Here are two ads that show the Manning Bowman Smokeless Table Broiler in direct competition with the Farberware Broiler Robot. These ads came from facing pages in the September 18, 1941 issue of LIFE magazine, and are a very rare example of head-to-head competition. The Farber item was priced $2 less than the M-B appliance. They were still both expensive! $7.95 and $9.95 in 1941 would be approximately equal to $168 and $210 in terms of 2005 purchasing power. We note that the Manning-Bowman folks were practically "giving away" a very nice serving platter (for an extra $2) if you bought their broiler.
The Black & Decker G48TD 3-in-1 Waffle Maker and Grill is a waffle maker, a griddle, and a grill. All you have to do to switch from making waffles to frying up eggs and bacon is to change the nonstick reversible cooking plates. A unique 180-degree hinge also doubles the available cooking area, so you'll end up with two eight-inch-square griddles for pancakes, eggs, and bacon. Then you can switch it up again to grill a sandwich for lunch.
The mold that is used to cook waffles is a heavy, heat-retaining device with a top and bottom compartment. The mold is gridded in a rectangular fashion such that protrusions on the top portion are complemented by depressions in the bottom (and vice versa). Because waffle molds were historically made out of cast iron, the device has come to be known as a "Waffle Iron". Today, aluminum and steel are the principal metals used to manufacture waffle "irons".
There are a zillion waffle irons. I own a bunch of them, but my favorite is the Manning-Bowman "Twin-O-Matic" both because of its unusual design and the way that it implicitly fosters "togetherness." The "twin" was designed by Karl Ratliff explicitly for the 1939 NEW YORK WORLDS FAIR. The Twin is a direct descendant of Mr. Cole's design but with an added Art Deco zest. This unique design won world awards and is the ONLY waffle iron shown in Tony Fusco's noted "ART DECO" BOOK, Volumes 1 and 2. It consists of 2 pieces: a double TOP/BOTTOM Waffle Iron derived from the Coles patent (above) and a circular chrome plated "trunion mount" that has 2 heavy Bakelite Cradles to support the irons. It is somewhat unique because it has both a Thermometer and a Thermostat.
Overall, the Krups was as easy to use as any machine we tested—though no machine is particularly tricky to figure out, as long as you read the instructions. Still, the GQ502D’s intuitive, set-it-and-forget-it system made the process particularly simple. Like all waffle makers, it does get hot in places: The steam vent at the back heated up quickly for us, and the top of the machine was too hot to touch after a couple of rounds of waffles. But the heatproof handle stayed cool, even after multiple uses, something that couldn’t be said of competitors like the Black+Decker Removable Plate Waffle Maker (WM700R), where built-up steam around the handle made the machine uncomfortable and risky to use.
Waffle sandwich caterer Matt Maichel, who also greases the plates before each use, had specific batter advice. “You should take your dough out of the fridge to come to room temp, or it will not cook as well,” he said. “The trick to filling is, find a batter that you like; the viscosity determines how much goes [on the plates]. Thicker stuff doesn’t spread out as well, so you might have to help it.” (We found in testing that a spatula or the back of a ladle worked well for this.) “You use the least amount of really thin batter because it goes all over the place,” he added.
It’s not always easy to compare waffle makers, because there are a number of different styles: those which make thick Belgian waffles, those which make thin and crispy American waffles, ones which can make both types, and even some which have both corrugated surfaces and flat surfaces so you can fry an egg at the same time you’re preparing a waffle.

The thermostat allows the automatic control of the temperature in the waffle iron. However, the "Twin-O-Matic" also has a thermometer -- a device that indicates the actual temperature of the iron. The principle behing the thermomenter is basically the same - a bimetallic strip is made with the property that its warping is a linear function of temperature. This strip is connected to a lever mechanism that causes the small needle to rotate. Hence, the position of the needle is a direct function of the temperature. The dial is calibrated to reflect this.

Like most electric waffle irons, the Cuisinart WMR-CA waffle maker isn't meant to be submerged, and the waffle plates are built right into the machine, so you can't remove them for a good scrubbing. Surprisingly, removable plates are relatively rare, especially in the American/traditional waffle maker category. But the Black and Decker G48TD (Est. $40) has them, which makes it very convenient to use. Not only do the non-stick waffle plates pop out for easy cleaning, they also have a completely flat reverse side (also non-stick). Flip the plates to their flat side and open the G48TD's lid all the way, and you have yourself a mini griddle for cooking things like pancakes and bacon; or close the "floating" hinged lid and use it to toast sandwiches.