US Patent: 38,200
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| Printing-machine
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Patentee:
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| William Bullock (exact or similar names) - Pittsburgh, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 14, 1863 |
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Jeff Joslin
Wikipedia biography of Wm. Bullock
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Description: |
| Richard Hoe had already invented the rotary printing press, e.g., patent 5,199, but this famous patent by William Bullock took it an important step further: Bullock's web rotary press used a continuous roll of paper that was fed through the rollers, which eliminated the need to hand-feed individual sheets through the press. Bullock's press was designed for newspaper printing: it printed double-sided, cut the pages apart and then stacked and folded the pages. At the time of the patent it could print up to 12,000 sheets an hour; within a few years that rate had increased to 30,000 sheets an hour. In 1867 Bullock was installing one of his presses in Philadelphia when his leg was caught in the press and crushed. He died nine days later, while his gangrenous leg was being amputated. See also patents 61,996, 100,367, 100,368, and 171,093.According to a history of the R. Hoe Co., which quoted Mr. Hoe: "I had intended using in the cutting cylinders of these machines the peculiar form of stationary knife devised for the web cutting and folding machine built in our experiment room in 1858, but found that it had since been patented in the United States by Mr. William Bullock. It was held in the Patent Office that, as we had never applied for a patent, nor put it into practical use, we had forfeited our right to it, and that Bullock's patent was valid. However, I devised a jumping knife that we used in machines in the United States until Bullock's patent expired in 1880, and then substituted our own knife, which, with a modification of the springs, we are using in our machines today".In late 1881 Bullock's heirs applied to Congress for an extension to this patent (as of 1861, the Commissioner of Patents no longer had the power to extend patents), but it seems that it was not granted. |
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