1851 Great Exhibition: Official Catalogue: Class VII.: John Spurgin
From Graces Guide
76. SPURGIN, JOHN, Guildford Street — Inventor.
Endless ladder and crane, intended to obviate the chances of being upset at the summit.
Patent paddle apparatus for boats and steam-boats, to prevent backwater.
Model of a patent vertebrate or jointed bridge, its strength being derived from wrought iron on the edge, by an arrangement which allows of flexibility in one direction, but effects a resistance or abutment in the other; its object is strength, facility of construction, and portability.