Sketch of central wheel and principal framing. Plan, elevation.
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.
Notation of units
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 sectors for lifting the axes.
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.
Sketch of a decimal counting apparatus. Plan, elevation, description.
Notation of units
Plan 27. Linear arrangement with letter notations.
Plan No. 24. Arrangement and rack, rearrangement or notes.
Elevation of arrangement 13 with some of the driving and directive. Elevation includes section of a barrel '65 bands 80 verticals'.
Locking motions for carriage column.
Figure 1, Plan / Figure 2, elevation, Figure C Carriage No 4.
General Plan No. 23. Arrangement and rack.
Plan of an improved carriage by vertical chain, and a page of handwritten notes
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.
Sign apparatus for Plan 28a. Plan, elevation.
Plan of consecutive mill counting apparatus for General Plan 28. Plan, note.
Plan and elevation for the calculating part of the Difference Engine. Figure 1. Superseded. Consecutive carriage.
Sketch of an apparatus for advancing stereotype frames of the Difference Engine by cranks and backing them by weights. Superseded. Plan, elevation.
Plan titled, 'Various arrangements proposed, examined and rejected between the rejection of Plan 27 and the adoption of Plan 28. Figures 1, 2, 3, 4, 9. Various', and a folded sheet of notes
Axes D1 E1 for the left hand group of Plan 28. Plan, elevation.
First sketch of all the parts in plan of the right half to middle group of General Plan 28. Plan, elevation.
Sundry axes and wheels for Plan 28.
Speculations on the driving and directive for the Difference Engine. Superseded. Arrangements.
Improved framing for centre group of Plan 28. Arrangement, plan.
Untitled. Plan of locking plates for locking axis circularly and vertically.
Speculations on the driving and directive of the Difference Engine. Superseded. Arrangement.
Plan and elevation of a platform for giving circular motion to axes applied as an experiment to the Difference Engine No. 2. Drawing 163.
Parts of the slide for the Planing machine. 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.
Figures 1 and 2. Sketches of a tens chain for carriage for whole and half zero. Plan, elevation.
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
Part of the Planing machine.
