Propeller, Adjustable-Pitch
Object number83.9.1
Attributed to
Pittsburgh Steel Propeller Company
Manufacturer
Hamilton Standard Propeller Company
Date1932
OriginHartford, CT
Mediumvarious metals and metal plating, including aluminum; decalcomania, lacquer, paint
Credit LineGift of the Estate of George R. Hann
DescriptionVariable-pitch aircraft propeller.DimensionsHeight x Width x Depth: 6.25 × 7.5 × 97.9998 in. (15.9 × 19.1 × 248.9 cm)Height x Width x Length: 6.25 × 7.5 × 98 in. (15.9 × 19.1 × 248.9 cm)
MarksOval label each blade: "Hamilton Standard Propeller Company ... Connecticut Reg. U.S. Pat. Off. Division of United Aircraft & Transport Corporation".
Modern paper-dot label reads: "M 55".
Match-marked serial numbers on hub halves: 5131.
Historical NotesPropellor from Pennsylvania Airlines. Pennsylvania Airlines Company was in business from 1931-1948, at which point it became Capital Airlines, which later merged with United Airlines. Patent dates on the propeller are c. 1926. Pennsylvania Airlines used the Ford Tri-Motor aircraft in the early 1930s, and this propeller may have been the type fitted to this airplane. A variable-pitch propeller was developed by the Pittsburgh Steel Propeller Company, which was eventually absorbed by the Hamilton Standard Propellor Company. Hamilton Standard Propellor Company was a division of United Aircraft and Transport Corporation.
Previous owner
Pennsylvania Airlines Company
On View
On view
Sensemich
