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Six Barton's buttons

Six Barton's buttons

1825-1835
two steel dies

two steel dies

1825-1832
Dividing engine, invented by Sir John Barton, 1820, (in damaged condition) (for list of accessories see typewritten sheet) in technical file

Linear instrument dividing engine.

1820
['Sir John Barton's scheme for preventing forgery of Bank of England notes' / John Barton. ca.1819. 1 sheet, bearing fifty engravings, each 1 1/2" square and each of a unique pattern. Sheet originally mounted on piece of linen which bears the title [assigned in 1931?] and "Various combinations of engraved cubes probably done on Lathe with overhead motion & some in dividing Engine". See MS 1359 for letter relating to this item]

Sir John Barton's scheme for preventing forgery of Bank of England notes'

circa 1819
Barton's ruling engine, invented by Sir John Barton, English, c. 1820. Ruling engine modified from one inherited by Barton from father-in-law William Harrison. Probably made by Henry Maudslay, London, England.

Part of linear instrument dividing engine.

1820
Part of dividing engine, invented by Sir John Barton, c.1805

Part of linear instrument dividing engine.

1820