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First 60 wheel & 7 levers - old plan.
PART OF:
Drawings of the Difference Engine No. 1
Made:
1820-1833
part of archive:
The Babbage Papers
maker:
Babbage, Charles
Details
Identifier:
BAB/K/029
Access:
Open Access
rights:
Copies may be supplied in accordance with current copyright legislation and Science Museum Group terms and conditions
Browse this archive
The Babbage Papers
BAB/A Drawings of the Analytical Engine
BAB/A/002 Untitled. This drawing is a cardboard model.
BAB/A/066 Consecutive counting apparatus.
BAB/A/067 Combinatorial and decimal counting apparatus comprising plan, elevation and description.
BAB/A/069 Figure 1. Clutch et cetera for driving the adding axes. Plan, elevation.
BAB/A/075 Plan 17, store on a rack. Arrangement.
BAB/A/078 General Plan No. 23. Arrangement and rack.
BAB/A/079 Plan No. 24. Arrangement and rack, rearrangement or notes.
BAB/A/081 Plan of an improved carriage by vertical chain, and a page of handwritten notes
BAB/A/085 Sketch of central wheel and principal framing. Plan, elevation.
BAB/A/086 Plan and section of an 8 inch figure wheel; hoarding carriage and framing plate. Plan, elevation.
BAB/A/089 Arrangement and rack of Plan 25
BAB/A/092 Carriage by vertical chain. Plan, elevation.
BAB/A/094 Two sheets relating to detailed sketches of the Analytical Engine.
BAB/A/103 Figures 1 and 2. Sketches of a tens chain for carriage for whole and half zero. Plan, elevation.
BAB/A/106 Anticipating whole and half zero digit counting carriage. Plan, elevation and details.
BAB/A/107 Parts of the slide for Planing machine. Plan, elevation.
BAB/A/108 Parts of the slide for the Planing machine. Plan, elevation.
BAB/A/113 Parts of slide for the Planing machine. Plan, elevation
BAB/A/115 Chuck for Planing machine. Plan, elevation.
BAB/A/118 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
BAB/A/120 Axes D1 E1 for the left hand group of Plan 28. Plan, elevation.
BAB/A/122 Improved framing for centre group of Plan 28. Arrangement, plan.
BAB/A/123 Sundry axes and wheels for Plan 28.
BAB/A/124 First sketch of all the parts in plan of the right half to middle group of General Plan 28. Plan, elevation.
BAB/A/125 Plan of consecutive mill counting apparatus for General Plan 28. Plan, note.
BAB/A/127 Plan of the left half to middle group for General Plan 28.
BAB/A/129 Elevation of parts of middle group drawn in plan on No. 127.
BAB/A/133 Elevation of parts of the card counting apparatus for operation and variable cards.
BAB/A/139 Sign apparatus for Plan 28a. Plan, elevation.
BAB/A/141 Sketch of an apparatus for lifting the axes of the Analytical Engine. Plan, elevation.
BAB/A/145 Plan and elevation for the calculating part of the Difference Engine. Figure 1. Superseded. Consecutive carriage.
BAB/A/148 Sketch of an apparatus for advancing stereotype frames of the Difference Engine by cranks and backing them by weights. Superseded. Plan, elevation.
BAB/A/149 Speculations on the driving and directive for the Difference Engine. Superseded. Arrangements.
BAB/A/150 Difference Engine wheels for driving the cranks which move the matrix frames. Superseded. Plan, elevation.
BAB/A/153 Untitled elevation of the printing and stereotype apparatus. Superseded.
BAB/A/154 Speculations on the driving and directive of the Difference Engine. Superseded. Arrangement.
BAB/A/156 Plan of the apparatus for stereotyping and printing for both the Analytical and Difference Engines. Superseded.
BAB/B Drawings and tracings of Difference Engine No. 2.
BAB/B/001 Elevation of Difference Engine No.2.
BAB/B/002 Plan of Difference Engine No. 2. Tracing of BAB A/164.
BAB/C Miscellaneous tracings relating to the Analytical Engine
BAB/C/127 Plan of left half of middle group for General Plan 28.
BAB/C/135 Apparatus for registering the quotient adapted to Plan 28a.
BAB/E Drawings of tools
BAB/E/001 Rough draft of Universal Machine Tool. Designed and employed for obtaining the different motions.
BAB/E/004 Reverse motion for cross planing.
