Hollerith Senior Rolling Total Tabulator C.R.S. Mechanical Service Manual

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The Tabulator is a combination listing, adding, subtracting and printing machine. The Senior Rolling Total Tabulator consists of six registers (counters or accumulators), each holding eleven figures, into which numbers can be added or subtracted; three plug boards (or panels) and a print unit. There are a single card feed with output pocket, and a separate paper feed in the print unit.

This manual also covers the Junior Rolling Total Tabulator and the Hollerith type 805 Tabulator and is a fully comprehensive field engineering manual dated July 1951.

It includes parts lists, detail diagrams of various parts, engineering drawings and wiring diagrams and was kindly donated by Mrs Julia Haylett on behalf of her husband Albert John Haylett who worked at ICT for many years.

Reference Number : 8011 (7.51)

Date Published : July 1951

Manufacturer : The British Tabulating Machine Company Ltd

Platform : Hollerith

This exhibit has a reference ID of CH10731. Please quote this reference ID in any communication with the Centre for Computing History.

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