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Letter from Thomas Greenstreet about his engine for cutting large iron screws, with a note of the Society's decision
Letter from Thomas Greenstreet about his engine for cutting large iron screws, with a note of the Society's decision
Letter from William Jeffrey about jointed ladder
Letter from William Jeffrey about jointed ladder
Letter from Robert Salmon about his fire engine, with a note of the Society's decision
Letter from Robert Salmon about his fire engine, with a note of the Society's decision
Letter from Thomas Wood about his machinery for cleaning chimneys without the aid of climbing boys, with a note of the Society's decision
Letter from Thomas Wood about his machinery for cleaning chimneys without the aid of climbing boys, with a note of the Society's decision
Letter from John Guy on ascertaining the circumference of a circle
Letter from John Guy on ascertaining the circumference of a circle
Letter from John Guy on ascertaining the circumference of a circle, with a note of the Society's decision
Letter from John Guy on ascertaining the circumference of a circle, with a note of the Society's decision
Letter from Joseph Geere about his treatise on the property of the magnet, with a note of the Society's decision
Letter from Joseph Geere about his treatise on the property of the magnet, with a note of the Society's decision
Letter from W Blair about John Fitkin's improved truss
Letter from W Blair about John Fitkin's improved truss
Letter from Thomas Cleghorn to the Hon. Robert Clifford about his essay 'The Hydro-Aeronaut or Navigator's life-buoy'
Letter from Thomas Cleghorn to the Hon. Robert Clifford about his essay 'The Hydro-Aeronaut or Navigator's life-buoy'
Letter from John Stephens about closure bricks
Letter from John Stephens about closure bricks
Letter from Johnson about typographic composition, with a note of the Society's decision
Letter from Johnson about typographic composition, with a note of the Society's decision
Letter from John Hayton about his machine for sweeping chimneys with plans
Letter from John Hayton about his machine for sweeping chimneys with plans
Letter from J Saunderson about his burglar alarm, with a note of the Society's decision
Letter from J Saunderson about his burglar alarm, with a note of the Society's decision
Letter from John Wood about navigating barges, with a note of the Society's decision
Letter from John Wood about navigating barges, with a note of the Society's decision
Letter from William Shires about his improved 'Megalegraphic lantern', turning lather and 'Equatoreal', with a note of the Society's decision
Letter from William Shires about his improved 'Megalegraphic lantern', turning lather and 'Equatoreal', with a note of the Society's decision
Letter from John Clatworthy about his improvements to carts
Letter from John Clatworthy about his improvements to carts
Letter from JM Bagnold about his hydraulic pump
Letter from JM Bagnold about his hydraulic pump
Letter from Collier, printed notice about his filtering machine
Letter from Collier, printed notice about his filtering machine
Letter from Richard Swetnam on his perpetual motion machine
Letter from Richard Swetnam on his perpetual motion machine
Letter from Richard Swetnam on his perpetual motion machine
Letter from Richard Swetnam on his perpetual motion machine