BAB/E/005 Elevation and section of cross slide.
BAB/E/006 Plan, elevation and section of cross slide.
BAB/E/007 Back and end elevation of cross slide.
BAB/E/008 Side and end elevations of feed and driving apparatus
BAB/E/009 Side and end elevation of feed motion with shade. Second revision.
BAB/E/010 Front and side elevation of feed apparatus. Showing worm and slotting motion.
BAB/E/011 Side and end elevation of feed motions. Showing the bands in different colours.
BAB/E/013 Small planing machine. Sheet 1.
BAB/E/014 End and side elevation of Large Universal Machine.
BAB/E/016 Small Universal Machine. Sheet 6.
BAB/E/019 Plan of Large Universal Machine.
BAB/F Notations of the Analytical Engine
BAB/F/001 Multiplication before the invention of multiplication by table. Sheet 1 of 2.
BAB/F/002 Multiplication before the invention of multiplication by table. Sheet 2 of 2.
BAB/F/005 Division continued. Sheet 3 of 4.
BAB/F/007 Extraction of square root. Sheet 1 of 4.
BAB/F/008 Extraction of square root. Sheet 2 of 4.
BAB/F/010 Extraction of square root. Sheet 4 of 4.
BAB/F/012 Notation for lifters for division by table, continued. Sheet 2 of 2.
BAB/F/014 Bolting plates for multiplication by table.
BAB/F/015 Table division.
BAB/F/016 Table division.
BAB/F/017 Table division.
BAB/F/019 Multiplication without table. Sheet 2 of 2.
BAB/F/026 Square root. Sheet 1 of 4.
BAB/F/028 Square root. Sheet 3 of 4.
BAB/F/029 Square root. Sheet 4 of 4.
BAB/F/032 Ordinary cycle of 16.
BAB/F/033 Notation of carriage
BAB/F/035 Various sheets on division and multiplication.
BAB/F/037 Notation for division.
BAB/F/041 Notation of the counting apparatus, et cetera, to suit Notation 39, for multiplication.
BAB/F/042 Notation for division for Sketch No. 12 ( A/33).
BAB/F/043 Cycles on barrels for division.
BAB/F/044 Notation for square root.
BAB/F/046 Counting apparatus.
BAB/F/047 Division and multiplication of 60 figures.
BAB/F/048 Single machine division of 30 figures with tail. General notation.
BAB/F/083 Notation of approximative multiplication.
BAB/F/084 Addition and subtraction with signs.
BAB/F/086 Notation for the directive of multiplication.
BAB/F/098 Notation of cards for division and approximative division.
BAB/F/099 Cases of the combination of the algebraic and accidental sign.
BAB/F/100 Addition.
BAB/F/101 Addition.
BAB/F/103 Notations dealing with addition, division and multiplication. Notation for addition of any number of quantities, giving off and retaining at every addition. Sheet one of six.
BAB/F/103/1 Untitled. Draft notes. Sheet two of six.
BAB/F/103/5 Multiplication, division and addition for verticals. Sheet six of six.
BAB/F/104 Algebraic addition.
BAB/F/109 Notations for division.
BAB/F/109/02 Division, continued. Sheet 2 of 12.
BAB/F/109/04 Approximative division. Standard case. Sheet 4 of 12.
BAB/F/109/07 Approximative division, continued. Sheet 7 of 12.
BAB/F/109/08 Approximative division, continued. Sheet 8 of 12.
BAB/F/109/10 Approximative division, continued. Sheet 10 of 12.
BAB/F/109/12 36 variations of approximative division. Sheet 12 of 12.
BAB/F/110 Verticals for multiplication. Notation 108.
BAB/F/114 Notation of cards for algebraic addition.
BAB/F/118 General notation of directive.
BAB/F/120 No sheet according to the note 'none' on front page of BAB F/122.
BAB/F/122 Algebraic addition.
BAB/F/123 Notation of cards for algebraic addition.
BAB/F/126 Trains in division.
BAB/F/129 Trains for multiplication and variations of common and approximative multiplication.
BAB/F/129/1 Trains of multiplication. Standard Case. Sheet 1 of 2.
BAB/F/129/2 Trains of variations of common and approximative multiplication. Sheet 2 of 2.
BAB/F/133 Distribution of verticals of the large group of the mill on seven barrels.
BAB/F/136 Verticals used on the seven barrels of the great group in division. Standard Case.
