GB1153521A - Typewriter Back-Spacing Mechanism - Google Patents
Typewriter Back-Spacing MechanismInfo
- Publication number
- GB1153521A GB1153521A GB22458/66A GB2245866A GB1153521A GB 1153521 A GB1153521 A GB 1153521A GB 22458/66 A GB22458/66 A GB 22458/66A GB 2245866 A GB2245866 A GB 2245866A GB 1153521 A GB1153521 A GB 1153521A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rocker
- pawls
- pawl
- coupling
- spacing
- 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
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/60—Auxiliary feed or adjustment devices
- B41J19/62—Auxiliary feed or adjustment devices for back spacing
-
- 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
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/34—Escapement-feed character-spacing mechanisms
- B41J19/58—Differential or variable-spacing arrangements
Landscapes
- Mechanical Operated Clutches (AREA)
- Transmission Devices (AREA)
- Character Spaces And Line Spaces In Printers (AREA)
Abstract
1,153,521. Typewriters. OLYMPIA WERKE A.G. 20 May, 1966 [21 May, 1965], No. 22458/66. Heading B6F. A typewriter having a proportional letterspacing escapement mechanism, which includes three pawls 4 1 , 4 2 , 4 3 , is provided with a backspacing operating lever 41 which through the intermediary of a rocker 36 actuates selectively arms 35<SP>111</SP> or lugs 35<SP>11</SP> on coupling levers 35, associated with the pawls, to drive one of the pawls in the carriage back-spacing direction and another pawl in the letter-spacing direction after initial disengagement of the pawls from an escapement rack 1 and to re-engage the other pawl with the escapement rack at the end of the back-spacing operation. Depression of a back-spacing key (not shown) displaces a push rod 41 away from its abutting surface 50<SP>1</SP>, so as to rock an arm 37 of a backspacing rocker 36 which lifts a bail 36<SP>1</SP> and allows pawl coupling levers 35 1 , 35 2 , 35 3 to pivot under the bias of springs 42 1 , 42 2 , 43 3 , about a pin 43 and to abut the pawls 4 1 , 4 2 , 4 3 . Displacement of the push rod 41 also causes displacement of the pin 43, mounted in a rocker 52, from its abutment surface 50<SP>11</SP> so that the pivoting coupling levers 35 1 and 35 2 engage lower steps 44 1 , 44 2 in their respective pawls 4 1 , 4 2 and the coupling lever 35 3 engages the upper step 45 in the pawl 4 3 in consequence of which lugs 35<SP>11</SP> 1 and 35<SP>11</SP> 2 or the associated coupling levers 35 1 , 35 2 are disposed in front of driving bail 36<SP>11</SP> of rocker 36 and the coupling lever 35 3 has its nose 35<SP>111</SP> 3 disposed in front of a driving bail 36<SP>111</SP> on the rocker 36. Continued anticlockwise rotation of the rocker 36 causes the coupling lever 35 1 to displace the pawl 4 1 by one tooth gap and effect back-spacing of the carriage with concomitant displacement of coupling lever 35 3 to the left. The latter pivots the pawl 4 3 whose slot edge 6<SP>1</SP> 3 abuts a pin 7, to disengage it from the rack tooth 3<SP>1</SP> and then to re-engage it with rack tooth 3<SP>11</SP> so as to hold the carriage in its back-spaced position. On release of the backspacing key the push rod 41 and rocker 36 are restored and the bail 36<SP>1</SP> disengages the coupling levers from the pawls.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO0010875 | 1965-05-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1153521A true GB1153521A (en) | 1969-05-29 |
Family
ID=7352141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22458/66A Expired GB1153521A (en) | 1965-05-21 | 1966-05-20 | Typewriter Back-Spacing Mechanism |
Country Status (4)
Country | Link |
---|---|
US (1) | US3455430A (en) |
CH (1) | CH445527A (en) |
DE (1) | DE1436698B2 (en) |
GB (1) | GB1153521A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3949855A (en) * | 1973-02-16 | 1976-04-13 | Litton Business Systems, Inc. | Typewriter carriage jam precluding and action jam release mechanisms |
US4029191A (en) * | 1975-05-01 | 1977-06-14 | Angelina M. Klem | Variable spacing printing apparatus |
EP2524944A1 (en) | 2011-05-19 | 2012-11-21 | Trading and Marketing Consultants Palmarole AG | Colouring composition for thermoplastic polymers and process of preparing and using same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE489932A (en) * | 1948-07-08 | |||
US2701045A (en) * | 1951-11-08 | 1955-02-01 | Teletype Corp | Backspacing mechanism |
BE527166A (en) * | 1953-03-12 | |||
US2905303A (en) * | 1955-12-29 | 1959-09-22 | Ibm | Escapement pawl control |
US2972401A (en) * | 1958-07-26 | 1961-02-21 | Olivetti & Co Spa | Variable spacing mechanism for typewriters |
US3288262A (en) * | 1962-11-08 | 1966-11-29 | Olivetti & Co Spa | Variable spacing mechanism for typewriters and like machines |
-
1965
- 1965-05-21 DE DE19651436698 patent/DE1436698B2/en active Pending
-
1966
- 1966-02-04 CH CH161366A patent/CH445527A/en unknown
- 1966-05-20 GB GB22458/66A patent/GB1153521A/en not_active Expired
- 1966-05-23 US US552178A patent/US3455430A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE1436698B2 (en) | 1970-01-15 |
DE1436698A1 (en) | 1970-01-15 |
CH445527A (en) | 1967-10-31 |
US3455430A (en) | 1969-07-15 |
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