US2262235A - Electric calculating machine - Google Patents

Electric calculating machine Download PDF

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Publication number
US2262235A
US2262235A US220495A US22049538A US2262235A US 2262235 A US2262235 A US 2262235A US 220495 A US220495 A US 220495A US 22049538 A US22049538 A US 22049538A US 2262235 A US2262235 A US 2262235A
Authority
US
United States
Prior art keywords
hofgaard
calculating machine
sheet
sheets
filed july
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US220495A
Other languages
English (en)
Inventor
Hofgaard Rolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR871955D priority Critical patent/FR871955A/fr
Priority to GB535891D priority patent/GB535891A/en
Application filed by NCR Corp filed Critical NCR Corp
Priority to US220495A priority patent/US2262235A/en
Priority to DEN239D priority patent/DE950335C/de
Priority to CH224456D priority patent/CH224456A/fr
Application granted granted Critical
Publication of US2262235A publication Critical patent/US2262235A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/40—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using contact-making devices, e.g. electromagnetic relay
    • G06F7/44—Multiplying; Dividing
    • G06F7/446—Multiplying; Dividing by partial product forming (with electric multiplication table)

Definitions

  • HOFGAARD ELECTRIC CALCULATING MACHI NE Filed July 21, 1938 Nov. 11, 1941.
  • R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet l4 o vm INVENTOR HIS ATTO RN EY Nov. 11, 1941.
  • R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 15 INVENTOR Rolf Hofgaard y His ATTORNEY Nov. 11, 1941.
  • HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 16 mm UE INVENTOR Rolf Hofgaard His ATTORNEY 1941- R.
  • HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1958 92 Sheets-Sheet 1'7 INVENTOR B, Rolf Hol'gaard His ATTORNEY Nov. 11, 19410 HOFGAARD 2,262,235
  • FIG.42 ELECTRIC CALCULAT ING MACHINE Filed July 21, 1938 92 Sheets-Sheet l9
US220495A 1938-07-21 1938-07-21 Electric calculating machine Expired - Lifetime US2262235A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR871955D FR871955A (fr) 1938-07-21
GB535891D GB535891A (fr) 1938-07-21
US220495A US2262235A (en) 1938-07-21 1938-07-21 Electric calculating machine
DEN239D DE950335C (de) 1938-07-21 1939-07-19 Buchhaltungsmaschine
CH224456D CH224456A (fr) 1938-07-21 1939-07-20 Machine à calculer électrique.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US220495A US2262235A (en) 1938-07-21 1938-07-21 Electric calculating machine

Publications (1)

Publication Number Publication Date
US2262235A true US2262235A (en) 1941-11-11

Family

ID=22823766

Family Applications (1)

Application Number Title Priority Date Filing Date
US220495A Expired - Lifetime US2262235A (en) 1938-07-21 1938-07-21 Electric calculating machine

Country Status (5)