BAB/F/138 Subsidiary operations on K combined with rack and "F executed during multiplication and division in mill.
BAB/F/139 Trains on "F and I during operations in mill and store.
BAB/F/139/1 Trains on "F and I during operations in the mill. Sheet 1 of 3
BAB/F/139/3 Trains on "F and I during subsidiary operations in store. Sheet 3 of 3.
BAB/F/140 Steps of the trains in one barrel in group "F and I during operations in the mill and during subsidiary operations in the store.
BAB/F/141 Enumeration of trains on groups I and "F.
BAB/F/144 Trains of group "F I for division. Standard Case.
BAB/F/147 Directive of division.
BAB/F/151 Trains of algebraic addition.
BAB/F/151/2 Trains of algebraic addition. Sheet 2 of 2.
BAB/F/152 Used while discussing the selecting apparatus.
BAB/F/153 Used while discussing the selecting apparatus.
BAB/F/154 Sketches of various notations.
BAB/F/155 Tables of multiples, et cetera.
BAB/F/157 Used while discussing selectors.
BAB/F/158 Selectors. Notation for setting the shades for the nine multiples of 04321 for number and complement.
BAB/F/159 Selectors. Notation for setting the cams for the nine multiples of 04321.
BAB/F/160 Notation and description of the carriage drawn on Notation 81.
BAB/F/161 Selectors, drawings 82 and 83.
BAB/F/178 Case of division illustrating the method of selecting + or - quotient figures with one set of selectors.
BAB/F/179 Approximate Division. Standard case to suit Plan 26 Drawing 90 and case on Notation 178.
BAB/F/183 Multiplication. Sketches of Notations.
BAB/F/184 Algebraic addition of K figures
BAB/F/185 Sketches of algebraic addition.
BAB/F/186 Sketches of algebraic addition.
BAB/F/187 Algebraic addition of K figures.
BAB/F/188 Sequences of the verticals for algebraic addition of k figures.
BAB/F/188/2 Sequences of the verticals for algebraic addition of K figures. Sheet 2 of 2
BAB/F/189 Algebraic addition of K figures. Sequences of the verticals and the work ordered by each vertical.
BAB/F/189/1 Algebraic addition of K figures. Sequences of the verticals and the work ordered by each vertical. Sheet 1 of 2.
BAB/F/190 Sketches of notations for algebraic addition. Case 1, 2 and 3.
BAB/F/191 Directive of algebraic addition.
BAB/F/194 Algebraic addition.
BAB/F/195 Algebraic addition.
BAB/F/195/1 Algebraic addition. Sheet 1 of 3.
BAB/F/195/3 Algebraic addition. Sheet 3 of 3.
BAB/F/197 Algebraic addition.
BAB/F/198 Work ordered by three barrels for algebraic addition of n times k figures.
BAB/F/198/1 Work ordered by three barrels for algebraic addition of n times k figures. Sheet 1 of 2.
BAB/F/198/2 Work ordered by three barrels for algebraic addition of n times k figures. Sheet 2 of 2.
BAB/F/199 Compound addition or addition of n k figures. Notation of cards for compound addition.
BAB/F/200 Algebraic addition of n times k figures.
BAB/F/200/1 Algebraic addition of n times k figures. Sheet 1 of 3.
BAB/F/202 Verticals on each barrel for algebraic addition of k figures.
BAB/F/203 Sequences of the verticals on each barrel for algebraic addition of k figures.
BAB/F/204 Algebraic addition of k figures.
BAB/F/206 Multiplication.
BAB/F/206/2 Multiplication. Sheet 2 of 3.
BAB/F/208 Verticals for multiplication (as performed in Notation 206) on one barrel.
BAB/F/210 Axes, times and bands of the Analytical Engine.
BAB/F/210/2 Axes, times and bands of the Analytical Engine. Sheet 2 of 2.
BAB/F/211 Mill.
BAB/F/211/1 Mill. Sheet 1 of 2.
BAB/F/211/2 Mill. Cycles of 15 and 20. Sheet 2 of 2.
BAB/F/212 Algebraic addition of k figure.
BAB/F/215 Arithmetic examples of algebraic addition of n times k figures.
BAB/F/218 Division.
BAB/F/218/1 Division. Sheet 1 of 6.
BAB/F/219 Arithmetical example of multiplication as performed in Notation 220.
BAB/F/220 Multiplication.
