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Letter from John Backhouse to his sister describing the opening train on the Stockton & Darlington Railway

Letter from John Backhouse to his sister describing the opening train on the Stockton & Darlington Railway

Catalogue of new double stars by F.G. W. Struve, annotated copy blonging to J.F.W. Herschel

Catalogue of new double stars by F.G. W. Struve, annotated copy blonging to J.F.W. Herschel

Volume entitled: "History of the Framework Knitting and Lace Trades"

Volume entitled: "History of the Framework Knitting and Lace Trades"

Marshall's Geological Diagrams

Marshall's Geological Diagrams

Letter from Henry Booth, company secretary and treasurer of the Liverpool & Manchester Railway, to James Loch, Bloomsbury Square, London with a report on the survey of Chat Moss by Thomas Shaw Brandreth

Letter from Henry Booth, company secretary and treasurer of the Liverpool & Manchester Railway, to James Loch, Bloomsbury Square, London with a report on the survey of Chat Moss by Thomas Shaw Brandreth

Manuscript entitled: "Catalogue of the Apparatus of Philosophical Instruments, in the Collection of Her Late Majesty Queen Charlotte, at the Observatory at Richmond in Surrey"

Manuscript entitled: "Catalogue of the Apparatus of Philosophical Instruments, in the Collection of Her Late Majesty Queen Charlotte, at the Observatory at Richmond in Surrey"

Digit counting apparatus on the two upper wheel selectors.

Digit counting apparatus on the two upper wheel selectors.

My Machine 1888 II Plan of driving cams, levers, etc. in initial position.

My Machine 1888 II Plan of driving cams, levers, etc. in initial position.

My Machine 1889 III Development of driving cams.

My Machine 1889 III Development of driving cams.

Store variable selectors. Superseding drawing No 2.

Store variable selectors. Superseding drawing No 2.

Side and end elevation of feed motions. Showing the bands in different colours.

Side and end elevation of feed motions. Showing the bands in different colours.

Side and end elevation of feed motion with shade. Second revision.

Side and end elevation of feed motion with shade. Second revision.

Reverse motion for cross planing.

Reverse motion for cross planing.

Back and end elevation of cross slide.

Back and end elevation of cross slide.

Side and end elevations of feed and driving apparatus

Side and end elevations of feed and driving apparatus

Elevation and section of cross slide.

Elevation and section of cross slide.

Plan, elevation and section of cross slide.

Plan, elevation and section of cross slide.

Small planing machine. Sheet 1.

Small planing machine. Sheet 1.

End and side elevation of Large Universal Machine.

End and side elevation of Large Universal Machine.

Plan of Large Universal Machine.

Plan of Large Universal Machine.

Plan of left half of middle group for General Plan 28.

Plan of left half of middle group for General Plan 28.

Plan of mill, table wheels and carriage. Sheet 31.

Plan of mill, table wheels and carriage. Sheet 31.

Lifting apparatus by screw. Sheet 9.

Lifting apparatus by screw. Sheet 9.

Carriage and racks in sections. Sheet 10.

Carriage and racks in sections. Sheet 10.

Platform raising apparatus. Sheet 33.

Platform raising apparatus. Sheet 33.

Motion for carrying the tens, plus and minus.

Motion for carrying the tens, plus and minus.

Sections of framing and racks. Sheet 6.

Sections of framing and racks. Sheet 6.

Long pinions in the position for stepping. Adding wheels and short pinions behind long wheels.

Long pinions in the position for stepping. Adding wheels and short pinions behind long wheels.

Untitled plan and elevation. Incomplete.

Untitled plan and elevation. Incomplete.

Adding column with motion for changing from plus to minus. Incomplete.

Adding column with motion for changing from plus to minus. Incomplete.

Untitled. A model of six cages was made from this drawing. Incomplete.

Untitled. A model of six cages was made from this drawing. Incomplete.

Untitled pencil layout, includes mill racks.

Untitled pencil layout, includes mill racks.

Drawing of the parts controlling the positioning and punching of the decimal point

Drawing of the parts controlling the positioning and punching of the decimal point

Sheet 1. Successive reduction of three simultaneous equations in three variables to find the solution for one variable.

Sheet 1. Successive reduction of three simultaneous equations in three variables to find the solution for one variable.

Sheet 2. Successive reduction of five simultaneous equations in five variables to find the solution for one variable.

Sheet 2. Successive reduction of five simultaneous equations in five variables to find the solution for one variable.

Reduction of three simultaneous equations in three variables to two simultaneous equations in two variables

Reduction of three simultaneous equations in three variables to two simultaneous equations in two variables

Difference Engine index of parts.

Difference Engine index of parts.

Untitled. [Operations for the Analytical Engine]

Untitled. [Operations for the Analytical Engine]

'View of the Manchester and Liverpool Railway - taken at Newton'

'View of the Manchester and Liverpool Railway - taken at Newton'

Approximative multiplication. Summary of multiplication. Sheet 2 of 5.

Approximative multiplication. Summary of multiplication. Sheet 2 of 5.

Vertical motions of the wheels and axes of the middle group of Plan 28 for algebraic addition of i k figures as performed in Notation 321. Sheet 1 of 2.

Vertical motions of the wheels and axes of the middle group of Plan 28 for algebraic addition of i k figures as performed in Notation 321. Sheet 1 of 2.

Arithmetical example of multiplication as performed in Notation 220.

Arithmetical example of multiplication as performed in Notation 220.

Selectors, drawings 82 and 83.

Selectors, drawings 82 and 83.

Notation of consecutive and half zero carriage.

Notation of consecutive and half zero carriage.

Reversing sign ascertaining if a variable is zero, ascertaining if a variable has a + or  - sign (supersedes 223).

Reversing sign ascertaining if a variable is zero, ascertaining if a variable has a + or - sign (supersedes 223).

Plan of consecutive mill counting apparatus for General Plan 28. Plan, note.

Plan of consecutive mill counting apparatus for General Plan 28. Plan, note.

Division. Working notation belonging to Summary No. 244 which superseded Notation 241.

Division. Working notation belonging to Summary No. 244 which superseded Notation 241.

Stepping up.

Stepping up.

Stepping down.

Stepping down.

Algebraic addition of i k figures. Sheet 8 of 8.

Algebraic addition of i k figures. Sheet 8 of 8.