Pot-hole

It is designed that the body part b shall be of suitable diameter to fit reasonably close into the pot-hole, and the flange b'' is intended to rest upon the stove-top; […]

In an attachment for a stove which has in its top a double pot-hole having straight sides and semicircular ends, said top having a depressed lid supporting shoulder surrounding said double pot-hole; […]

When different pots are to be used on one stove the most effective solution is to have the front pot-hole as large as the most commonly-used large pot, […]