In 1926, Mr. Charles M. Cole of Oakland, California came up with a novel idea for cooking two waffles at once. He devised a three-part mold with each segment heated by electric current. This device allowed couples to have their waffle at the same time (contributing to happy and harmonious breakfasts) and also was fairly economical in use of electric current. (In the 1920s, electricity was VERY expensive, perhaps 25 cents/Kwh in 1926 dollars. This would be about $7.50/kwh in today's dollars compared with an actual cost of about 7 cents/Kwh.)
This illustration anthropomorphizes the Twin-O-Matic and notes that post-war demand for small appliances will be a "half billion dollars" (about $100 billion in 2005 dollars), and encourages dealers to sign up to sell Manning-Bowman appliances. This is actually a very sad artifact, because the Manning-Bowman company was in deep financial distress because they could not get materials -- particularly chrome -- during World War II. This was an attempt to sign up dealers so that credit and financing could be obtained to last out the materiel shortages imposed by the War. It did not work, and soon thereafter, Manning-Bowman sank into a sea of red ink. The company's assets, including its spectacular Art Deco designs, were sold to the Bersted Corporation of Fostoria, Ohio. Berstead watered down the designs and made low-priced "drug store" versions of many Manning-Bowman appliances. (The Sandwich Grill on our Kitchen Aplliances page is a good example of this "cheapening" process.) Alas, Manning-Bowman met an inglorious end, but it was merely a foretaste of the vast wave of shoddy appliances made in faraway dictatorships that suffocate the American marketplace today.