Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 865
Fig. 4.—Counter. … Fig. 5.—The Hollerith electric tabulating machine. of males and females, white and colored, single, married, widowed, etc., the binding posts ofthe switchboard corresponding with this data are connected with the binding posts of the TABULATING MACHINE. 835 dials on which these items are to be…
Mechanical engineering
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