducer which is driven in response to traverse of the reel. An error signal resulting from any non-synchronism of the synchrotransducers is used to operate a servo-valve which changes the rate of traverse in a direction to reduce the error signal.

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Other info:

Inventors: Ruhl, Robert C. (Cleveland Heights, OH, US)
Johnson, James E. (Southfield, MI, US)

Application Number: 573761
Filing Date: 1975-05-01
Publication_date: 1976-09-07
Assignee: Chase Brass and Copper Co., Inc. (Cleveland, OH)
Primary Class(es): 242/481 242/484, 242/485.5
Other Classes:
US Patent Ref:

3109606	Nov, 1963	Kubilos	242/158.
3820729	Jun, 1974	Springer et al.	242/158.
3822831	Jul, 1974	Marcum	242/158.

Other Refs:
Primary Examiner: Phillips, Charles E.
Assistant Examiner:
Attorney: Sniado; John L., Kruger; Walter