William Bullock (inventor)

Lore & Background

William Bullock was born in Greenville, New York in 1813. Orphaned at an early age, he was raised by his brother. In his youth, he worked with his brother as a machinist and iron-founder. His fascination with books led him to acquire much knowledge of mechanics. At age 21, he was running his own machinery shop in Savannah, Georgia, where he invented a shingle-cutting machine, but his business went broke when he was unable to market it. While in Georgia, Bullock married Angeline Kimball and had seven children with her. When his wife died in 1850, he married Angeline's sister Emily, who bore him six children.

Bullock returned to New York and designed such devices as a cotton and hay press, a seed planter, and a lathe cutting machine. He also invented a grain drill, which won him a prize from the Franklin Institute in 1849. Shortly after this, he became involved in the newspaper world, and began working as an editor for a Philadelphia newspaper, The Banner of the Union. The paper later moved to Catskill, New York. 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. Bullock's press allowed for continuous large rolls of paper to be automatically fed through the rollers, eliminating the laborious hand-feeding system of earlier presses. The press was self-adjusting, printed on both sides, folded the paper, and a sharp serrated knife that rarely needed sharpening cut sheets with rapid precision. The press could print up to 12,000 sheets an hour; later improvements raised the speed to up to 30,000 sheets an hour.

Reader's Guide

William Bullock's 1863 improvements to the rotary printing press marked a significant advance in printing technology. By enabling continuous rolls of paper to be automatically fed, printed on both sides, folded, and cut, his press dramatically increased speed and efficiency—capable of 12,000 sheets per hour initially, later up to 30,000. This innovation helped meet the growing demand for newspapers and periodicals in the mid-19th century, reducing manual labor and accelerating production. Bullock's work built upon Richard March Hoe's earlier rotary press, but his design introduced practical automation that became foundational for modern high-speed printing. His death in 1867, caused by an accident while adjusting one of his own presses, underscores the dangers inventors sometimes faced with their own machinery. Bullock's patents, including those granted posthumously, reflect his ongoing contributions to printing press mechanics.

Did You Know?

• Bullock was orphaned at an early age and raised by his brother.
• Bullock died from gangrene after his leg was crushed by his own press during an installation for the Philadelphia Public Ledger.

The Web Rotary Printing Press

William Bullock, born in 1813, is remembered primarily for a single mechanical achievement: the invention of the web rotary printing press. This device represented a significant leap in printing technology, and its creation placed Bullock among the industrial innovators of his era. The press was not merely a theoretical concept but a functional machine that entered practical use, as evidenced by the fact that a new unit was later being installed in Philadelphia. The fact that the invention persisted long enough to require installation of additional machines years after its initial creation speaks to its adoption and utility in the printing trade. Bullock's name became permanently attached to this mechanism, and in the broader catalogue of industrial-age inventors, the web rotary press stands as his defining contribution to the world of mechanical printing.

The Philadelphia Installation

Several years after the web rotary printing press had been brought into existence, Bullock found himself present at the installation of a new machine in Philadelphia. It was during this routine-seeming process of setting up the equipment that the accident occurred: his foot was crushed by the machinery. The irony is stark — the very device he had designed, now being put into place in a new location, became the instrument of his injury. The installation context suggests this was not a test run or a demonstration but a practical, commercial deployment of the press. Bullock's proximity to the machine during its setup, whether as a supervisor, an observer, or a participant in the process, placed him within reach of the crushing force. The location, Philadelphia, anchors the event in a specific American city, grounding the tragedy in a concrete industrial setting of the mid-nineteenth century.

Gangrene and the Operating Table

The immediate injury — a crushed foot — might have been survivable on its own, but the wound that followed turned the accident into a fatal sequence. The crushed foot developed gangrene, a condition in which tissue dies and begins to decay, typically as a result of compromised blood supply or infection. In the medical landscape of the 1860s, gangrene was a particularly grim diagnosis, and the standard recourse was amputation. Bullock underwent the surgical procedure to remove the affected limb, but the operation itself proved to be the final event of his life. He died during the amputation, meaning the act intended to save him from the spreading death of the gangrenous tissue became, instead, the moment his own life ended. The timeline from crushed foot to gangrene to the operating table to death compressed what should have been a recoverable industrial accident into a terminal medical crisis.

A Life Bookended by the Machine

William Bullock was born in 1813 and died in 1867, giving him a lifespan of fifty-four years. Within that span, he conceived and brought into the world the web rotary printing press, an invention that would outlive him and continue to serve the printing trade. Yet the same machine that defined his professional legacy also sealed his fate. The sequence of events — invention, years of the press in use, installation of a new unit in Philadelphia, the crushing of his foot, the onset of gangrene, and his death on the operating table — forms a closed narrative in which the creator and his creation are inextricably bound. He did not die in a factory explosion or a laboratory accident; he died in the quiet, procedural context of installing a machine that was already a proven product. The gap of several years between invention and accident underscores that this was not a hasty prototype killing its maker but a mature, deployed technology claiming the life of the man who first imagined it.