초록 ▼

Disclosed is an improved hobbyist kiln containing one or more shelves each of which is constructed so as to have a hole located at about its geometric center. Additionally, the outside dimensions of the shelf are such that, on placing the shelf in the kiln, an annular space is provided between the p

Disclosed is an improved hobbyist kiln containing one or more shelves each of which is constructed so as to have a hole located at about its geometric center. Additionally, the outside dimensions of the shelf are such that, on placing the shelf in the kiln, an annular space is provided between the perimeter of the shelf and the refractory wall of the kiln. The shelf hole in conjunction with the annular space provides a patch for thermal convection currents to cycle within the kiln, thereby evening out temperature extremes which would otherwise occur therein. The shelves may be provided in the greenware state with a refractory alumina kilnwash, the resulting composite being fired to yield an improved refractory shelf with a durable tightly-bonded protective surface coating.

대표청구항 ▼

A refractory shelf for use in a home hobbyist kiln which has a refractory lined closed cavity, said shelf comprising a shaped, dried, and fired refractory support having a single hole located substantially at its geometric center, said shelf having outer dimensions less than the interior dimensions

A refractory shelf for use in a home hobbyist kiln which has a refractory lined closed cavity, said shelf comprising a shaped, dried, and fired refractory support having a single hole located substantially at its geometric center, said shelf having outer dimensions less than the interior dimensions of said cavity so as to permit updrafts of heated air currents to pass between said shelf and the wall of said cavity.