Henry H. Elberg from Greenfield, Indiana, received a U.S. patent for an improved school desk. Patent no. 191846 was issued on June 12, 1877.
This model is made of wood and has metal hinges. The seat curves and can be folded up. The desk's backrest is metal and has wooden hinges so that the desk folds down. A cushion of rubber or leather was to be inserted between the leg and the seat bracket to help prevent noise. The front legs flare out from the desk. There is no storage for books.
We are not aware of any additional information about the inventor/patentee.