Calculator - Payen

Structure of mechanism
Function	This calculating machine is housed in a wooden case. It has a 9-figure input register, a 9-figure counter and a 16-figure totalizer. IT uses G.W. Leibniz’ (1646-1716) cylinder mechanism with unequal-length teeth, and the carriage shifts at each decimal place. The unit comprises a fixed part and a moving carriage. The fixed part contains the drive crank, the input cursors and the addition/subtraction lever. On the carriage there are the totalizer (top) and counter (smaller) windows, as well as the eraser buttons which are also used to advance the carriage.

Transfer function
Transfer function	identical direction

Application
Examples of application	This machine can perform the four operations; multiplication is by repeated additions and division is by repeated subtractions. Remark: This is the first calculating machine to have been marketed on a large scale.

Permanent links

DMG-Lib		https://www.dmg-lib.org/dmglib/handler?mcdsc=3174025
Europeana		http://www.europeana.eu/portal/record/2020801/dmglib_handler_mcdsc_3174025.html