Apparatus and method for combustion

Apparatus for the efficient heating of an object by thermal radiation, comprising in combination:

• a. first, second, and third sets of logs, said sets each comprising at least one log and longitudinally oriented with respect to one another in a generally C-shaped geometric configuration with the first, second, and third sets of logs respectively providing the upper, lower, and rear legs of said C-shaped geometric configuration, the first and second sets of logs each having at least one log thereof in generally continuous longitudinal contact with a log of said third set, thereby to define an elongated combustion slot having an axis substantially parallel to the axes of said first, second, and third log sets, said combustion slot being substantially enclosed on three sides and open in the direction toward said object, and
• b. support means for maintaining said first, second, and third logs in said generally C-shaped geometric configuration as said logs are consumed by combustion.

Grate apparatus for supporting combustible logs, said grate apparatus comprising:

• a. base support means comprising a plurality of laterally spaced rib members defining a generally horizontal extending platform for supporting selected ones of said combustible logs at one level,
• b. laterally spaced upright members joined with said base support means and vertically extending upwardly from said platform and
• c. elevated support means for supporting other ones of said combustible logs at a level above said one level, said elevated support means comprising laterally spaced fingers having respective end portions cantilevered over said base support means, coupling means respectively joining said fingers with said upright members in a manner which enables the increased inclination of said end portions toward said base support means when said elevated support means supports said other ones of said combustible logs, thereby to enable any logs on said elevated support means to come into contact with logs on said base support means.

Grate apparatus for maintaning combustible materials in longitudinal contact with one another during combustion, said grate apparatus comprising:

• a. a base support including means defining a generally horizontally extending platform for supporting selected ones of said combustible materials at one level, and
• b. elevated support means for supporting other ones of said combustible materials at a second level above said first level, but in longitudinal contact with the combustible materials at said first level, said elevated support means comprising laterally spaced fingers so coupled with said base support that respective end portions of said fingers extend out over the horizontally extending platform and are inclined toward the horizontally extending platform, thereby to maintain longitudinal contact between combustible materials supported by said horizontally extending platform.