US2262235A - Electric calculating machine - Google Patents
Electric calculating machine Download PDFInfo
- 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
Links
Images
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
Description
Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHI NE Filed July 21, 1938 92 Sheets-Sheet l Jnnentor Rolf Hofgaard His Gttomeg Nov. 11, 1941. R. HOFGAARD 2,262,235
ELECTRIC CALCULATING MACHINE Filed July 21, 193B 92 Sheets-Sheet 2 gllillllllll ii l-l-lllel l'I-I-I:
iii
Him
NOV- 11, 1941. R HQFGAARD 2,262,235
ELEC'IZRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 3 Rolf Hofgaard Hi5 ATTORNEY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 4 INVENTOR Rolf HoIgaard Hts ATTORN EY Filed July 21, 1938 92 Sheets-Sheet 5 INVENTOR Rolf Hofgaard 'ZM .M
His ATTORNEY Nov. 11, 1941. R. HOFGAARD 2,252,235
ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 6 FIG.1O
V1 and V2.
r x 5/ l n IlkWA/A A HAAAA/A MI//////// I A l INVENTOR Roll Hofgaard Hi ATTORNEY NOV- 11, 1941. R, HQFGAARD 2,262,235
ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 SheetsF-Sheet 7 FIG.14
FIG. 13 F B O O C J EP EHB G I I ED J I E E EP 0 C FF D . J o J 1m DD DD F F FIG. 15
INVENTOR Rolf Hnfgaard By M v His ATTORNEY Nov. 11; 1941. HOFGMRD 2,262,235
ELECTRIC CALCULATING MACHINE Filed July 21, 1958 92 Sheets-Sheet 8 7////////////////////////////////////////////A u x\\\\\\\\\\\\\\\\\\\-\\\\\\\\\\\\\\ .INVENTOR Rolf Holgaard Hi8 ATTORNEY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHI NE Filed July 21, 1938 92 Sheets-Sheet 9 LK'l To LKO.
INVENTOR Roll Hofgaard By His ATTORNEY Nov. 11, 1941.
50. FIG. 23
"EMA
F EH- EN I B B c R. HOFGAARD 2,262,235
ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet l0 3nventor B Rolf Hofgaard His Cittorneg NOV. 11, 1941. R HQFGAARD 2,262,235
ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 11 FIG.27
INVENTOR Rolf Hnfgaard His ATTORN EY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 12 I H {1/10 K G l HUI. I F h 0 ll 1 \J u 1 WWW mp m R w v M K F 2 K IIHIIIIIPI w M N M K K K x Y K K LKP INVENTOR Rolf Hol'gaard His ATTORNEY 92 Sheets-Sheet 15 INVENTOR Rolf Hnfgnard ga/vg/ His ATTORNEY Nov. 11, 1941. R. 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. R. 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
ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet l8 FIG.38
INVENTOR Rolf Hnfgnard His ATTORNEY Nov. 11, 1941. R, HQFGAARD 2,262,235
ELECTRIC CALCULAT ING MACHINE Filed July 21, 1938 92 Sheets-Sheet l9 FIG.42
IN VEN TO R Roll Hofgaard g g, M
His ATTORNEY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 2O INVENTOR Rolf Hofgaard Y His ATTORNEY
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB535891D GB535891A (en) | 1938-07-21 | ||
FR871955D FR871955A (en) | 1938-07-21 | ||
US220495A US2262235A (en) | 1938-07-21 | 1938-07-21 | Electric calculating machine |
DEN239D DE950335C (en) | 1938-07-21 | 1939-07-19 | Accounting machine |
CH224456D CH224456A (en) | 1938-07-21 | 1939-07-20 | Electric calculating machine. |
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 (en) |
CH (1) | CH224456A (en) |
DE (1) | DE950335C (en) |
FR (1) | FR871955A (en) |
GB (1) | GB535891A (en) |
Cited By (17)
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 (en) * | 1960-10-14 | 1967-02-16 | Olympia Werke Ag | Device for automatic switching of the ribbon on a typewriter which is electrically connected to a calculating machine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE458481C (en) * | 1923-11-07 | 1928-04-27 | Bernhard Weiner | Electric calculator and typewriter |
DE432436C (en) * | 1925-04-28 | 1926-08-11 | Astrawerke Akt Ges Fa | Typewriter |
DE605740C (en) * | 1930-11-09 | 1934-11-23 | Rheinische Metallw & Maschf | Automatic results printer |
-
0
- GB GB535891D patent/GB535891A/en active Active
- FR FR871955D patent/FR871955A/fr not_active Expired
-
1938
- 1938-07-21 US US220495A patent/US2262235A/en not_active Expired - Lifetime
-
1939
- 1939-07-19 DE DEN239D patent/DE950335C/en not_active Expired
- 1939-07-20 CH CH224456D patent/CH224456A/en unknown
Cited By (17)
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 (en) * | 1960-10-14 | 1967-02-16 | Olympia Werke Ag | Device for automatic switching of the ribbon on a typewriter which is electrically connected to a calculating machine |
Also Published As
Publication number | Publication date |
---|---|
GB535891A (en) | |
FR871955A (en) | 1942-05-27 |
DE950335C (en) | 1956-10-04 |
CH224456A (en) | 1942-11-30 |
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