Vertical Four Engines being made in the Wright factory
Image credit: Wright State University

The Wright factory in Dayton, Ohio, was a far cry from the modest bicycle shop where their first engines were made. A fully euipped department produced engines, most of which were used in the Model "B", the most popular of the Wrights' designs. Serial numbers as high as 67 have been recorded, and it is possible that the factory produced over 100 engines. The factory was in operation under the Wrights' ownership from 1910-1915.

The photograph on the left was taken in the factory and shows the engine department. Note the Vertical Four engines in production and the pistons on the floor.