Long-established B.F. Sturtevant Co. (hydraulic pumps, etc.) formed Sturtevant Manufacturing Co. 1910 to produce petrol engines, biggest project being V-8 aircraft engine. To find a market for this, Sturtevant Aeroplane Co. formed 1915 at Boston, Mass., chief engineer Grover C. Loening. Result was handful of mostly 1- or 2-off own designs, including Model S 2-seat biplane seaplanes for Navy and disastrous Model B single-seat sesquiplane (vitually parasol monoplane) for Army. Successful products included Curtiss JNs and DH-4s.