GB991922A - Typing impression control for typewriters - Google Patents
Typing impression control for typewritersInfo
- Publication number
- GB991922A GB991922A GB24131/61A GB2413161A GB991922A GB 991922 A GB991922 A GB 991922A GB 24131/61 A GB24131/61 A GB 24131/61A GB 2413161 A GB2413161 A GB 2413161A GB 991922 A GB991922 A GB 991922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screws
- case
- strip
- adjustment
- cranks
- 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
- B41J7/92—Impact adjustment; Means to give uniformity of impression
- B41J7/94—Character-by-character adjustment
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
991,922. Typewriters. SPERRY RAND CORPORATION. July 4, 1961 [July 11, 1960], No. 24131/61. Heading B6F. Collective adjustment of impact.-The force of impact of all type levers 24 is determined by the length of time a cam 13 is in contact with a continuously rotating power roller 11, and by the effect of a camming roller 16 on a crank lever 17. This is controlled by cranks 15 carrying adjustable screws 65-66 which engage a movable limit strip 44 on a carrier bar 30, mounted for vertical movement on a lever 32 adjustable by a knob cam control 65-68 and linkage 70-72 thereby collectively varying the distance of movement of all the adjustable screws 65-56. Letter - by - letter adjustment.- Individual impact control for each letter is made by adjustment of screws 55, 56 in lugs 54 on base members 53 of the cranks 15. A nylon strip 57 with tight screw holes prevents the screws becoming loose. Which of the screws 55, 56 that engage the strip 44, is determined by the case-shift position. A crank 49, 47 is operated by a case-shift action (see below) and a bail rocker 46 is drawn upwardly from the position in Fig. 1 to that in Fig. 2 (not shown). This pulls the legs 36, 37 if a wire bail and slides the strip 44 from above one row of screws 55 to the other row 56. Case-shift action.-Operation of case shift key 97 operates linkage 96, 94, Fig. 3, and cranks 88, 89 pivot. A pawl 86 is released either by the nose 87 or 91 according to which case - shift position exists and the pawl engages a ratchet 81 keyed to a continuously rotating shaft 80. The pawl thereby rotates an eccentric disc 82 on which it is mounted a half-arevolution to raise or lower an arm 51 connected to the type-basket. It is this arm 51 which operates the crank 47 to alter the impression adjustment mechanism referred to above.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41854A US3077255A (en) | 1960-07-11 | 1960-07-11 | Typing impression control for typewriters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB991922A true GB991922A (en) | 1965-05-12 |
Family
ID=21918694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24131/61A Expired GB991922A (en) | 1960-07-11 | 1961-07-04 | Typing impression control for typewriters |
Country Status (6)
Country | Link |
---|---|
US (1) | US3077255A (en) |
BE (1) | BE605811A (en) |
CH (1) | CH391745A (en) |
DE (1) | DE1192662B (en) |
GB (1) | GB991922A (en) |
NL (3) | NL266950A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL125511C (en) * | 1963-05-02 | |||
DE1256231B (en) * | 1963-08-07 | 1967-12-14 | Olympia Werke Ag | Device for type lever gear to regulate the impression strength in power-driven typewriters |
DE1927227U (en) * | 1965-10-02 | 1965-11-18 | Olympia Werke Ag | COUPLING FOR POWER-DRIVEN WRITING OR SIMILAR MACHINERY. |
FR1543787A (en) * | 1966-12-28 | Ibm | Device controlling the print quality of a typewriter | |
DE2029332A1 (en) * | 1970-06-13 | 1971-12-16 | Olympia Werke Ag | Device for the individual adjustment of the stroke force of type levers in power-driven writing and similar office machines |
US3860103A (en) * | 1973-02-28 | 1975-01-14 | Litton Business Systems Inc | Segment shift arrangement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2344167A (en) * | 1941-12-26 | 1944-03-14 | Underwood Elliott Fisher Co | Typewriting machine |
BE496561A (en) * | 1949-06-25 | |||
US2796966A (en) * | 1953-09-08 | 1957-06-25 | Ibm | Type element driving mechanism |
DE1073006B (en) * | 1954-10-20 | 1960-01-14 | IBM Deutschland Internationale Büro-Maschinen Gesellschaft m.b.H., Sindelfingen (Württ.) | Type lever drive device for power operated typewriters |
US2818151A (en) * | 1954-11-17 | 1957-12-31 | Underwood Corp | Power operated typewriting and like machines |
NL104772C (en) * | 1957-05-29 |
-
0
- NL NL110331D patent/NL110331C/xx active
- NL NL301353D patent/NL301353A/xx unknown
- NL NL266950D patent/NL266950A/xx unknown
-
1960
- 1960-07-11 US US41854A patent/US3077255A/en not_active Expired - Lifetime
-
1961
- 1961-07-04 GB GB24131/61A patent/GB991922A/en not_active Expired
- 1961-07-06 BE BE605811A patent/BE605811A/en unknown
- 1961-07-07 CH CH796661A patent/CH391745A/en unknown
- 1961-07-08 DE DES74733A patent/DE1192662B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
BE605811A (en) | 1961-11-03 |
NL301353A (en) | |
NL266950A (en) | |
NL110331C (en) | |
CH391745A (en) | 1965-05-15 |
DE1192662B (en) | 1965-05-13 |
US3077255A (en) | 1963-02-12 |
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