Brinsmade was a physician in Troy, N.Y., and a member of the Rensselaer Board of Trustees for twenty four years, having been elected on on March 4, 1844. In 1865, Brinsmade was elected vice president of Rensselaer, and on May 7, 1868, he was elected president. On June 22 of that same year, Brinsmade had a heart attack and died while making an appeal for funds at a public meeting.
Excerpt from Nason, Henry B., ed. Biographical Record of the Officers and Graduates of the Rensselaer Polytechnic Institute, 1824-1886. Troy, NY: William H. Young, 1887, pp. 37-40.