Letter from Francis Mewburn, Darlington to Leonard Raisbeck
Letter from Francis Mewburn, Darlington to Leonard Raisbeck, Stockton
Printed fire insurance document
Order book 5
Passport
Effects of the Railroad on the Brute Creation
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.
Details of carriage.
Lifting apparatus by screw. Sheet 9.
Untitled. Shows plans and elevations of store wheels, mill, mill wheel cages, carriages and framing.
Carriage and racks in sections. Sheet 10.
Elevations and plans of printing apparatus. Experimental sketches for mill and store plans.
Digit counting apparatus spiral axis. Sheet 7.
Side and end elevation of feed motion with shade. Second revision.
Sections of framing and racks. Sheet 6.
Parts of plan, elevation and section of rising platforms for store. Superseded in following sheet.
Plan of part of the Analytical Engine. Quarto size.
Apparatus for registering the quotient adapted to Plan 28a.
Elevation arrangements for division. Sheet 20
Printing and card punching. Printing part of the Analytical Engine.
Side and end elevation of feed motions. Showing the bands in different colours.
