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Hollerith 45 column horizontal electrical sorting machine, 1920-1930

Hollerith 45 column horizontal electrical sorting machine, 1920-1930

1920-1930

80-column hand-punch by British Tabulating Machine Co. Ltd

80-column hand-punch by British Tabulating Machine Co. Ltd

Punched Card Reproducer, Model 202

Punched Card Reproducer, Model 202

1955

Universal Plug Board Gauge

Universal Plug Board Gauge

1945

BTM 80 col Gang Punch Die and Stripper

BTM 80 col Gang Punch Die and Stripper

1937

BTM Card Sensing Unit (from Duplicator)

BTM Card Sensing Unit (from Duplicator)

1920

BTM Numerical Print Unit, c.1937

BTM Numerical Print Unit, c.1937

1937

BTM Geneva Mechanism used on 200 series Reproducer High Speed Card Punch

BTM Geneva Mechanism used on 200 series Reproducer High Speed Card Punch

1937

Hollerith key punch, model 20, 1909-1932

Hollerith key punch, model 20, 1909-1932

1909-1932

Hand operated Mercury cup tabulator

Hand operated Mercury cup tabulator

1908

Output print unit

Output print unit

1953

Data storage drum

Data storage drum

1960

Automatic Non-Printing Tabulator

Automatic Non-Printing Tabulator

1923

Selection of BTM Relays, on display panel

Selection of BTM Relays, on display panel

BTM Paper Feed Unit (used on 800 series Tabulators)

BTM Paper Feed Unit (used on 800 series Tabulators)

1946

Part of BTM Hollerith Plug-board Assembly

Part of BTM Hollerith Plug-board Assembly

1945

Half adder from Type 555 Hollerith Electronic Calculator

Half adder from Type 555 Hollerith Electronic Calculator

1957

Hand gang punch

Hand gang punch

1904

Card feed unit

Card feed unit

1953

Card Verifier

Card Verifier

circa 1950

BTM vertical sorter c. 1911 ICT Museum No.33

BTM vertical sorter, 1911.

1911

ICT Hollerith 80 col Balancing Tabulator, non printing, type 707

Non-printing balancing tabulator

BTM/Hollerith Auto Control ICT MN41 Non-printing Tabulator, c.1923

Automatic non-printing tabulator

1923

ICL/BTM Hollerith 80 col Reproducing Punch, type 203

Hollerith 80 col. replicating punch

BTM-Hollerith Wire Relay Gate, from 900 series Tabulator, c.1948

BTM-Hollerith Wire Relay Gate

1948

BTM-Hollerith Relay Gate, c.1945

BTM-Hollerith Relay Gate

1945

BTM Collator Selector Unit, c.1946

BTM Collator Selector Unit

1946

BTM/Hollerith Upper Counter Commutator, c.1939

BTM/Hollerith Upper Counter Commutator, c.1939

1939

BTM type 589 Output Print Unit, Magnet Box

BTM type 589 Output Print Unit, Magnet Box

Operating instructions, descriptive labels, and original 45 column cards for BTM/Hollerith Auto Control ICT MN41 Non-printing Tabulator, c.1923

Accessories for Automatic non-printing tabulator

1923

Part of BTM Hollerith Plug-board Assy, c.1945, in box

Part of BTM Hollerith Plug-board Assembly

1945

BTM vertical sorter c. 1911 ICT Museum No.33

BTM vertical sorter, 1911.

1911

ICT Hollerith 80 col Balancing Tabulator, non printing, type 707

Non-printing balancing tabulator

Covers for BTM Printer and Lister

Covers for BTM Printer and Lister

BTM Hollerith Plug-board Assy, c.1945

BTM Hollerith Plug-board Assy, c.1945

1945

ICL 80 col Sorter/Counter, type 302/4, c1950s, machine no.302/4/1876

80 Col Sorter/counter

circa 1950

BTM 800 series Alpha Wheel

BTM 800 series Alpha Wheel

BTM Rule for measuring number of cards in a pile

BTM Rule for measuring number of cards in a pile

BTM Hollerith 800 series Print Mechanism

BTM Hollerith 800 series Print Mechanism

BTM Model of Experimental Geneva Mechanism, c.1955

BTM Model of Experimental Geneva Mechanism

1955

BTM Universal Carriage Unit (used on 800 series Tabulators), c.1946

BTM Universal Carriage Unit (used on 800 series Tabulators)

1946

BTM type 589 Output Print Unit, Magnet Box

BTM type 589 Output Print Unit, Magnet Box

ICT 80 col Collator, type 365 machine, no.365/0/19282

80 Col. Collator

Cards and descriptive material for ICT Hollerith 80 col Balancing Tabulator, non printing, type 707

Non-printing balancing tabulator

Collection of early punched cards used by Hollerith and BTM, pre 1959

Collection of early punched cards used by Hollerith and BTM

ICL type 424 Card Interpreter, c.1959

Card interpreter

1959

Manual and reports for ICL type 424 Card Interpreter, c.1959

Card enterpreter

1959

ICL type 424 Card Interpreter, c.1959

Card interpreter

1959

Black metal base with wheels for the BTM vertical sorter.

Base of BTM vertical sorter, 1911.

1911

'Hollerith' card punch, for making train indicator board master cards, by the British Tabulating Machine Co. London, BR Midland region, 1950-1965

Hollerith card punch

1950-1965