Patent for a new and improved heating frame for lamps. This design seeks to "simplify and improve the adjustable supports for the top plate upon which the vessel [to be heated] is supported; secondly, to improve the construction of said top plate . . . allowing the warm air to circulate both under and around the vessel . . . thirdly, to construct and combine the top plate and a base-ring with the supporting-rods in a firm, durable, and efficient manner" (lines 27-38).