Check this out. Never seen one but have heard that these were popular with early shapers. http://www.ebay.com/itm/VINTAGE-MALL-3P-ELECTRIC-WOOD-PLANER-W-SHARPENED-KNIVES-CASE-WRENCH-/370859013192?pt=LH_DefaultDomain_0&hash=item5658eb7448 http://i.ebayimg.com/t/VINTAGE-MALL-3P-ELECTRIC-WOOD-PLANER-W-SHARPENED-KNIVES-CASE-WRENCH-/00/s/MTIwMFgxNjAw/z/dcEAAMXQLs5Rntlm/$T2eC16F,!ykE9s7tw!,tBRntllo0pw~~60_57.JPG
Gene Cooper has one of these in excellent condition and has posted some pix of it. These are chain-drive and go back to late 1930’s - 1940’s and are really heavy.