Patent ID: 9562308
Date: 2017-02-07
CPC Classifications: B65H,D03D,D04B

Claim:
1. A device for feeding yarn to a textile machine, comprising: a main body defining an entry portion and an exit portion for the yarn; a rotatable drum associated with said main body, said rotatable drum configured for winding said yarn received from said entry portion; a motor associated with said main body, the motor connected to said drum to rotate said drum; a control member configured to control said motor and regulate said motor's torque and velocity said exit portion being selectively switchable between a first configuration in which said exit portion defines a free exit section for the yarn, through which the exiting yarn undergoes a complete revolution about a rotation axis R of the drum defining a closed path about a rotation axis of said drum, and a second configuration in which said exiting yarn undergoes an incomplete revolution about the rotation axis R of the drum defining an open path; wherein said control member is configured to control and regulate the velocity of said motor for the purpose of maintaining a stock of yarn on the drum when said exit portion is in the first configuration and instead maintaining the tension of the yarn being fed from the device to the textile machine constant and independent of the operation of the textile machine when said exit portion is in the second configuration.