BAB/F/220/1 Multiplication. Sheet 1 of 3.
BAB/F/220/2 Multiplication. Sheet 2 of 3.
BAB/F/221 Verticals for division as performed on Notation 218 arranged on one barrel.
BAB/F/225 Multiplication of two factors, when the multiplicand has more than k, but both factors together not more than 2 k digits.
BAB/F/226 Cards, et cetera for multiplication of a number having k + p digits by another number having not more than k - p digits
BAB/F/227 Reversing sign ascertaining if a variable is zero, ascertaining if a variable has a + or - sign (supersedes 223).
BAB/F/229 Stepping up.
BAB/F/230 Stepping down.
BAB/F/233 Notation of units of consecutive half zero carriage.
BAB/F/235 Notation of consecutive and half zero carriage.
BAB/F/236 Anticipating half zero carriage. Addition and subtraction.
BAB/F/236/2 Anticipating half zero carriage. Addition and subtraction by half zero. Sheet 2 of 2.
BAB/F/238 Digit counting by carriage. Drawing 106.
BAB/F/240 Summary of multiplication.
BAB/F/242 Division. Working notation belonging to Summary No. 244 which superseded Notation 241.
BAB/F/245 Summary of algebraic addition.
BAB/F/246 Algebraic addition.
BAB/F/247 Carriage.
BAB/F/249 Vertical positions of the wheels.
BAB/F/249/2 Vertical position of the wheels for steppings in division and multiplication. Stepping up during division and giving off to selectors. This includes stepping up before division. Sheet 2 of 5.
BAB/F/249/4 Vertical positions of the wheels. Sheet 4 of 5.
BAB/F/249/5 Vertical positions of the wheels. Sheet 5 of 5.
BAB/F/250 Cycles for division, stepping, addition and subtraction.
BAB/F/251 Cycle of units.
BAB/F/252 Vertical motions of the wheels and axes of Plan 28.
BAB/F/257 Mill decimal counting apparatus.
BAB/F/258 Counting apparatus. Multiplication and division.
BAB/F/261 Plan 28. Trains, vertical positions of the wheels and algebraic addition.
BAB/F/261/01 Vertical positions of the wheels of Plan 28. Sheet 1 of 23.
BAB/F/261/05 Vertical positions of the wheels of Plan 28. Sheet 5 of 23.
BAB/F/261/06 Vertical positions of the wheels of Plan 28. Sheet 6 of 23.
BAB/F/261/07 Vertical positions of the wheels of Plan 28. Sheet 7 of 23.
BAB/F/261/14 Vertical positions of the wheels of Plan 28 for multiplication. Sheet 14 of 23.
BAB/F/261/15 Vertical positions of the wheels of Plan 28. Sheet 15 of 23.
BAB/F/261/17 Vertical positions of the wheels of Plan 28 for artificial stepping of divisor. Sheet 17 of 23.
BAB/F/261/19 Vertical positions of the wheels of Plan 28 algebraic addition of k figures. Sheet 19 of 23.
BAB/F/261/20 Vertical positions of the wheels of Plan 28 for algebraic addition of i k figures. First part of cycles ordered by verticals n and 'n of centre barrel. Sheet 20 of 23.
BAB/F/261/21 Algebraic addition of i k figures. Cycle ordered by vertical "a of centre barrel. Sheet 21 of 23.
BAB/F/261/23 Algebraic addition of i k figures (General Plan 28). Cycle ordered by vertical ""s of centre barrel. Sheet 23 of 23.
BAB/F/266 Verticals for multiplication. Notation 259.
BAB/F/267 Counting apparatus. Approximative multiplication and division.
BAB/F/268 Approximative and common multiplication for Plans 28 and 28a.
BAB/F/268/1 Approximative multiplication for Plans 28 and 28a. Sheet 1 of 8.
BAB/F/268/2 Approximative multiplication for Plan 28. Sheet 2 of 8.
BAB/F/268/3 Approximative multiplication for Plan 28. Sheet 3 of 8.
BAB/F/268/4 Approximative multiplication for Plan 28. Sheet 4 of 8.
BAB/F/315 Multiplication. One barrel.
BAB/F/315/1 Multiplication. One barrel. Sheet 1 of 2.
BAB/F/316 List of verticals on one barrel for division (Notation 290) with the equivalent verticals on five barrels to order the same work.
BAB/F/319 List of verticals on one barrel for multiplication (Notation 268) with the equivalent verticals on five barrels to order the same work.
