Hot water urns were produced in England from the 1760s to make serving tea more convenient for the hostess. Urns eliminated the need to lift a heavy kettle; simply turning the tap drew hot water. Their inner workings were more complex and the assistance of a servant was still essential. To heat the water, charcoal was kept in a perforated silver container placed at the base of the urn. From the 1770s a heated iron plug was used instead and inserted into a copper tube that was soldered into the centre of the urn. When used in a drawing room with company, large silver urns were an obvious expression of wealth and taste. They were usually positioned on a specially designed urn stand that had a pull out drawer or slide on which the teapot was placed.