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An early predominant manufacturer in the United States, Spencer Heath's American Propeller and Manufacturing Company opened in 1909, and first used machines for propeller mass production. Under the Paragon trademark, these were widely flown in World War I. Construction was a wood laminate because of light weight, strength, fabrication ease, and resistance to fatigue in a vibrating and flexing environment.

The manufacturer's brochure states three-bladed Paragon propellers were extensively used by the U.S. Navy beginning in 1912. It was claimed that "In point of strength of hub no propeller whatever can compare with the three-bladed . , ." and that they ". . . nearly always [give] better results than two-bladed propellers of any type."

This propeller was intended for a Gallaudet D-4 biplane designed and built by the Gallaudet Aircraft Company for the United States Navy.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Country of Origin United States of America Type PROPULSION-Propellers & Impellers Manufacturer American Propeller and Manufacturing Company
 Physical Description Type: Three-Blade, Fixed-Pitch, Wood, Unfinished Diameter: 304.8 cm (120 in.) Chord: 32.5 cm (12.8 in.) Engine Application: Liberty L-12 Dimensions Rotor/Propeller: 304.8 x 66 x 66 x 15.2 x 2.5 x 39.1cm (10 x 26 x 26 x 6 x 1 x 15 3/8 in.)
 Materials Wood
Varnish
Adhesive
 Inventory Number A19690120000 Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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