Patent ID: 7161272

Claim:
A wire feeder for an electric arc welder comprising a set of feed rolls driven by a DC motor with a commutator, first and second opposite polarity leads receiving power to drive said motor, and having a first brush at a given position on said commutator and connected to said first lead, a second brush circumferentially spaced from said first brush a first annular distance around said commutator and connectable to said second lead to cause said motor to rotate at a first speed to drive said rolls at a first speed, a third brush circumferentially spaced from said first brush a second annular distance around said commutator and connectable to said second lead to cause said motor to rotate at a second speed to drive said rolls at a second speed, and a switching circuit with an operative condition to connect said second lead to only a selected one of said second and third brushes to the exclusion of the other one of said second and third brushes.