Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1975-11-20
1978-09-12
Petrakes, John
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 18DD, 242 43R, 242 45, B65H 5402
Patent
active
041131932
ABSTRACT:
Method of winding conical cross-wound coils at constant thread-feeding velocity, wherein varying winding speeds between the largest and smallest periphery of the coils are compensated for by filling and emptying a controlled thread storage device, which includes filling the thread storage device during a time interval wherein the thread is being guided in a three-dimensionally disposed spiral extending from a given neutral periphery of a coil to the smallest periphery thereof and back, and emptying the thread storage device during a time interval wherein the thread is being guided in a three-dimensionally disposed spiral extending from the given neutral periphery of the coil to the largest periphery thereof and back, the instantanteous length of the stored thread being varied in a wave-shaped substantially sinusoidal manner and the amplitude of the respective wave being proportional to the maximal length of the thread to be stored as required during each thread storing operation; and apparatus for performing the method.
REFERENCES:
patent: 2524623 (1950-10-01), Colombu
patent: 2618441 (1952-11-01), Marcellus
patent: 2950068 (1960-08-01), Rutgers
patent: 3359715 (1967-12-01), Mackie
patent: 3640477 (1972-02-01), Furst
patent: 4002306 (1977-01-01), Raasch
Muller Lothar
Raasch Hans
Lerner Herbert L.
Petrakes John
W. Schlafhorst & Co.
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