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Marconi Newton Constant-Speed Windmill 20Y Mark III, c. 1926

Inventory Number: 54960

54960-2t 54960-1t


Date: c. 1926

Maker Details: Unknown

Inscription: "MARCONI-NEWTON 20Y MARK III / PAT NO 262558/1926" around outer ring next to central hole. "3500 RPM 1.2HP / 70/175 MPH" around inner ring next to central hole.

Size: 205 mm in radius

Materials: Aluminium.

Other Given Number(s): Christie's 149, 869 (white tag).


Notes:

Marconi Newton Constant-Speed Windmill 20Y Mark III, of aluminium construction. Blade includes enclosed centrifugal mechanism to control pitch. As used with Type AD6 set, for example 'Marconi' Universal Aircraft Telegraph Transmitter/Receiver Type AD6 D (Inv. Num. 94461).


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