BAB/F/320 Second arrangement of the verticals for one barrel to perform multiplication in the manner exhibited on Notation 268 and with General Plan 28 and 28a.
BAB/F/323 Verticals upon four barrels for algebraic addition of i k figures. Notation 321.
BAB/F/323/1 Verticals upon four barrels for algebraic addition of i k figures. Notation 321. Sheet 1 of 2.
BAB/F/324 Notation of cycle wheels.
BAB/F/325 Notation of units for Plan 28.
BAB/F/326 Untitled. [Motions of axes and wheels of Plan 28]
BAB/F/331 Trains and vertical motions of the wheels and axes of the right, middle and left groups of Plan 28a for division as performed in working Notation 290.
BAB/F/331/2 Untitled. [Trains and vertical motions of the wheels and axes of the right, middle and left groups of Plan 28a for division as performed in working Notation 290]. Sheet 2 of 4.
BAB/F/331/3 Untitled. [Trains and vertical motions of the wheels and axes of the right, middle and left groups of Plan 28a for division as performed in working Notation 290]. Sheet 3 of 4.
BAB/F/335 Stepping up or down or multiplying or dividing by any power of ten. Plans 28 and 28a.
BAB/F/335/1 Stepping up or down or multiplying or dividing by any power of ten. Plans 28 and 28a. Sheet 1 of 2.
BAB/F/337 Notation of verticals for differences (Notation 334) and stepping up or down Notation 335.
BAB/F/339 List of cycles with their vertical motions.
BAB/F/340 Vertical motions of cycles a and a e.
BAB/F/343 Motions of some of the axes for Plan 28.
BAB/F/343/1 Motions of some of the axes for Plan 28. Sheet 1 of 8.
BAB/F/343/2 Motions of some of the axes for Plan 28. Sheet 2 of 8.
BAB/F/343/4 Motions of some of the axes for Plan 28. Sheet 4 of 8.
BAB/F/343/5 Motions of some of the axes for Plan 28. Sheet 5 of 8.
BAB/F/345 Vertical motions of the wheels and axes of the middle group of Plan 28a for algebraic addition of k figures as performed in Notations 306 and 306x.
BAB/F/348 Trains and vertical motions of the wheels and axes of the right, middle and left groups of Plan 28a for multiplication as performed in working Notation 268
BAB/F/380 List of the cases in multiplication as performed in Notation no. 268.
BAB/F/382 Notation of units anticipating whole zero cycles by circular chain.
BAB/F/388 Notation of units of apparatus for combining incommensurable cycles (Drawing 142).
BAB/H Notation of units of the Difference Engine No. 2.
BAB/H/003 Sheet 3 showing odd difference warnings, vertical motion; even difference sectors, circular motion, vertical motion and even difference figure wheels, circular motion.
BAB/H/004 Sheet 4 showing even difference figure wheels, vertical motion, locking of even difference figure wheels and even difference warnings, circular motion and vertical motion.
BAB/H/006 Sheet 6 showing even difference figure wheels; even difference warnings; large stereotype sectors, vertical motion and calculations conveyed to printing sectors, to large and small stereotype sectors.
BAB/H/009 Sheet 9 showing copper plate motion.
BAB/I Notations of the Analytical Engine, Second phase
BAB/K Drawings of the Difference Engine No. 1
BAB/K/002 Endless screw, clutches, etc. for moving the copper
BAB/K/003 Frame for holding the copper
BAB/K/004 Three figure motion
BAB/K/029 First 60 wheel & 7 levers - old plan.
BAB/K/032 Drawing of the parts controlling the positioning and punching of the decimal point
BAB/K/033 Type Sectors.
BAB/K/040 Untitled.
BAB/K/043 3 figure motion.
BAB/K/044 Untitled.
BAB/K/071 untitled
BAB/K/078 Endviews of general platform. Plan of framing plates next type sector etc.
BAB/K/080 Untitled
BAB/K/083 Untitled
BAB/K/084 Drawing showing the Intermediate Wheels and Axes
BAB/K/086 Drawing showing the 60 wheel group of mechanisms
BAB/K/090 Plan and end view of the zigzag motion crank
BAB/K/092 End view of the frame and arch which support the general platform in the middle of the engine
BAB/K/094 Wheel for three figure motion, indispensable element.
BAB/M Stereotype drawings
BAB/M/001 Plan of the figure wheels for one method of adding numbers.
