GB768468A - Improvements in typewriters - Google Patents
Improvements in typewritersInfo
- Publication number
- GB768468A GB768468A GB191/55A GB19155A GB768468A GB 768468 A GB768468 A GB 768468A GB 191/55 A GB191/55 A GB 191/55A GB 19155 A GB19155 A GB 19155A GB 768468 A GB768468 A GB 768468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- links
- link
- advanced
- path
- group
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J7/00—Type-selecting or type-actuating mechanisms
- B41J7/02—Type-lever actuating mechanisms
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
- Transmission Devices (AREA)
- Discharge By Other Means (AREA)
Abstract
768,468. Typewriters. INTERNATIONAL BUSINESS MACHINES CORPORATION. Jan. 4, 1955 [Jan. 4, 1954], No. 191/55. Class 100(4) A typewriter has an arcuate group of pivoted type bars 10, a plurality of bars actuating links 20, each operatively interconnected with a type bar, one or more cam surfaces 35 carried on a drum 30 and continuously movable in a path adjacent one end of each link, and one or more actuators for selectively moving the links to bring their ends into the path of the cams which initiate. movement of the selected link and bar to force the bar into contact with the copy. In the construction shown in Figs. 1 and 4 the cams 35 are mounted on the inner surface of the rotating drum 30 and links 20 are normally held out of the path of the cams by engagement of a spring-pressed ball 58 with the pointed end of the link. When a key 40 is depressed it acts through pawl 48, ratchet 49, cable 45, and lever 51 to pull the end of the corresponding link 20 radially outwardly of the drum, and with the ball 58 then acting on the bevelled nose 59 of the link the latter is moved into the path of cam 35 to actuate the type bar 10 against springs 22, 29. The force of spring 29, and hence the strength of the impression on the platen is varied commonly by plate 27 and individually by nut 28. The parts are returned by springs 43, 22, 29. The links may be deflected and advanced by individual electromagnetic means, 'but in the construction shown in Figs. 6 and 7 links 20 are moved into the path of the cams by fingers 96 which normally register with the space between a pair of links, are deflected, to the right or to the left to register with the desired link by electromagnetic means, and advanced axially to move the links by further electromagnetic means. Each finger 96 passes through an aperture in one of a series of tabs 100 on four sector-shaped formes 102 or 104, rotated clockwise or anticlockwise about bars 106, by a common armature 116, according to which solenoid 108 is energized, so that the group of fingers connected with the sector register with one or other of the links associated with each 'finger. The armature 92 of each motive means 90 is connected to a group of four fingers 96, is advanced by energization of solenoid 89, and returned by spring 94, but the arrangement is such that although a group of fingers is deflected by the movement of one sector 102 or 104, and a group advanced by a means 90, only one finger is both deflected and advanced so that one type bar only is actuated. Individual or common switches to complete circuits for energizing solenoids 89, 108 may be closed by actuation of a type key. The invention may be applied to a card operated typewriter.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US402015A US2812048A (en) | 1954-01-04 | 1954-01-04 | Rotating drum typewriting machine |
Publications (1)
Publication Number | Publication Date |
---|---|
GB768468A true GB768468A (en) | 1957-02-20 |
Family
ID=23590194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB191/55A Expired GB768468A (en) | 1954-01-04 | 1955-01-04 | Improvements in typewriters |
Country Status (5)
Country | Link |
---|---|
US (1) | US2812048A (en) |
DE (1) | DE1074598B (en) |
FR (1) | FR1120526A (en) |
GB (1) | GB768468A (en) |
NL (1) | NL89962C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003503659A (en) * | 1999-07-01 | 2003-01-28 | プラステイツク・オムニアン・バレオ・アントウリオール | Device for assembling two members with gaps related to position |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3373857A (en) * | 1966-03-29 | 1968-03-19 | Litton Business Systems Inc | Mechanism for power operating type actions both to and from the printing point |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US869526A (en) * | 1906-10-05 | 1907-10-29 | Williams Typewriter Company | Type-writer mechanism. |
US1202878A (en) * | 1914-09-28 | 1916-10-31 | William H Waller | Power-driven type-writer. |
US1199824A (en) * | 1915-11-06 | 1916-10-03 | Mercedes Bureau Maschinen Ges M B H | Type-writing machine. |
US1395600A (en) * | 1920-01-31 | 1921-11-01 | A corpora | |
US1737439A (en) * | 1925-06-12 | 1929-11-26 | Underwood Elliott Fisher Co | Typewriting machine |
US2254764A (en) * | 1938-12-03 | 1941-09-02 | Underwood Elliott Fisher Co | Typewriting machine |
US2383256A (en) * | 1943-07-03 | 1945-08-21 | Royal Typewriter Co Inc | Typewriting machine |
US2407195A (en) * | 1944-02-17 | 1946-09-03 | Ibm | Typewriting machine |
DE921627C (en) * | 1948-02-03 | 1954-12-23 | Royal Typewriter Co Inc | Power drive device for typewriters u. like |
-
0
- NL NL89962D patent/NL89962C/xx active
- DE DENDAT1074598D patent/DE1074598B/en active Pending
-
1954
- 1954-01-04 US US402015A patent/US2812048A/en not_active Expired - Lifetime
- 1954-12-28 FR FR1120526D patent/FR1120526A/en not_active Expired
-
1955
- 1955-01-04 GB GB191/55A patent/GB768468A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003503659A (en) * | 1999-07-01 | 2003-01-28 | プラステイツク・オムニアン・バレオ・アントウリオール | Device for assembling two members with gaps related to position |
Also Published As
Publication number | Publication date |
---|---|
DE1074598B (en) | 1960-02-04 |
FR1120526A (en) | 1956-07-09 |
US2812048A (en) | 1957-11-05 |
NL89962C (en) |
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