Third Wheel
The wheel in the train of a watch which lies between the center and fourth wheels.
THIOUT, M. Watchmaker to the Duke of Orleans. In 1741 he published a work called "Traite d'Horlogerie," in two volumes.
THOMAS, SETH. One of the early American manufacturers of clocks. In 1810 Eli Terry sold out his clock factory to Seth Thomas and Silas Hoadley, two of his leading workmen, and this factory was the leading one for many years. The present corporation, known as the Seth Thomas Clock Company, is the direct successor of this humble beginning. March 31, 1853, the Seth Thomas Clock Company was organized with a capital of $75,000. Seth Thomas died January 20, 1859, being 73 years of age.