


Sketches of mill used for arranging operations on the engine of four wheels in each cage from April 1836 - August 1837.

Carriage and method of setting spiral axes for a machine of 50 cages with two figure wheels in each cage. Plan, elevation, details.

Method of governing barrels et cetera. No. 1, plan of elevation.

Centres of axes and pen sketches of lockings for Sketch 14. Arrangement.

Multiplication before the invention of multiplication by table. Sheet 1 of 2.

Multiplication before the invention of multiplication by table. Sheet 2 of 2.

Method of bolting to platforms for vertical motion of axes, plan.

Sketch No. 11, circular, arrangement. Shows 27 variables.

Figure 1. First method of stepping by long pinions, elevation.

Sketch 12. Stepping by the method designed 15 April 1836. Circular arrangement, 27 variables.

Sketch of some of the centres et cetera for Plan 16. Arrangement.

Plan 16. Arrangement, several partial arrangements, numerous notes.

Sketch of sectors for giving vertical motion to axes. Arrangement, design, sketch for interference.

Locking motions for carriage column.

Elevation of arrangement 13 with some of the driving and directive. Elevation includes section of a barrel '65 bands 80 verticals'.

Figure 1, Plan / Figure 2, elevation, Figure C Carriage No 4.

Adding No. 6, carrying No. 14. Sketch of a method of adding and carrying intended for a Difference machine. Designed between 31 October 1836 and 12 November 1836. Plan, elevations, details, description.

Intended for engraving. Shows six barrels with reducing apparatus.

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

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

Sketch of an apparatus for advancing stereotype frames of the Difference Engine by cranks and backing them by weights. Superseded. Plan, elevation.

First sketch of all the parts in plan of the right half to middle group of General Plan 28. Plan, elevation.

Parts of the slide for Planing machine. Plan, elevation.

Anticipating whole and half zero digit counting carriage. Plan, elevation and details.

Elevation of parts of the card counting apparatus for operation and variable cards.

Motions of the printing apparatus

Motions of the stereotype frames

Chuck for Planing machine. Plan, elevation.

Circular motions of the calculating axes

Motions of the stereotype frames

Sketch of an apparatus for lifting the axes of the Analytical Engine. Plan, elevation.

Parts of slide for the Planing machine. Plan, elevation

Square root. Sheet 3 of 4.

Differences.

Printing differences.

Additions with signs.

Square root. Sheet 1 of 4.

Multiplication and division of 60 figures with tail of 60. General notation.

Standard case of approximate multiplication. Sheet 3 of 4.

Ordinary cycle of 16.

Extracted from notations F/39, F/42 and F/44 for the purpose of arranging the verticals on the barrels.

Square root. Sheet 4 of 4.

Approximative division. Standard case. Sheet 4 of 12.

Copy of ordinary cycle of 16. No. 32.

Division, continued. Sheet 2 of 12.

Multiplication. Sheet 1 of 4.

Multiplication.

Notation of carriage
