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Hollerith 45 column horizontal electrical sorting machine, 1920-1930

1920-1930

Hollerith key punch, model 20, 1909-1932

1909-1932

37-column Hollerith key punch

verification hole punch

1855

Hand key punching machine

1855

Punched card, for Hollerith Punch Card machine, pay slips for R M Harvey (Field Service Engineer for Hollerith Company) c. 1966.

Punch card for Hollerith punch card machine

1961-1971

Punched card, for Hollerith Punch Card machine, pay slips for R M Harvey (Field Service Engineer for Hollerith Company) c. 1966.

Punch card for Hollerith punch card machine

1961-1971

Punched card, for Hollerith Punch Card machine, pay slips for R M Harvey (Field Service Engineer for Hollerith Company) c. 1966.

Punch card for Hollerith punch card machine

1961-1971

Punched card, for Hollerith Punch Card machine, pay slips for R M Harvey (Field Service Engineer for Hollerith Company) c. 1966.

Punch card for a Hollerith punch card machine

1961-1971

Vertical Hollerith sorting machine with D.C. motor

Vertical Hollerith sorting machine with D.C. motor

Sorter 45 colmn round hole (mechanical) c.1920 (speed 400 cards/minute)

Sorter 45 colmn round hole

1920

Semi-automatic 3-counter tabulator, early example, c.1905, (no.0312)

Semi-automatic 3 counter tabulator

1905

5-Bank Hollerith printing and listing tabulating machine, no.3080, 45 column - this type normally square hole but this one is of the earlier round hole type

Hollerith printing and listing tabulating machine, c. 1925.

1920-1930

Hollerith alphabetical duplicating punch, 80 column, circa 1935

80 col. alphabetical duplicating punch

1935