BAB/M/002 Adding axis and wheels without framing
BAB/M/003 Frame of adding wheels
BAB/M/004 Section of adding wheels and framing.
BAB/M/010 Long pinions in the position for stepping. Adding wheels and short pinions behind long wheels.
BAB/O Formulas relating to programs
BAB/O/002 Untitled. [Algebraic developments relating to various calculations]
BAB/O/004 Sturm's Theorem.
BAB/O/005 [Table of figures] from Mr. Barnett.
BAB/P Drawings of the Analytical Engine, Second Phase.
BAB/P/159 Analytical Engine (appears incomplete).
BAB/P/162 Untitled. Shows plans and elevations of store wheels, mill, mill wheel cages, carriages and framing.
BAB/P/163 Elevations and plans of printing apparatus. Experimental sketches for mill and store plans.
BAB/P/164 Plan of part of the Analytical Engine. Quarto size.
BAB/P/166 Parts of plan, elevation and section of rising platforms for store. Superseded in following sheet.
BAB/P/168 Plan and side elevation of table axis with combination of cams and platforms. Plan and end elevation of mill showing a combination of cams, platforms, stop bolts and barrels.
BAB/P/169 Rough draft of mill and driving without platforms.
BAB/P/171 Sketches of axes, bolts and levers.
BAB/P/173 Driving of mill axis. Appears incomplete.
BAB/P/174 Untitled. Appears to be a machine tool slide.
BAB/P/176 Untitled. Probably a plan and elevation.
BAB/P/177 Improved table for shaping machine.
BAB/P/178 Detailed sketches of moving parts. Untitled.
BAB/P/180 Hoarding carriage.
BAB/P/190 Untitled details. Incomplete.
BAB/P/191 Untitled details. Incomplete.
BAB/P/193 Circular half zero carriage. Plans No. 8 - 10.
BAB/P/196 Figure No. 11. Half zero carriage with hoarding. Incomplete details.
BAB/P/197 Plans for store variables.
BAB/P/198 Adding column with motion for changing from plus to minus. Incomplete.
BAB/P/199 Untitled. A model of six cages was made from this drawing. Incomplete.
BAB/P/200 Whole zero and half zero, three figures.
BAB/P/201 Whole zero and half zero.
BAB/P/202 Half size plan and side elevation of three moveable platforms of which the two lower are abolished
BAB/P/205 Untitled plan and elevation. Incomplete.
BAB/P/207 Plan and elevation of bolts for each axis in the mill and motion for raising platform.
BAB/R Catalogues and indexes of Babbage's papers relating to his calculating engines
BAB/R/001 Index to drawings
BAB/R/004 The drawings of the New Engine arranged according to the subjects alphabetically. Analytical.
BAB/R/005 Catalogue of the drawings of the New Analytical Engine.
BAB/R/007 Catalogue of 386 notations with their classification.
BAB/R/008 List of designs. Cross reference list, showing numbers of drawings, pages of sketch books and numbers of notations.
BAB/R/010 Corrected printed proofs and sheets of lists in H.P. Babbage's 'Calculating Engines', enclosed in a manuscript cover. It includes a manuscript list of tool drawings.
BAB/R/013 List of sizes of the notations of the Analytical Engine.
BAB/R/014 List of plates.
BAB/S Sketch books and scribbling books
BAB/U Difference Engine No. 1. Drawings, notations, manuscripts and printed extracts.
BAB/U/001 Plan and side elevation of the Difference Engine
BAB/U/004 Plan of the calculating part of the Difference Engine
BAB/U/008 Number no longer in use. Re-numbered as BAB U/3[a].
BAB/U/009 Number no longer in use. Re-numbered as BAB U/1[a].
BAB/U/013 Extracts in French from M. de Prony's tables.
BAB/W Draft notes and drawings relating to the first phase of work on the Analytical Engine from 1833-1848
BAB/W/001 A draft drawing labelled 'Sheet 3', showing card adding axis, mill adding axis, figure wheels, warning bar and lever and tens lifting slide.
BAB/W/005 Letters (mechanical notation) used to indicate the most important parts of Plan 28a.
BAB/W/008 Draft copy of Plan 28, dated 28 December 1842.
BAB/W/009 Analytical Engine Plan 28. Scale 1/6. Draft.
BAB/W/010 Counting apparatus. Arrangement of wheels.