Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
The Babbage Papers
Punched cards for Babbage's Analytical Engine
circa 1870
2 paper folders formerly belonging to Charles Babbage containing cut-outs of gearwheels
History.
Scribbling Book Volume II
Stepping No. 1 on or in central wheels. Figure 1. Figure 2. Various unnumbered elevations, plans and details.
Elevation of parts of middle group drawn in plan on No. 127.
History.
History.
See designs dated 1834 November 27 and 1834 December 29.
Addition No. 4. Carriage No 6. Elevation and plan.
Untitled. Draft notes. Sheet two of six.
Sketches of linkages
Direction of force in the Analytical Engine
Notation of units
Multiplication of P by Q
Complete trains of the Analytical Engine
Notation of units, multiplication
Notation of vertical positions, giving off and receiving
Notation of the Analytical Engine
Difference Engine index of parts.
Index of Difference Engine No. 2
Untitled. [Algebraic developments relating to various calculations]
Plan of Difference Engine No. 2. Tracing of BAB A/164.
Analytical Engine (appears incomplete).
On putting letters to drawings, in draft.
Rough draft of Universal Machine Tool. Designed and employed for obtaining the different motions.
Carriage with tens warning. Sheet 3.
Digit counting apparatus on the two upper wheel selectors.
General plan of Analytical Engine, quarter size.
Store variable selectors. Superseding drawing No 2.
Adding axis and wheels without framing
Plan of the figure wheels for one method of adding numbers.
Solution of two simultaneous equations
Index to drawings
Notation for the coefficients of the powers of x Computation of the coefficients of a polynomial from those of another divided by a linear term.
Frame of adding wheels
Plan of the calculating part of the Difference Engine
Motion for carrying the tens, plus and minus.
Plan and elevation of rising platform.
Section of adding wheels and framing.
A draft drawing labelled 'Sheet 3', showing card adding axis, mill adding axis, figure wheels, warning bar and lever and tens lifting slide.
Long pinions in the position for stepping. Adding wheels and short pinions behind long wheels.
General plan and detail of the driving of the calculating part of Difference Engine No. 2. Tracing of BAB A/161.
Plan of mill and store. First draft of revised store and mill connected.
End view and side elevation of driving and lifting apparatus.
Plan and elevation of bolts and advancing plate.
Rising platforms, advancing plate.
