Complex sentence: Barton has found a job as a pilot for a millionaire with an aircraft factory named George Lambert and when Doc brings a model of his invention, the two send their model aeroplane to buzz Lambert on the golf course.
Split into simpler sentences: Barton has found a job as a pilot for a millionaire with an aircraft factory named George Lambert. When Doc brings a model of his invention, the two send their model aeroplane to buzz Lambert on the golf course.