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Letter from Andrew Dacey about his machine to assist one armed persons in feeding
Letter from Andrew Dacey about his machine to assist one armed persons in feeding
Letter from William Heywood about his improved method of making cupolas
Letter from William Heywood about his improved method of making cupolas
Letter from Robert Jackson French about his mechanism for ensuring safety from the breaking of the hauling rope in raising coals from mines
Letter from Robert Jackson French about his mechanism for ensuring safety from the breaking of the hauling rope in raising coals from mines
Letter from Lieutenant H M Tylden about his improved anchor
Letter from Lieutenant H M Tylden about his improved anchor
Letter from Lieutenant H M Tylden about his improved anchor
Letter from Lieutenant H M Tylden about his improved anchor
Letter from E Woods about Lieutenant H M Tylden's improved anchor
Letter from E Woods about Lieutenant H M Tylden's improved anchor
Letter from William Everett about his improved sun dial and his method of hanging pictures
Letter from William Everett about his improved sun dial and his method of hanging pictures
Letter from A J Green asking if the Society rewards schemes for ventilating public as well as private or ordinary rooms
Letter from A J Green asking if the Society rewards schemes for ventilating public as well as private or ordinary rooms
Letter from John Crane about his parallel rule
Letter from John Crane about his parallel rule
Printed advertisement of W Naylor's about new glass ventilator
Printed advertisement of W Naylor's about new glass ventilator
Letter from Edgar Hyde on his gate fastening
Letter from Edgar Hyde on his gate fastening
Letter from Charles Frodsham about S Boulter's improved compensation for pendulums
Letter from Charles Frodsham about S Boulter's improved compensation for pendulums
Letter from Thomas A Leach about ventilating chimney cap
Letter from Thomas A Leach about ventilating chimney cap
Letter from Gilbert Vale, Professor of Mathematics and Nautical Astronomy, printed notice about his combined terrestrial and celestial globes in one instrument and printed notice of the Practical Mechanic's Journal
Letter from Gilbert Vale, Professor of Mathematics and Nautical Astronomy, printed notice about his combined terrestrial and celestial globes in one instrument and printed notice of the Practical Mechanic's Journal
Letter and plan from George Blackie about fire engine
Letter and plan from George Blackie about fire engine
Letter from Richard Buxton about improved lifeboat
Letter from Richard Buxton about improved lifeboat
Letter from J Johnston about cliff crane and breakwater
Letter from J Johnston about cliff crane and breakwater
Letter from William Wilkins about a new life and property preserver
Letter from William Wilkins about a new life and property preserver
Letter from Captain George William Manby about sea rescue apparatus
Letter from Captain George William Manby about sea rescue apparatus
Letter from Lt Col John McDonald about telegraphs
Letter from Lt Col John McDonald about telegraphs