Apparatus for regulating pulsatory operation of an electromagnet in a circular knitting machine

摘要

Apparatus for regulating the pulsating operation of electromagnet control means for selecting the appropriate knitting instrumentalities comprising a main source of D.C. current for activating the electromagnet. The source is provided with circuit means for causing a rapid current rise in the winding of the electromagnet, circuit means for thereafter maintaining the current in said winding at a constant level for a predetermined interval and means for subsequently rapidly dropping the current in said winding on the expiration of the predetermined interval.