Specification of Luke Roberts, Ephraim Armitage and Jonas Haley
Subtitle: apparatus for consuming smoke
Contributors: Armitage, Ephraim; Haley, Jonas
Publisher: Great Seal Patent Office
Published: 1872
Place of publication: London
Language: eng
Subjects: Smoke prevention; Boilers
Notes: Cover title.

At head of title: A.D. 1871, 31st October. No. 2917.

"Luke Roberts, engineer, Ephraim Armitage, engineer and Jonas Haley, card manufacturer, all of Cleckheaton, in the county of York"