I thought that I would try and find some nice examples of what Georgians used for cooking, I've mentioned it before, so won't go on to much! We would have started with an open fire, logs of fire dogs and chimney cranes to carry the cauldrons, kettles trivets etc. As the Industrial Revolution began to advance across the country, coal became cheaper and more easily available, as did iron, and the first ranges were developed, little more than oversized hob grates, with adjustable cheeks to vary the amount of coal that was needed, and trivets that swung over the heat. These ranges could be small, or very large with rows of spits at the front (notice the one in the illustration of Brighton Pavillion's kitchen below) by the early 19th century some ranges had a tank for heating water too.
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They are lovely, and will give excellent customer service too!