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FR Patent: FR-4,001
39. Changement de vitesse Gear Shifting
Patentees: Walter Langdon-Davies (exact or similar names) - Surrey, England Alfred Soames (exact or similar names) - Surrey, England USPTO Classifications: Tool Categories: industrial machines : industrial machine mechanisms : industrial machine speed and direction changing mechanisms Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 12, 1904 Granted: Apr. 19, 1905 Patent Pictures: Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Langdon-Davies Electric Motor Co.

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