1871 - 1791
The Babbage Papers
Plan of the calculating part of the Difference Engine
Adding axis and wheels without framing
Rising platform and selectors for variable columns in store one to each half of store. Quarter size.
Consecutive counting apparatus.
List of letters with the numbers of the drawings on which they occur.
A draft drawing labelled 'Sheet 3', showing card adding axis, mill adding axis, figure wheels, warning bar and lever and tens lifting slide.
Sketch of central wheel and principal framing. Plan, elevation.
Frame of adding wheels
Part 1. Plan and elevation of adding wheels, long pinions and intermediate pinions, plan, two elevations. Part 2. Lifting axes and fixed wires, plan, elevation.
Experimental planing machine
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