Manufacturers Index - Geo. S. Woodruff
Geo. S. Woodruff
Toronto, ON, Canada
Manufacturer Class:
Steam and Gas Engines
This page contains information on patents issued to this manufacturer.
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USPTO's for finding information on machinery patents.
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173,032
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Feb. 01, 1876
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Improvement in steam-cylinder lubricators
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Elijah McCoy |
Ionia, MI |
This patent was improved in the inventor's subsequent patent 179,585. See also his first patent, 129,843.
The inventor was born in Canada to fugitive slaves from Kentucky. He studied in Scotland and was certified as a mechanical engineer, then rejoined his family who in the meantime had moved to Ypsilanti. Unable to find work worthy of his skills, he worked in his home machine shop, ultimately obtaining 57 US patents, most of them related to steam-engine lubricators. |
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179,585
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Jul. 04, 1876
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Improvement in steam-cylinder lubricators
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Elijah McCoy |
Ionia, MI |
Improvements to the inventor's patent 173,032. |
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6,665
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Oct. 19, 1876
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Steam cylinder lubricator
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Elijah McCoy |
Ionia, MI |
This is the Canadian equivalent of U.S. patent 179,585. Co-assignee George S. Woodruff would eventually move to Toronto and manufacture gas governors there. The inventor was born in Canada to fugitive slaves from Kentucky. He moved to Scotland where he was certified as a mechanical engineer, and then rejoined his family who in the meantime had moved to Michigan. |
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8,143
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Nov. 27, 1877
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Gas governor
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George Smith Woodruff |
Grand Rapids, MI |
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Gas governor
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John Clay Fisks |
Grand Rapids, MI |
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10,168
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Jun. 26, 1879
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Improvements in gas governors
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George Smith Woodruff |
Grand Rapids, MI |
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221,950
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Nov. 25, 1879
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Gas-governors
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George Smith Woodruff |
Grand Rapids, MI |
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231,344
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Aug. 17, 1880
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Combined apparatus for producing illuminating gas and generating steam
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James Henry Needles |
Columbus, OH |
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11,808
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Sep. 23, 1880
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Improvements on gas regulators
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George Smith Woodruff |
ON, Canada |
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15,866
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Nov. 27, 1882
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Gas governors
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George Smith Woodruff |
Grand Rapids, MI |
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Gas governors
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John C. Fisks |
Grand Rapids, MI |
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