Engine driven welder

A welding machine, comprising:

• a chassis structure;
• a welding power supply that generates a welding waveform during a welding operation;
• an internal combustion engine;
• a generator operatively connected to the welding power supply to supply electrical energy to the welding power supply, wherein the generator comprises a rotor shaft driven by the internal combustion engine, and an end casting located at an end of the generator opposite the internal combustion engine;
• a rotary screw compressor mounted to the end casting of the generator;
• a selectively engageable pulley that couples the rotor shaft to the rotary screw compressor to selectively drive the rotary screw compressor by the rotor shaft;
• and
• a vibration isolator that isolates both of the generator and the rotary screw compressor from the chassis structure,
• wherein the end casting includes a rotor shaft bearing that supports the rotor shaft, and further wherein the vibration isolator is attached to the end casting.

A welding machine, comprising:

• a welding power supply that generates a welding waveform during a welding operation;
• an internal combustion engine;
• a generator operatively connected to the welding power supply to supply electrical energy to the welding power supply, wherein the generator comprises a rotor shaft driven by the internal combustion engine, and an end casting located at a distal end of the generator opposite the internal combustion engine, wherein the end casting includes a rotor shaft bearing that supports the rotor shaft;
• a rotary screw compressor mounted to the end casting of the generator;
• and
• a clutch mechanism on the rotary screw compressor that couples the rotor shaft to the rotary screw compressor to selectively drive the rotary screw compressor by the rotor shaft.