The engines were known simply by the name Thomas, but the company was called Thomas Aeromotor Co. Inc.

-In 1910 William T. Thomas and his brother Oliver W. Thomas founded the Thomas Brothers Company. In 1913 the name changed to Thomas Brothers Aeroplane Company. In 1915 they started a branch to build engines, the Thomas Aeromotor Company.

-In 1917, due to financial problems the Thomas brothers merged with the Morse Chain Company to form the Thomas-Morse Aircraft Corporation.

In 1929 this company was absorbed by the Consolidated Aircraft Corporation as the Thomas-Morse Division.

-The Thomas-Morse Aircraft Corp, made the Liberty Six during WWI.

-We provide an ad for the Thomas Aeromotor Co. of New York.

-The engines were designed by Oliver W. Thomas.

“Thomas ad”

From Appendix 6: We have a better photo of the Thomas V-8 engine, which is included in the main text in an ad for the brand.

-This is the 135 HP V-8, from 1916.

-After applying significant improvements its consumption was reduced with one American gallon per hour. Oil consumption was also reduced.

“Nice looking Thomas engine” (PiP)

From Appendix 7: We located two Thomas V-8 engine images, one installed in a cell and the other one loose.

“Two views of the Thomas V8”

-In 1909(?) it offered a 34 HP inline four-cylinder that was mounted on the Bokor triplane.

-In 1912 the larger 4-cylinder engine was already delivering 120 HP. It was water cooled.

The engine number "8" from 1915 was known by the nickname “Aeromotor”.

-It was a V8 that gave 135 HP at 2,000 rpm. with almost 553 cu. in. of total displacement.

-It had cast iron cylinders with “L-shape” chambers. The cylinders were inside integrated boxes that contained the cooling water.

“Thomas 890”

-The model 8 had been improved to the 88 of the year 1916. It gave 150/160 HP at 2,100 rpm with 588 cu. in. of displacement. This was a liquid-cooled V8 engine too.

“Thomas 890, left side drawing”

-In 1916, the 890 variant was also made giving 250 HP at 2,200 rpm with a reduction gear, so that when the engine was rotating at 2,100 the propeller was doing so at 1,200 rpm.

-It continued with the liquid-cooled V8 formula and it had 873 cu. in. of total displacement.