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GB Patent: GB-539,497
Improvements In Or Relating To Electric Switch Apparatus With Safety Doors Or Cover-plates
Patentees:
George Adcock - Leicester, England
Howard Shipley - Leicester, England

USPTO Classifications:

Tool Categories:
electrical devices : electric switches

Assignees:
None

Manufacturer:
Adcock & Shipley, Ltd. - Leicester, England

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 02, 1940
Granted: Sep. 12, 1941

Patent Pictures:
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"Vintage Machinery" entry for Adcock & Shipley Ltd.
Description:
When the lid 12 of a switch box 10 is opened. a curved lever 16 which bears against the lid is moved by a spring 17 into the dotted position, causing the rotation of a shaft 15 and the moving of contacts 14a, carried by the shaft, into the "off" position.

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