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William Mason
William Mason
Born September 2, 1808(1808-09-02)
Mystic, Connecticut
Died May 21, 1883 (aged 74)
Taunton, Massachusetts
Resting place Taunton, Massachusetts
Education self-taught
Occupation Mechanical Engineer
Employer Mason Machine Works
Known for Mason's Spinning Mule / locomotive builder

William Mason (1808-1883) was a master mechanical engineer and builder of textile machinery and railroad steam locomotives. He founded Mason Machine Works of Taunton, Massachusetts. His company was a significant supplier of locomotives and rifles for the Union Army during the American Civil War. The company also later produced printing presses.

Youth and education[]

Mason was born in 1808 in Mystic, Connecticut, the son of a blacksmith. As a boy, Mason spent time in his father's shops. He left home at the age of thirteen and worked as an operator in the spinning room of a small cotton factory in Canterbury, Connecticut[1]. He was a born mechanical genius and could repair the most complicated machine in the mill. At the age of sixteen he went to East Haddam, where a mill for the manufacture of thread was being established, to start the machines. At seventeen he worked at the machine shop connected with the mill, where he stayed for three years. It was here he set up the first power loom in the country for the manufacture of diaper linen. He also constructed an ingenious loom for the weaving of damask table cloths.

Cotton and weaving machinery[]

File:Mason Mule.jpg

A Mason self-acting mule, ca.1898

In 1833, Mason joined Asell Lamphaer at Killingly, Connecticut, to make the ring-frame for spinning. He remodeled and perfected the "ring" which had been a failure, overcame the prejudice attached to it because of its failure, and caused the device to acquire the reputation it still retains today.[citation needed]

In 1835, Mason moved to Taunton, Massachusetts, to join Crocker and Richmond, manufacturers of cotton machinery. He worked almost entirely on ring frames. The firm failed in 1837 during the financial crisis. The business was taken over by Messrs Leach and Keith. Mason was employed as foreman. On October 8, 1840, his greatest invention, a "self-acting mule" was patented. Competition required improvements and on October 3, 1846, he received a patent for "Mason's Self-acting Mule."[citation needed]

Though the company would also later venture into the production of locomotives, rifles and printing presses, the production of textile machinery would be its most important sector until the later 19th century.

Diversifying into railroad equipment[]

File:BRBL 6 Bldr.jpg

Boston, Revere Beach & Lynn #6 (1886)

Leach and Keith suffered a failure in the winter of 1842 owing Mason a large amount of money. James K. Mills & Co. of Boston, a leading commission firm, came to his rescue and helped him to buy out the former partners. In 1845, new buildings were erected and the plant became the largest one devoted to the manufacture of machinery in the country. It made cotton machinery, woolen machinery, machinists' tools, blowers, cupola furnaces, gearing, shafting, railroad car wheels made with spokes, and after 1852, locomotives.

Mason wanted to improve the symmetry of the American locomotive. A first engine was turned out in 1853. In 1857 his firm failed but he managed to reopen the plant soon afterwards. The textile business recovered rapidly but the locomotive business was less prosperous. By 1860, he had produced a total of only 100 engines. The figure was doubled by 1865 due to the wartime demand and the pace continued for the next several years. Also during the American Civil War, 600 Springfield rifles were turned out weekly.

Mason's locomotives were genuinely handsome without ornaments. His influence was exerted over all locomotive builders at the time and later. In 1856 he built two locomotives for the Cairo and Alexandria Railroad of Egypt in which a commentator said that the engines' excellence was due to the accuracy of execution attained by an admirable set of tools and a skillful set of workmen. Opinion by master mechanics was that they were the easiest engines to keep in repair. The business was organized as the Mason Machine Works in 1873 with a capital of $800,000.

Death and legacy[]

File:William Mason Grave.jpg

The grave of William Mason, Taunton, Massachusetts

Mason died May 21, 1883 of pneumonia. He is buried at Mount Pleasant Cemetery in Taunton, Massachusetts. The 700th engine was being completed. Only 54 more engines were completed by 1889 and delivered in 1890. The company continued to build cotton machinery.

William Mason was a painter and a good violinist. He established a bank in Taunton for his employees and made gifts to charity. He is remembered as a pioneer in the building of locomotives which ranked foremost in the country.

See also[]

  • Mason Machine Works
  • Mason Bogie
  • Mount Pleasant Cemetery (Taunton, Massachusetts)

External links[]


  • Taunton and Mason: Cotton Machinery and Locomotive Manufacture in Taunton, Massachusetts, 1811-1861, by John William Lozier, Ph.d Dissertation Thesis at Ohio State University 1978. Copies also at Old Colony Historical Society in Taunton and at The Baker Business School Library at Harvard University.
  • Mason Machine Works. The Mason Machine Works, Taunton Massachusetts, U.S.A.: Inventors and Builders of Cotton Machinery. Taunton, Mass.: The Company, 1898.