Yom Tov Lipman Lipkin (Hebrew: יום טוב ליפמן ליפקין, Russian: Липман Израилевич Липкин; 1846 – February 21 [O.S.
He was the youngest son of Rabbi Yisroel Salanter, the father of the Musar movement.
[1] A model of Lipkin's invention was exhibited at the exposition at Vienna in 1873, and was later secured from the inventor by the Museum of the Institute of Engineers of Ways of Communication, St. Petersburg.
Not knowing any non-Jewish languages, he had to derive his information from Hebrew books alone.
He received a Ph.D. degree at Jena University with a thesis titled "Ueber die Räumlichen Strophoiden."