Winding – tensioning – or guiding – Strand unwinding device
Patent
1983-04-04
1985-11-12
Christian, Leonard D.
Winding, tensioning, or guiding
Strand unwinding device
57354, B65H 4900, B65H 6904
Patent
active
045523207
ABSTRACT:
Snarls are formed at winding machines and the like when the thread tension is reduced. By reducing the angle .alpha. which the thread forms with the end surface or face of the delivery bobbin or spool the friction between the thread and the bobbin edge can be increased to such an extent that no thread coils or turns can disengage from the surface of the delivery bobbin and become snarled even when the thread tension decreases. The reduction in the angle .alpha. may be achieved by lowering a thread guide eye towards the delivery bobbin, by lifting the delivery bobbin or by deflecting the thread at an extension or protection provided at the bobbin. Upon deflecting the thread at the extension a thread reserve can be provided by applying thread turns at the extension in a direction opposite to the thread turns wound on the bobbin and which thread reserve can be eliminated in a simple manner by withdrawing the same as a whole or in sections.
REFERENCES:
patent: 3057577 (1962-10-01), Ruhl
patent: 3099418 (1963-07-01), Schustack
patent: 3124316 (1964-03-01), O'Brien et al.
patent: 3343361 (1967-09-01), Wurmli
patent: 3648940 (1972-03-01), Meredith
patent: 3823539 (1974-07-01), Hart
Christian Leonard D.
Kleeman Werner W.
Maschinenfabrik Schrarer AG
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