US Patent 7624908 Welding wire feeder and connection apparatus

Welding wire feeders are disclosed for providing welding wire and electrical power to a welding torch in a welding system, in which an input is provided including an input connector integrated into a switching device of the wire feeder or coupled thereto directly or through a short cable. The input connector includes a cavity to receive wire from a power source cable with a clamping device being provided for selectively clamping the cable wire to the connector or releasing the wire therefrom using only simple tools.