Punching machine

A punching machine is a machine tool for punching and embossing flat sheet-materials to produce form-features needed as mechanical element and/or to extend static stability of a sheet section. According to the file, Richard Walsh, the county of Grayson, and the State of Texas had invented and applied for US patent in 1894.[1]

  1. ^ UNT Libraries Government Documents Department (14 August 1894). "Punching-Machine". The Portal to Texas History.