The valveless revolving hog oiler was invented and patented in 1913 by E. J. Smith, father of Charles Ellsworth “Elly” Smith, from Malvern, Iowa. The oilers were built in Red Oak, Iowa at the Kernhardt Foundry, and shipped to Hastings, Iowa by the C. B. & O. Railroad.
Page updated on November 15, 2014 by Karyn Techau