1862 London Exhibition: Catalogue: Class VIII.: Daniel Adamson and Co
From Graces Guide
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1780. ADAMSON, DANIEL, and CO., Newton Moor Iron Works, near Manchester.
Twenty tons hydraulic lifting-jack; and small patent steam boiler.
ADAMSON'S PATENT HYDRAULIC LIFTING-JACKS, of twenty, sixteen, ten, eight, and six tons power.
These jacks are entirely self-contained, portable, powerful, and light. One man using them, can lift as much as four men with the screw jack, and in much less time. They are made to lift from 4 to 50 tons weight.