Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1980-08-29
1982-04-27
Gilreath, Stanley N.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 18R, 242 36, 242 462, 242 49, 340682, B65H 5442, B65H 6300
Patent
active
043266770
ABSTRACT:
A high speed textile spindle assembly is provided which includes a spindle adapted to support a yarn package, a spindle support housing, and bearing means rotatably mounting the spindle on the support housing and including a relatively elastic, electrically nonconductive member, and such that the spindle is adapted to be operated at a rotational speed above its critical speed to thereby avoid vibrational resonant conditions. A monitoring circuit is provided for detecting metal to metal contact between the spindle and support housing, which would be indicative of a failure of the elastic member, and which could result in operation at its critical speed and damage to the assembly from the resulting excessive vibrations. Upon the detection of such contact, the monitoring circuit initiates a responsive electrical signal, which preferably terminates rotation of the spindle. The monitoring circuit also includes provision for monitoring its own proper functioning.
REFERENCES:
patent: 3042324 (1962-07-01), Kinney
patent: 3176286 (1965-03-01), Dschen
patent: 3508241 (1970-04-01), Potter
patent: 3917182 (1975-11-01), Lenk
Salm Dieter
Schimmels Bernd
Schippers Heinz
Barmag Barmer Maschinenfabrik
Gilreath Stanley N.
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