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CA Patent: CA-3,499
Improvements on Lubricators for Steam Engines
Perfectionnements aux Grasseurs de Machines a Vapeur
Patentees:
Elijah McCoy (exact or similar names) - Ypsilanti, Washtenaw County, MI
George G. Roby (exact or similar names) - Detroit, Wayne County, MI
Charles G. Wiard (exact or similar names) - Detroit, Wayne County, MI

USPTO Classifications:

Tool Categories:
propulsion and energy : steam engines : steam engine lubricators

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry S. Sprague
L. Frederick Sheets

Patent Dates:
Applied: Mar. 18, 1874
Granted: May 29, 1874

Patent Pictures:
CIPO Data
Report data errors or omissions to steward Joel Havens
Wikipedia biography of Elijah McCoy
Description:
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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