Specification of Charles Samuel Walker and Robert Hoyle
Subtitle: apparatus for consuming smoke, and preventing the explosion of steam boilers
Contributors: Hoyle, Robert
Publisher: Great Seal Patent Office
Published: 1860
Place of publication: London
Language: eng
Subjects: Smoke prevention; Steam-boilers; Furnaces; Kitchen-boiler explosions; Accident Prevention
Notes: Cover title.

At head of title: A.D. 1859, 13th July. No. 1657.

"Charles Samuel Walker and Robert Hoyle, both of Bury, in the county of Lancaster, engineers".