This did the job, but it sure wasn't streamlined. Here is a photo from a World War II era training pamphlet. The subject was "How to use electrical appliances." Many rural households were just getting electricity due to the Rural Electrification Administration (REA) and the pamphlet was intended to get folks up to speed with the rest of the country. This photo shows the Government-approved method of "seasoning" a waffle iron (you put oil on it and let is burn in, creating the organic equivalent of Teflon). Any vegetable oil will do.
The Thermostat uses a bimetallic strip to break the circuit when the desired temperature is reached. This is a strip made up of two metals that have different thermal expansion characteristics, such as steel and copper. If one metal expands faster than the other, the strip will warp -- and the motion caused by this warping can do useful work (like breaking the circuit...) In this case, a cam exerts some force on the bimetallic strip using a spring force to keep the contact in place for varying amounts of temperature. For "high" settings, the bimetallic strip must warp a lot more to break the contact than for "low" settings.
Waffles remained widely popular in Europe for the first half of the 19th century, despite the 1806 British Atlantic naval blockade that greatly inflated the price of sugar. This coincided with the commercial production of beet sugar in continental Europe, which, in a matter of decades, had brought the price down to historical lows. Within the transitional period from cane to beet sugar, Florian Dacher formalized a recipe for the Brussels Waffle, the predecessor to American "Belgian" waffles, recording the recipe in 1842/43. Stroopwafels (Dutch syrup wafels), too, rose to prominence in the Netherlands by the middle of the century. However, by the second half of the 1800s, inexpensive beet sugar became widely available, and a wide range of pastries, candies and chocolates were now accessible to the middle class, as never before; waffles' popularity declined rapidly.
Cooks can use a convenient appliance like a double waffle maker or a countertop oven to save time and space. The baking plates of a double waffle iron are coated to prevent sticking so the Belgian waffles don’t get caught when removing the pastries from the unit. The flip design of a double waffle iron makes it easy to perfectly brown and then remove each waffle. If the waffle maker accidentally gets left on, its automatic shutoff feature turns it off. This preserves the life of the device and avoids the risk of an overheated electric appliance causing a fire.
We are including a look at Table Broilers here because they are part of the "make it at the table" ethos that prevailed when electric appliances were relatively rare and consequently tres chic. Wealthy hostesses missed no chance to show off their shiny new appliances. In turn, companies like Manning-Bowman sold appliances that were more like chrome sculpture. When appliances became more commonplace, they were removed from the table and relegated to the kitchen.