Linus Yale Jr.

Linus Yale Jr. was an American mechanical engineer, manufacturer, and co-founder with millionaire Henry R. Towne of the Yale Lock Company, which became the premier manufacturer of locks in the United States. He was the country's leading expert on bank locks and its most important maker. By the early 20th century, about three-quarter of all banks in America used his bank locks. He is best remembered for his inventions of locks, especially the cylinder lock, and his basic lock design is still widely distributed today, and constitutes a majority of personal locks and safes.

4 April 1821

Born on the same birth day (4 April): Asia Muhammad • Bapu Nadkarni • Currensy • Doug Lynch (ice hockey) • Eric Steinbach • Frank Kaminsky • György Spiró • Hugo Weaving • Jack Del Rio • Jill Scott (singer) • Joseph-Nicolas Delisle • Malik Yusef • Mary Colter • Piotr Anderszewski

Born in the same month (April 1821): Charles Baudelaire • Ford Madox Brown