MACHINERY IN GENERAL. [ 1780 ] Adamson, Daniel, & Go., 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, power ful, and light. One man using them, can lift as much as four men with the screw jack, and in much less tim«. They are made to lift from 4 to 50 tons weight. [ *78l ] Adcock, John, Marlborough Road, Dalston, London.—Carriage odometer, or improved distance indicator for wheel carriages. [ 1782 ] Allen, Harrison, & Co., Cambridge Street Mills, Manchester.—Gun-metal fittings for marine, locomotive, and stationary engines. t 1783 ] Appleby, Brothers, 69 King William Street, City, London.—Steam cranes; vertical and horizontal engines; wheels; pumps. {See page 2.) t 1784 ] Armstrong, Robert, North Woolwich, E.—A vertical steam boiler, model, and drawing. [ 1 785 ] Armstrong, Sir W. G., & Co., Elsioick Engine Works, Newcastle-upon-Tyne.—Models exhibiting Armstrong’s hydraulic system. [ 1786 ] Ashton, J. P., 2 Upper Holland Street, Kensington.—Steam engine and hoist. t I787 ] Askew, Charles, 27£ Charles Street, Hampstead Road, N. W.—Improved brewers’ circular refrigerator, circulating boiler, and chimney cowl. Class Till. ( 1 ) j
