Complex sentence: Sometime in 1948, Pond was contacted by Henry Ford who told Pond that the Pond Tractor company was competing with Ford's own tractor line and that he would no longer be able to purchase Ford components for his tractors.
Split into simpler sentences: Sometime in 1948, Pond was contacted by Henry Ford. Ford told Pond that the Pond Tractor company was competing with Ford's own tractor line and that he would no longer be able to purchase Ford components for his tractors.