On his wise shoulders through the Checkerwork of leaves the sun flung spangles, dancing coins.
"Ulysses"
James Joyce
The second requirement is fulfilled by properly introducing the air into the furnace, either through Checkerwork under the burners or through openings around them, and by controlling the quantity of air to meet variations in furnace conditions.
"Steam, Its Generation and Use"
Babcock & Wilcox Co.
Where, in the spray burners, air is ordinarily admitted through a Checkerwork under the burner proper, with the mechanical burner, it is almost universally admitted around the burner.
"Steam, Its Generation and Use"
Babcock & Wilcox Co.