Rockwell was always an engineer at heart; He received several patents, such as one in 1926 for an "improved double reduction and reversing differential axle construction especially useful for bus axles."
Rockwell selalu menjadi insinyur di hati; Dia menerima beberapa paten, seperti satu pada tahun 1926 untuk "peningkatan reduksi ganda dan pembalikan konstruksi poros diferensial sangat berguna untuk as roda."