Thomas Robins (inventor) Thomas Robins (inventor) Thomas Robins, Jr. (September 1, 1868 – November 4, 1957) was an American inventor and manufacturer. He was born in September 1, 1868, in West Point, New York to Thomas Robins, Sr. He attended Princeton University. In 1891 he began work on a conveyor belt for carrying coal and ore for Thomas Edison and his Edison Ore-Milling Company in Ogdensburg, New Jersey. His conveyor belt received the grand prize at the Paris Exposition in 1900, and first prizes at the Pan-American Exposition and Saint Louis Exposition. Based on his invention he started the Robins Conveying Belt Company
Thomas Leavitt (inventor) volumes of United States mail. Thomas Leavitt, who set off the stampede with his first design, was married to Martha Elizabeth Whittier of Cornville, Maine, in 1851. The inventor died in 1899 and his wife Martha died in 1910. The couple had four children. Thomas Leavitt (inventor) Thomas Leavitt (1827–1899) patented, along with his brother Martin Leavitt, the first machine in the U.S. that made machine-cancelled postal letters practicable, enabling the United States Post Office to increase the volume of mail it handled, quickening the pace of delivery and allowing customers to more easily send letters of various sizes. Leavitt,