Patent Model - Improvement in Grate-Bars for Furnaces

Maker and role
William Cambridge (b.1807, d.1869), Patentee
J.T. Griffin, Assignee
William Cambridge (b.1807, d.1869), Assignee
 Production date
Nov 03 1868
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Object detail

Media/Materials
Wood
Measurements
2 3/8 x 2 1/2 x 7 3/16" (6 x 6.4 x 18.3cm)
Description
The nature of Griffin's invention "consists in contructing grate-bars with vertical lateral ribs, in combination with a depressed central web, pierced with obliquely-transverse openings or air-passages..." (Patent Number 83,689)
Collection
Rothschild Patent Model Collection
Object number
2015.14.931a,b
Currently on display?
No
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