 In 1853, Bullock began working on a hand-turned wooden printing press that had a self-feeder, an idea that laid the foundation for his later presses, one of which he designed in 1860 for the national publication "Frank Leslie's Illustrated Weekly".Bullock moved to Pittsburgh, and in a couple of years, perfected a printing press called the web rotary press.Richard March Hoe had invented the rotary press in 1843, but Bullock's press was an improvement over Hoe's design.