Specification of James Blackwell
Subtitle: evaporating furnaces
Publisher: Great Seal Patent Office
Published: 1855
Place of publication: London
Language: eng
Subjects: Furnaces; Smoke prevention; Salt industry and trade; Evaporation
Description: Patent for a furnace "for the purpose of evaporating fluids ... and the avoidance or diminution of smoke"
Notes: Cover title.

At head of title: A.D. 1848. No. 12049.

"James Blackwell, of Winsford, in the county of Chester, salt proprietor."