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GB Patent: GB-190,311,147
Improvements in Change Speed Gear.
Patentees:
Alfred Soames (exact or similar names) - Surrey, England
Walter Langdon-Davies (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: May 15, 1903
Granted: May 05, 1904

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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