1851 Great Exhibition: Official Catalogue: Class V.: W. G. Armstrong
From Graces Guide
44. ARMSTRONG, W. G., Newcastle-upon-Tyne.
Model hydraulic crane, for railway stations, docks, or quays. The power may be supplied either from the water pipes of a town, where the pressure is considerable, or from the action of a steam-engine with an accumulating reservoir.
Model steam-engine, with plunger pumps, especially adapted to the working of hydraulic lifting machinery.
Model of accumulator, for equalizing the working of the engine.
Model corn-lift, worked by hydraulic power, for corn warehouses.
Model of machine for unshipping coals by hydraulic power.