Filmed in Valparaiso, Indiana in the late 1930’s, William Urschel demonstrates his “Wall Building” machine in this video.
According to his patent application in 1944, this invention is a machine operable to mold a solidifiable material into the form of a strip and deposit the same as a course or layer in the formation of a wall. A novel arrangement of tamping members tamp the material onto the wall. A vibratory feeder device feeds the material. Such a machine could be used to lay adobe, cob or rammed earth, either stabilized with cement or not.