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This is a mock up of the valve train components of a World War II (WWII) era Pratt & Whitney Radial Aircraft Engine. Parts Manufacturing Company of Greenfield, Massachusetts, innovated a highly specialized process that was used to apply a special finish of exacting tolerances to these valve train parts. This is an example of the type of innovation for which the small companies of Greenfield were famous. This innovation contributed greatly to Pratt & Whitney's guarantee of "dependable engines." During WWII, employees in the plant worked around the clock to supply the Pratt & Whitney Aircraft Plant, 60 miles south in Harford, Connecticut, with trainloads of finished parts.


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Parts Manufacturing Company 3 dimensional airplane part

maker   Parts Manufacturing Company
date   c. 1940
location   Greenfield, Massachusetts
height (framed)   26.25"
width (framed)   26.5"
process/materials   steel
item type   Tools/Surveying & Navigational Tools & Equipment
accession #   #M.71

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See Also...

Components of a Proximity Fuze made by Raytheon Manufacturing Company during WWII

WWII Air Raid Warning Instructions

"Parts Manufacturing Co. 1940-1953" Ad from Greenfield Recorder-Gazette newspaper

"Darling Expands Parts Manufacturing Ten-Fold Since Firm Started in 1940" article from Greenfield Recorder-Gazette newspaper

Parts Manufacturing Company Memorial Plaque of WWII losses

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