In 1893 Henry Augustus Tuttle established the H. A. Tuttle Manufacturing Co., in Stamford, Conn. In 1898 he patented and began manufacturing a tapping machine, and, at some point, gasoline engines. Tuttle's company apparently suffered from a lack of working capital: in late 1904 Tuttle took on an investor, W. M. Brewer, who was president of the Colonial Foundry & Machinery Co. Tuttle's business relocated to Brewer's home town of South Norwalk, Conn., where he continued making his tapping machines and gasoline engines.

Illustration from article in February 1902 "Machinery"

The arrangement with Brewer apparently did not work out because only a bit more than a year later—by May 1906—Tuttle moved to Taunton, Mass., and merged his business with marine engine maker Easternhouse Engine Co., with Tuttle as president. By November of 1907, the Tuttle tapping machine was being manufactured by Evans Stamping & Plating Co, of Taunton, and H. A. Tuttle was now working for that firm.

Information Sources

• December 1904 The Foundry.

  W. M. Brewer, president of the Colonial Foundry & Machinery Co., South Norwalk, Conn., has purchased an interest in the H. A. Tuttle Mfg. Co., Stamford, Conn., and the machinery has been moved to South Norwalk. Gasoline engines, reverse gears, tapping machines and some other specialies will be manufactured.

• 1905-01-19 The Iron Age.

  Bench Tapping Machines.—The H. A. Tuttle Mfg. Company. South Norwalk, Conn. Illustrated circular describing its No. 1 and No. 2 bench tapping machines. No. 1 machine, capacity up to ¼ inch: height of machine, 15 inches; diameter of swing table, 11½ inches; center of tap spindle to column, 6 inches. No. 2 machine, same dimensions and an adjustable belt tightening bracket.

• 1906-05-10 The Motor Boat.

  THE H. A. Tuttle Mfg. Co., South Norwalk, Conn., has been moved. bag and baggage, to Taunton. Mass., and has been merged with the Easternhouse Engine Co., with the following officers: President, H. A. Tuttle; treasurer, A. A. Ormsbee; secretary, G. C. Blandin. Mr. Tuttle was the founder of the H. A. Tuttle Co., and Mr. Ormsbee of the Easternhouse Engine Co. At their new plant, where they have very greatly increased facilities, the Easternhouse Co. will continue to manufacture the Pearl and Paragon four-cycle marine motors, also the Tuttle Patent Reversing Gear and Tapping Machine. They specially emphasize the point that their enlarged plant enables them to deliver the goods at once.

• The November 1907 issue of American Federationist carries a text ad from Evans Stamping & Plating Co. of Taunton that lists Tuttle tapping machines among their products.
• A late 1929 or early 1930 edition of Automotive Engineering carried what appears, based on the snippets available through Google Books, to be an obituary for Henry A. Tuttle.

  ...Mr. Tuttle was educated in the public schools of Springfield, Mass., and in 1893 founded in Stamford, Conn., the H. A. Tuttle Mfg. Co., which carried on a general machine business. He soon became interested in automobiles, which the pioneers in those days were beginning to build, and in and around 1900 he built some of the first cars in this Country. Later he designed and manufactured a marine engine and took out several patents on automobiles, ... He developed the Tuttle nut-tapping machine which... In 1906 Mr. Tuttle joined the Evans Stamping & Plating Co., of Taunton, Mass., for which he was chief engineer at the... which he developed an improved reversing gear which is now being manufactured by the Paragon Gear Works, of Taunton. Besides being a member of the Society of Automotive Engineers, Mr. Tuttle was a member of the American Society of Mechanical Engineers.