2. Hydraulic Pumping Engine. (By Sir W. G. Armstrong, Mitchell & Co., Ltd.). 3. Worthington Hydraulic Engine. (Messrs. J. Simpson & Co., Ltd.).
4. Triple Expansion Compound Engine. (Ellington's Patent).
7. 160-Ton Hydraulic Crane. (By Sir W. G. Armstrong & Co.).
8. Hydraulic Movable Crane. (
Winch. (Ellington's Patent).
10 & 11. Hydraulic Post Crane. (By Sir W. G. Armstrong & Co.). 12. Double-power Crane. (Johnson & Ellington's Patent).
Chain Sack Hoist. (By Hydraulic Engineering Co.). 14. Hydraulic Capstan.
17. Hydraulic Apparatus for Dock Gates. (By Sir W. G. Armstrong & Co.).
(Brotherhood's Patent).
(Ellington's Patent).
Coal Discharging Apparatus. (By Sir W. G. Armstrong & Co.). 24. Clark & Standfield's Patent Hydraulic Apparatus for raising Guns. 25. Differential Hydraulic Accumulator. (Clark & Standfield's Patent). 26.
30. Patent Hydraulic Canal Lift for the French Government. (By Messrs.
Clark, Standfield & Clark).
31. Patent Hydraulic Canal Plan. (By Messrs. Clark, Standfield & Clark).