Country Link
US (1) US2262235A (fr)
CH (1) CH224456A (fr)
DE (1) DE950335C (fr)
FR (1) FR871955A (fr)
GB (1) GB535891A (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420167A (en) * 1943-03-31 1947-05-06 Ibm Relay type cross-totalizing device for record card data
US2434681A (en) * 1943-02-13 1948-01-20 Bell Telephone Labor Inc Remotely controlled electrical calculator
US2467419A (en) * 1943-10-16 1949-04-19 Marchant Calculating Machine Automatic decimal and shift control mechanism
US2536951A (en) * 1945-12-21 1951-01-02 Ibm Record controlled multiplying machine
US2538636A (en) * 1947-12-31 1951-01-16 Bell Telephone Labor Inc Digital computer
US2551093A (en) * 1947-09-24 1951-05-01 Ibm Combined typewriter and computing machine with accumulators of the relay type
US2588923A (en) * 1946-01-16 1952-03-11 Int Standard Electric Corp Calculator
US2668661A (en) * 1944-11-23 1954-02-09 Bell Telephone Labor Inc Complex computer
US2717733A (en) * 1949-05-13 1955-09-13 Ibm Typewriter controlled calculator
US2728521A (en) * 1952-04-11 1955-12-27 Friden Calculating Machine Co Apparatus for typing symbols from a register
US2855147A (en) * 1954-11-12 1958-10-07 Phillips Petroleum Co Polynomial multiplier
US2892588A (en) * 1952-01-31 1959-06-30 Ibm Multiplying arrangements for digital computing machines
US2919003A (en) * 1955-11-25 1959-12-29 Ibm Consecutive serial numbering device
US2948464A (en) * 1954-06-11 1960-08-09 Hobart Mfg Co Computing mechanism
US2977048A (en) * 1946-12-17 1961-03-28 Bell Telephone Labor Inc Automatic calculator
US3138702A (en) * 1959-10-02 1964-06-23 Tally Register Corp Automatic sequence controlled computer
DE1234420B (de) * 1960-10-14 1967-02-16 Olympia Werke Ag Vorrichtung zum selbsttaetigen Umschalten des Farbbandes an einer Schreibmaschine, die mit einer Rechenmaschine elektrisch verbunden ist

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE458481C (de) * 1923-11-07 1928-04-27 Bernhard Weiner Elektrische Rechen- und Schreibmaschine
DE432436C (de) * 1925-04-28 1926-08-11 Astrawerke Akt Ges Fa Schreibrechenmaschine
DE605740C (de) * 1930-11-09 1934-11-23 Rheinische Metallw & Maschf Selbsttaetige Resultatdruckvorrichtung

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434681A (en) * 1943-02-13 1948-01-20 Bell Telephone Labor Inc Remotely controlled electrical calculator
US2420167A (en) * 1943-03-31 1947-05-06 Ibm Relay type cross-totalizing device for record card data
US2467419A (en) * 1943-10-16 1949-04-19 Marchant Calculating Machine Automatic decimal and shift control mechanism
US2668661A (en) * 1944-11-23 1954-02-09 Bell Telephone Labor Inc Complex computer
US2536951A (en) * 1945-12-21 1951-01-02 Ibm Record controlled multiplying machine
US2588923A (en) * 1946-01-16 1952-03-11 Int Standard Electric Corp Calculator
US2977048A (en) * 1946-12-17 1961-03-28 Bell Telephone Labor Inc Automatic calculator
US2551093A (en) * 1947-09-24 1951-05-01 Ibm Combined typewriter and computing machine with accumulators of the relay type
US2538636A (en) * 1947-12-31 1951-01-16 Bell Telephone Labor Inc Digital computer
US2717733A (en) * 1949-05-13 1955-09-13 Ibm Typewriter controlled calculator
US2892588A (en) * 1952-01-31 1959-06-30 Ibm Multiplying arrangements for digital computing machines
US2728521A (en) * 1952-04-11 1955-12-27 Friden Calculating Machine Co Apparatus for typing symbols from a register
US2948464A (en) * 1954-06-11 1960-08-09 Hobart Mfg Co Computing mechanism
US2855147A (en) * 1954-11-12 1958-10-07 Phillips Petroleum Co Polynomial multiplier
US2919003A (en) * 1955-11-25 1959-12-29 Ibm Consecutive serial numbering device
US3138702A (en) * 1959-10-02 1964-06-23 Tally Register Corp Automatic sequence controlled computer
DE1234420B (de) * 1960-10-14 1967-02-16 Olympia Werke Ag Vorrichtung zum selbsttaetigen Umschalten des Farbbandes an einer Schreibmaschine, die mit einer Rechenmaschine elektrisch verbunden ist

Also Published As

Publication number Publication date
DE950335C (de) 1956-10-04
FR871955A (fr) 1942-05-27
GB535891A (fr)
CH224456A (fr) 1942-11-30

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